Technics MT5634SMI-34, MT5634SMI-92 User Manual

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Embedded Data/Fax Global Modem

MT5634SMI-34 MT5634SMI-92

Serial Build

Parallel Build

Medical Device Build

Industrial Temperature Build

Developer’s Guide

SocketModem Developer’s Guide Serial: MT5634SMI-34, MT5634SMI-92 Parallel: MT5634SMI-P-92 Medical Device: MT5634SMI-HV-92, MT5634SMI-P-HV-92 Industrial Temperature: MT5634SMI-ITP-92, MT5634SMI-P-ITP-92

PN S000263B, Version B

Multi-Tech Systems, Inc. makes no representations or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose. Furthermore, Multi-Tech Systems, Inc. reserves the right to revise this publication and to make changes from time to time in the content hereof without obligation of Multi-Tech Systems, Inc. to notify any person or organization of such revisions or changes.

Revisions

Revision Level Date Description

A 08/09/02 First release. Includes global configuration and V.92 protocol. B 06/19/03 Add V.34 documentation.

Trademarks

Trademarks of Multi-Tech Systems, Inc. are SocketModem and the Multi-Tech logo. Microsoft and Microsoft Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.

World Headquarters

Multi-Tech Systems, Inc. 2205 Woodale Drive Mounds View, Minnesota 55112 Phone: 763-785-3500 or 800-328-9717 Fax: 763-785-9874

Technical Support Country By Email By Phone

France: support@multitech.fr (33) 1-64 61 09 81 India: support@multitechindia.com 91 (124) 6340778 U.K.: support@multitech.co.uk (44) 118 959 7774 U.S. and Canada: oemsales@multitech.com (800) 972-2439 Rest of the World: oemsales@multitech.com (763) 717-5863

Internet Address: http://www.multitech.com

Table of Contents

Chapter 1 – Product Description and Specifications ..............................................................................6

Introduction ................................................................................................................................................6

Product Description.................................................................................................................................... 6

Features Matrix ..........................................................................................................................................7

Technical Specifications and Features ......................................................................................................8

Chapter 2 – Mechanical Specifications...................................................................................................10

Physical Dimensions – All Models ...........................................................................................................10

Pin Configurations.................................................................................................................................... 11

Chapter 3 – Electrical Characteristics ....................................................................................................14

Introduction ..............................................................................................................................................14

I/O Electrical Characteristics.................................................................................................................... 14

5V Serial – Standard (SMI) and Medical Device (SMI-HV) Build Options ..........................................14

3.3V Serial – Industrial Temperature (SMI-ITP) Build Option .............................................................14

5V Parallel – Standard (SMI) and Medical Device (SMI-HV) Build Options .......................................14

3.3V Parallel – Standard (SMI) and Industrial Temperature (SMI-ITP) Build Options........................15

Timing Requirements............................................................................................................................... 15

Timing Requirements for Parallel Write .............................................................................................. 15

Timing Requirements for Parallel Read ..............................................................................................15

Handling Precautions............................................................................................................................... 15

Chapter 4 – SocketModem Parallel Interface – A Programmer’s Description ....................................16

SocketModem Parallel Interface Internal Registers ................................................................................16

SocketModem MIMIC (MMM) Operation .................................................................................................16

Time Out Interrupts ..................................................................................................................................18

Register Functional Descriptions .............................................................................................................18

Internal Registers..................................................................................................................................... 18

SCR Scratch ............................................................................................................................................22

DLL Divisor Latch (LSByte)...................................................................................................................... 22

DLM Divisor Latch (MSByte)....................................................................................................................22

Chapter 5 – AT Commands, S-Registers, and Result Codes ...............................................................23

Introduction ..............................................................................................................................................23

AT Command Summary .......................................................................................................................... 23

AT Commands .........................................................................................................................................25

Escape AT Commands ............................................................................................................................34

V.92 Commands ......................................................................................................................................35

S-Registers ..............................................................................................................................................40

Result Codes ...........................................................................................................................................42

Chapter 6 - Voice Commands ..................................................................................................................44

Introduction ..............................................................................................................................................44

Voice S-Register Summary......................................................................................................................45

Voice Commands..................................................................................................................................... 45

Commands That Change for Voice Mode Support.................................................................................. 45

Voice +V Commands Summary............................................................................................................... 46

Voice +V Commands Detail.....................................................................................................................46

Interface Configuration Commands......................................................................................................... 57

Flow Control............................................................................................................................................. 58

Voice Mode Result Codes .......................................................................................................................58

Unsolicited Voice Mode Result Codes..................................................................................................... 59

Valid Complex Event Report Tags ......................................................................................................59

Voice Mode Shielded Codes....................................................................................................................60

Sample Sessions .....................................................................................................................................62

SocketModem Global MT5634SMI Developer’s Guide 3

Sample Rate Selection and Suggested Compression Method ...........................................................62

Answer Phone, Play Greeting Message, and Record Message Example.......................................... 63

DTE/DCE Interface Rates........................................................................................................................ 65

Related Manuals ......................................................................................................................................65

Additional Information ..............................................................................................................................65

Chapter 7 – Fax Commands.................................................................................................................... 66

Chapter 8 - Remote Configuration and Country Code Configuration .................................................67

Remote Configuration ..............................................................................................................................67

Basic Procedure ..................................................................................................................................67

Setup ...................................................................................................................................................67

Country Code Configuration ....................................................................................................................68

Using the Global Wizard Utility............................................................................................................ 68

Using AT Commands .......................................................................................................................... 68

Chapter 9 – Firmware Upgrade Procedure............................................................................................. 69

Introduction ..............................................................................................................................................69

Flash Upgrade Firmware..................................................................................................................... 69

Multi-Tech’s Flash Programming Protocol ..........................................................................................69

Upgrade Overview ...................................................................................................................................69

Upgrade Steps .........................................................................................................................................69

Step 1: Identify the Modem Firmware .................................................................................................69

Step 2: Identify the Current Version of the Firmware.......................................................................... 70

Step 3: Download the Upgrade File ....................................................................................................70

Step 4: Install the Flash Wizard...........................................................................................................70

Step 5: Extract the Firmware Upgrade (.Hex) Files ............................................................................70

Step 6: Document Your Stored Parameters........................................................................................70

Step 7: Upgrade the Modem’s Firmware ............................................................................................71

Using the Flash Wizard .......................................................................................................................71

Step 8: Restore Your Parameters .......................................................................................................71

Multi-Tech Systems, Inc. Flash Programming Protocol........................................................................... 72

1. Programming the Modem................................................................................................................72

2. Other Supported Boot Code Commands ........................................................................................73

3. Other Programming Concerns....................................................................................................73

Intel Hex Format.................................................................................................................................. 74

Appendix A – Mechanical Details ............................................................................................................76

Serial Test/Demo Board Components .....................................................................................................76

5V / 3.3V Jumper – JP1 ...........................................................................................................................77

Serial Test/Demo Board Block Diagram ..................................................................................................77

Parallel Test/Demo Board Components .................................................................................................78

Parallel Test/Demo Board Block Diagram ...............................................................................................79

Appendix B - Product Approvals, Design Considerations, and Regulatory Information.................. 80

Safety and EMC Approvals...................................................................................................................... 80

Telecom Approvals ..................................................................................................................................80

Regulatory Design Considerations ..........................................................................................................81

Hardware Considerations ........................................................................................................................81

Safety....................................................................................................................................................... 82

5V Tolerant Inputs for 3.3V Modules .......................................................................................................83

FCC Part 15 Regulation........................................................................................................................... 84

FCC Part 68 Telecom ..............................................................................................................................85

Telecom Labeling Requirements .............................................................................................................85

From FCC PART 68 Subpart D – Conditions for Registration.................................................................86

Fax Branding Statement ..........................................................................................................................87

Canadian Limitations Notice ....................................................................................................................87

Industry Canada CS-03 ........................................................................................................................... 88

International Modem Restrictions ............................................................................................................88

SocketModem Global MT5634SMI Developer’s Guide 4

EMC, Safety, and R&TTE Directive Compliance.....................................................................................88

New Zealand Telecom Warning Notice ...................................................................................................89

South African Notice ................................................................................................................................ 89

Appendix C – Country Configuration and Result Codes ......................................................................90

Index........................................................................................................................................................... 95

SocketModem Global MT5634SMI Developer’s Guide 5

Chapter 1 – Product Description and Specifications

Chapter 1 – Product Description and

Specifications

Introduction

Multi-Tech’s SocketModem creates communication-ready devices by integrating data/fax/voice functionality into a single product design. The SocketModem is a space-efficient (1" × 2.5"), embedded modem that provides V.92/56K communication. The complete, ready-to-integrate modem dramatically reduces development time and costs for system designers. The SocketModem complies with global Telecom requirements, can be shipped worldwide, and is globally configurable.

This guide provides the hardware, software, testing and troubleshooting information needed to effectively integrate the SocketModem into your equipment. It also provides:

· commands a developer can use to configure and control a data/fax/voice modem and

· result codes the modem issues in response to the commands.

Fax Commands Documents

Two separate fax command documents along with an informational fax document are available on CD and from Multi-Tech. They are also available on the Multi-Tech Web site, or you can contact OEM Sales at:

oemsales@multitech.com (800) 972-2439.

Product Description

The MT5634SMI SocketModem is used for integrating data and fax communications:

· It is a single-port modem, which integrates the controller, DSP, and DAA in a 1" x 2.5" form factor and communicates to a host controller via an asynchronous serial interface

· It is available with an 8-bit parallel interface.

· It supports the ITU-T V.92 protocol.

Two SocketModem kits are available, one for serial and the other for parallel. The serial kit allows you to plug in the SocketModem and use it as a serial modem for testing, programming, and evaluation. The parallel kit turns the parallel module into an ISA modem. Each kit includes one development board with an RS-232 DB-25 connector, wall power adapter, RJ-11 jack, and RS-232 cable.

SocketModem Global MT5634SMI Developer’s Guide 6

Chapter 1 – Product Description and Specifications

Features Matrix

Parallel Interface (16C550)

v.92/56K Max. Data Speed

Model Build Option

MT5634SMI MT5634SMI-92 X X X X X X X X X

MT5634SMI-P-92 X X X X X X X X X

MT5634SMI-HV-92 X X X X X X X X

MT5634SMI-P-HV-92 X X X X X X X X

MT5634SMI-IT-92 X X X X X X X X X

MT5634SMI-P-IT-92 X X X X X X X X X

MT5634SMI-34 X X X

Serial Interface

V.34/33.6K Max. Data Speed

V.17 Fax Class 1, 1.0, and

Class 2

Fax Class 2.0 and 2.1

V.42 Error Correction

V.42bis Data Compression

DTMF Detection

Distinctive Ring

Voice Record and Playback

Note: SMI-92 indicates a serial build.

SMI-P-92 indicates a parallel V.92 build. SMI-HV-92 indicates a serial V.92 high voltage medical device build. SMI-P-HV-92 indicates a parallel V.92 high voltage medical build. SMI-IT-92 indicates a serial V.92 industrial temperature build. SMI-P-IT-92 indicates a parallel V.92 industrial temperature build. SMI-34 indicates a serial V.34 build.

SocketModem Global MT5634SMI Developer’s Guide 7

Chapter 1 – Product Description and Specifications

Technical Specifications and Features

The SocketModem meets the following specifications:

Client-to-Server Data Rates

Client-to-Client Data Rates

Fax Data Rates

Data Format

Data Compatibility

Fax Compatibility

Voice Compatibility

Error Correction

Data Compression

Serial Speeds

Modes of Operation

Supports V.92 and V.90 data rates

33,600; 31,200; 28,800; 26,400; 24,000; 21,600; 19,200; 16,800; 14,400; 12,000; 9600; 7200; 4800; 2400; 1200; 0-300 bps

Serial, binary, asynchronous (available with parallel interface)

V.92, V.34 enhanced, V.34, V.32bis, V.32, V.22bis, V.22; Bell 212A and 103/113, V.21 & V.23

ITU-T “Super” Group 3; Class 1.0, 2.0, 2.1; Group 3, Class 1 and 2, T.4, T.30, V.21, V.27ter, V.29, V.34, V.17, and TIA/EIA TR29.2

IS-101 AT+V commands (no CODEC for speakers/microphone interface)

V.42 (LAP-M or MNP 3–4)

ITU-T V.44 (6:1 throughput); V.42bis (4:1 throughput); MNP 5 (2:1 throughput)

Serial port data rates adjustable to 300, 1200, 2400, 4800, 9600, 19,200, 38,400, 57,600, 115,200, and 230,400 bps

Fax online modes; full duplex over dial-up lines; data mode, command mode, and online command mode, V.54 test mode

Flow Control

Command Buffer

Transmit Level

Frequency Stability

Receiver Sensitivity

AGC Dynamic Range

Interface

Diagnostics

Weight

Dimensions

DAA Isolation

XON/XOFF (software), RTS/CTS (hardware)

60 characters

–11 dBm (varies by country setting)

±0.01%

–43 dBm under worst-case conditions

43 dB

TTL serial or 8-bit parallel interface

Local analog loop, local digital loop, remote digital loop

0.02 Kg. (0.04 lb.)

1.045" × 2.541" × 0.680" (2.7 x 6.5 x 1.8 cm)

MT5634SMI-92

1500 Vac

MT5634SMI-HV-92 (High Voltage {5V Medical Device} Build Option)

3000 Vac

SocketModem Global MT5634SMI Developer’s Guide 8

Chapter 1 – Product Description and Specifications

Power Consumption

Operating Voltage

Operational Temperature Range

Storage Temperature

Cleaning

Standard

Typical: 245 mA (1.25 W @ 5V DC) Standby or Sleep Mode: 148mA Maximum: 420 mA (2.1 W @ 5.25V DC)

MT5634SMI-IT-92 (Industrial Temperature {3.3V} Build Option)

Typical: 180 mA (0.59 W @ 3.3V DC) Standby or Sleep Mode: 88mA Maximum: 290 mA (1.04 W @ 3.6V DC)

Standard

5V DC +/- 5% Absolute Maximum Supply Voltage: 6V DC

MT5634SMI-IT-92 (Industrial Temperature {3.3V} Build Option)

3.3V DC, 180mA Absolute Maximum Supply Voltage: 3.6V DC

Standard

0–+70° C ambient under closed conditions; humidity range 20–90% (non-condensing)

MT5634SMI-IT-92 (Industrial Temperature {3.3V} Build Option)

-40–+85° C ambient under closed conditions; humidity range 20–90% (non-condensing)

-50–+100° C

No cleaning/washing due to the manufacturing process used to produce this product

Intelligent Features

fully AT command compatible leased line operation sleep mode autodial, redial pulse or tone dial dial pauses auto answer adaptive line probing automatic symbol and carrier frequency during start-up, retrain, and rate renegotiations DTMF detection call status display, auto-parity and data rate selections keyboard-controlled modem options on-screen displays for modem option parameters remote configuration DTR dialing phone number storage flash memory for firmware updates NVRAM storage for user-defined parameters

SocketModem Global MT5634SMI Developer’s Guide 9

Chapter 2 – Mechanical Specifications

Physical Dimensions – All Models

Figure 2–1. Maximum Component Height

CAUTION: If any component(s) is placed under the SocketModem or if any component(s) should extend to the

point where part of it is under the SocketModem, the component(s) must NOT exceed .060 inches in height.

SocketModem Global MT5634SMI Developer’s Guide 10

Chapter 2 – Mechanical Specifications

Pin Configurations

The MT5634SMI SocketModem uses a 20-pin interface to provide an on-board DAA with tip and ring connections, audio circuit for call-progress monitoring, LED driver for call status annunciation, and serial interface.

Figure 2–2. Serial SocketModems Pins

Pin Descriptions for Serial SocketModem Devices

Pin # Signal Name I/O Type Description

26 DGND 33 –RTS I 34 –RXD O

35 –TXD I

36 –RI O

37 –DSR O

38 –CTS O

Digital Ground Request to Send. RTS signal is used for hardware flow control. Received Data. The modem uses the RXD line to send data received from

the telephone line to the DTE and to send modem responses to the DTE. During command mode, –RXD data presents the modem responses to the DTE. Modem responses take priority over incoming data when the two signals are in competition for –RXD. When no data is transmitted, the signal is held in mark condition. Transmitted Data. The DTE uses the –TXD line to send data to the modem for transmission over the telephone line or to transmit commands to the modem. The DTE should hold this circuit in the mark state when no data is being transmitted or during intervals between characters. Ring Indicate. –RI output ON (low) indicates the presence of an ON segment of a ring signal on the telephone line. The modem will no go off-hook when –RI is active; the modem waits for –RI to go inactive before going off-hook. Data Set Ready. –DSR indicates modem status to the DTE. –DSR OFF (high) indicates that the DTE is to disregard all signals appearing on the interchange circuits except Ring Indicator (–RI). It reflects the status of the local data set and does not indicate an actual link with any remote data equipment. Clear To Send. –CTS is controlled by the modem to indicate whether or not the modem is ready to transmit data. –CTS ON indicates to the DTE that signals presented on TXD will be transmitted to the telephone line. –CTS OFF

SocketModem Global MT5634SMI Developer’s Guide 11

Chapter 2 – Mechanical Specifications

indicates to the DTE that it should not transfer data across the interface on TXD.

39 –DCD O

40 –DTR I

41 DGND GND 61 VCC PWR 63 AGND GND

64 SPKR

LED driver outputs are open-drain inverter-driven (74HCT05) lines with 1.5K ohms pull-up resistors. Max output current 25 mA.

1 Tip I/O 2 Ring I/O 24 –RESET I

29 DCDIND O 30 RXIND O 31 DTRIND O 32 TXDIND O

Data Carrier Detect. –DCD output is ON (low) when a carrier is detected on the telephone line or OFF (high) when carrier is not detected. Data Terminal Ready (Active Low). The –DTR input is turned ON (low) by the DTE when the DTE is ready to transmit or receive data. –DTR ON prepares the modem to be connected to the telephone line, and, once connected, maintains the connection. –DTR OFF places the modem in the disconnect state.

+5V or 3.3V Supply (depends upon model). Analog Ground. Analog ground is tied common with DGND on the

SocketModem. To minimize potential ground noise issues, connect audio circuit return to AGND. Speaker Output. SPKR is a single ended-output. SPKR is tied directly to the CODEC.

Tip Signal from Telco. Ring Signal from Telco. Modem Reset (with weak pull-up). The active low –RESET input resets the

SocketModem logic and returns the AT command set to the original factory defa values or to "stored values" in NVRAM. –RESET is tied to VCC through a 400m time constant circuit for "Power-on-Reset" functionality. The modem is ready to accept commands within 6.5 seconds of power-on or reset. Reset must be asse for 300 ns.

Active High DCD status. Active High RDX status Active High DTR status Active High TXD status

SocketModem Global MT5634SMI Developer’s Guide 12

Chapter 2 – Mechanical Specifications

The MT5634SMI-P (Parallel) SocketModem uses a 22-pin interface to provide an on-board DAA with tip and ring connections, audio circuit for call-progress monitoring, and parallel interface.

Figure 2–3. Parallel SocketModem Pins

Pin Descriptions for a Parallel SocketModem Device

Pin #

1 Tip I/O 2 Ring I/O 24 –RESET I

26 DGND GND 25, 31,34A0, A1,A2I

30 INT O

32 –WR I

33 –RD I

40 –DS I 61 VCC PWR 63 AGND GND

64 SPKR O

Signal Name

I/O Description

Tip Signal from Telco Ring Signal from Telco Modem Reset (with weak pull-up). The active low –RESET input resets the

SocketModem logic and returns the AT command set to the original factory default values or to "stored values" in NVRAM. The modem is ready to accept commands within 6.5 seconds of power-on or reset. Reset must be asserted for a minimum of 300 ns.

Digital Ground Host Bus Address Lines 0 and 2. During a host read or write operation, A0

through A2 select an internal 16C450 or 16C550-compatible register. The state of the divisor latch access bit (DLAB) affects the selection of certain registers. Host Bus Interrupt. INT output is set high when the receiver error flag, receiver data available, transmitter holding register empty, or modem status interrupt have an active high condition. INT is reset low upon the appropriate interrupt service or master reset operation. Host Bus Write. –WR is an active low, write control input. When –DS is low, –WR low allows the host to write data or control words into a selected modem register. Host Bus Read. –RD is an active low, read control input. When –DS is low, –RD low allows the host to read status information or data from a selected modem register.

Host Bus Device Select. –DS input low enables the modem for read or write. +5V or 3.3V Supply (depends upon model). Analog Ground. This is tied common with DGND on the SocketModem. To

minimize potential ground noise issues, connect audio circuit return to AGND. Speaker Output. SPKR is a single ended-output. It is tied directly to the CODEC.

SocketModem Global MT5634SMI Developer’s Guide 13

Chapter 3 – Electrical Characteristics

Introduction

Electrical characteristics for the 5V Serial SocketModem, 3.3V Serial SocketModem, 5V Parallel SocketModem, and the 3.3V Parallel SocketModem are presented in this chapter.

I/O Electrical Characteristics

5V Serial – Standard (SMI) and Medical Device (SMI-HV) Build Options

5 Vdc Characteristics (TA = 0 °C to 50 °C; VDD = 5 V ± 0.25 V) VDDMAX = 5.25 V

Digital Inputs

–DTR (40), –TXD (35), –RTS (33), –RESET (24)

Digital Outputs

–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)

Digital Input Capacitance 5 PF

Input High

Min 3.675 V

Output High

Min. 4 V

Input Low

Max 1.4 V

Output Low

Max 0.4 V

Current Drive

2 ma

3.3V Serial – Industrial Temperature (SMI-ITP) Build Option

3.3 Vdc Characteristics (TA = -40 °C to 85 °C; VDD = 3.3 V ± 0.3 V) VDDMAX = 3.6 V

Digital Inputs

–DTR (40), –TXD (35), –RTS (33), –RESET (24)

Digital Outputs

–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)

Digital Input Capacitance 5 PF

Input High

Min 2.52 V

Output High

Min. 2.3 V

Input Low

Max 0.9 V

Output Low

Max 0.4 V

Current Drive

2 ma

5V Parallel – Standard (SMI) and Medical Device (SMI-HV) Build Options

5 Vdc Characteristics (TA = 0 °C to 50 °C; VDD = 5 V ± 0.25 V) VDDMAX = 5.25 V

Digital Inputs

–DS (40)

Input High

Min. 3.675 V

Max. 1.4 V

Digital Inputs (hysteresis input buffer)

A0 (31), A1 (25), A2 (34), –WR (32), –RD (33)

Digital Input / Output Output buffer can source 12 mA at 0.4 V

DO (37), D1 (38), D2 (29), D3 (39), D4 (35), D5 (36), D6 (41), D7 (27)

Digital Output

INT (30)

Digital Input Capacitance 5 PF

Input High

Min. 3.675 V

Input High

Min. 3.675 V

Output High

Min. 4 V

Input Low

Max. 1.4 V

Input Low

Max. 1.4 V

Output Low

Max 0.4 V

Current Drive

2 ma

SocketModem Global MT5634SMI Developer’s Guide 14

Chapter 3 – Electrical Characteristics

3.3V Parallel – Standard (SMI) and Industrial Temperature (SMI-ITP) Build Options

Electrical characteristics for Parallel MT5634SMI SocketModem devices are presented below.

3.3 Vdc Characteristics (TA = –40 °C to 85 °C; VDD = 3.3 V ± 0.3 V)

VDDMAX = 3.6 V

Digital Inputs

–DS (40)

Digital Inputs (hysteresis input buffer)

A0 (31), A1 (25), A2 (34), –WR (32), –RD (33)

Digital Input/Output Output buffer can source 12 mA at 0.4 V

DO (37), D1 (38), D2 (29), D3 (39), D4 (35), D5 (36), D6 (41), D7 (27)

Digital Output

INT (30)

Digital Input Capacitance 5 PF

Input High

Min 2.52 V

Input High

Min 2.52 V

Input High

Min 2.52 V

Output High

Min 2.3 V

Input Low

Max 0.9 V

Input Low

Max 0.9 V

Input Low

Max 0.9 V

Output Low

Max 0.4 V

Timing Requirements

Timing Requirements for Parallel Write

Parameter Min Max Unit

–DS to –WR Setup (low to low) 10 - ns A0, A1, A2 to –WR Setup (valid to low) 15 - ns –WR Pulse Width (low to high) 40 - ns D0–D7 to –WR Setup (valid to high) 30 - ns –WR to –DS hold (high to high) 0 - ns –WR to A0–A2 Hold (high to invalid) 0 - ns –WR to D0–D7 Hold (high to invalid) 0 - ns –WR interaccess (high to low)

Non-MIMIC Accesses MIMIC Accesses

10 110

ns ns

Current Drive

2 ma

Timing Requirements for Parallel Read

Parameter Min Max Unit

–DS to –RD Setup (low to low) 10 - ns A0, A1, A2 to –RD Setup (valid to low) 15 - ns –RD Pulse Width (low to high) 40 - ns –RD to –DS hold (high to high) 0 - ns –RD to A0–A2 Hold (high to invalid) 0 - ns –WR interaccess (high to low)

Non-MIMIC Accesses MIMIC Accesses

10 110

ns ns

Handling Precautions

All MOS devices must be handled with certain precautions to avoid damage due to the accumulation of static charge. Although input protection circuitry has been incorporated into the devices to minimize the effect of this static buildup, proper precautions should be taken to avoid exposure to electrostatic discharge during handling and mounting.

SocketModem Global MT5634SMI Developer’s Guide 15

Chapter 4 – SocketModem Parallel Interface – A Programmer’s Description

Chapter 4 – SocketModem Parallel

Interface – A Programmer’s

Description

SocketModem Parallel Interface Internal Registers

The SocketModem parallel interface is a mimic of a 16C550A UART. It is similar to the MIMIC interface used in the Zilog Z80189. The SocketModem mimic (MMM) takes advantage of this standard interface while replacing the serial to parallel data transfer with a less complicated parallel to parallel data transfer.

The MMM interface controls an 8-bit parallel data transfer which is typically interrupt driven. Interrupts usually indicate one or both of two conditions: (1) the receive (RX) FIFO has either reached a trigger level or time-out condition and needs to be emptied and/or (2) the transmit (TX) FIFO is empty and waiting for more data from the Host. An interrupt can also be triggered by a change in the modem status register (i.e., loss of carrier) or by the occurrence of errors in the line status register (overrun, parity, framing, break detect).

In addition to the receive and transmit FIFOs, there are twelve other control/status registers called the MMM register set which can be accessed through this interface.

SocketModem MIMIC (MMM) Operation

Data flow through MMM is bi-directional. Simultaneously, data can flow from the host through the transmit FIFO to the SocketModem controller, and data can flow from SocketModem controller through the receive FIFO to the Host. In the receive path, 8-bit data is asynchronously received (from the SocketModem controller) by the receive FIFO where it is stored along with associated three error bits. The error bits must arrive (via a SocketModem controller I/O write to MMM shadow line status register) prior to receiving the actual data bits. The error bits are then temporarily stored so they may be written, with associated data bits, to the 11-bit wide RX FIFO.

After every data write, the RX FIFO write pointer is incremented. RX FIFO trigger levels, data ready signal, and time-out counter are checked to see if a Host interrupt needs to be sent. The data ready signal will be activated and MMM sits poised to accept another data word.

We highly recommend the host should read the MMM IIR register to determine the type of interrupt. Then it might check bit 7 of the LSR to see if there are any errors in the data currently residing in the receive FIFO. Finally, it will (1) alternately read a data word through the RX FIFO read pointer and the error bits via the MMM LSR until the FIFO is empty, or (2) read successive data words (knowing there were no errors in the FIFO) until the trigger count is met.

A similar sequence occurs when data flows in the other direction (from host through transmit FIFO), except there is no error bit manipulation/checking involved.

SocketModem Global MT5634SMI Developer’s Guide 16

Chapter 4 – SocketModem Parallel Interface – A Programmer’s Description

FIFO Operation

The 16-byte transmit and receive data FIFOs are enabled by the FIFO Control Register (FCR) bit-0. You can set the receive trigger level via FCR bits 6/7. The receiver FIFO section includes a time-out function to ensure data is delivered to the external host. An interrupt is generated whenever the Receive Holding Register (RHR) has not been read following the loading of a character or the receive trigger level has been reached.

Receive (RX) FIFO

The RX FIFO can be configured to be 16 words deep and 11 bits wide. Each word in the RX FIFO consists of 8 data bits and 3 error bits. The RX block of the MMM contains read and write pointers and status flag circuitry that need only to be presented with data (for input), reset, read/write control signals, and read/write clock signals. The RX block of the MMM internally manages the FIFO register file and pointers, and it provides simultaneous read/write capability (no contention problems).

The RX block of the MMM provides data (for output), FIFO full flag, FIFO empty flag, and an almost full flag which uses an associated predefined trigger level (obtained from the MMM FCR control register) to signal when the trigger level has been met. Four possible trigger levels may be selected by programming bits 6-7 of the FCR control register.

A typical (interrupt driven) write to the RX block is a two-step process. The MMM micro-controller must first write the 3 error bits to a shadow MMM LSR status register. Next, the micro-controller writes the data to the RX FIFO and during this write operation, the 3 error bits are directly loaded from the LSR shadow register into the bits 810 of the selected (11 bit-wide) FIFO register. These error bits represent the parity error, framing error, and break interrupt signals associated with each data work transmission into the receive FIFO. When the receive FIFO is read, these error bits are loaded directly into bits 2-4 of the MMM LSR register.

A2 A1 A0 Register Name Register Description Host Access

0 0 0 0 0 0 1 1 1 1

0 0 1 1

0 0 0 1 1 1 0 0 1 1

0 0 1 0

0 0 1 0 0 1 0 1 0 1

0 1 1 0

RBR THR IER IIR FCR LCR MCR LSR MSR SCR

DLL DLM DLX MCX

Receive Buffer (RX FIFO) Transmit Holding (TX FIFO) Interrupt Enable Interrupt Identification FIFO Control Line Control Modem Control Line Status Modem Status Scratch pad LSB of Divisor Latch MSB of Divisor Latch Divisor Latch Status/Control

DLAB = 0 R only DLAB = 0 W only DLAB = 0 R/W DLAB = X R only DLAB = X W only DLAB = X R/W DLAB = 0 R/W DLAB = X R only DLAB = X R only DLAB = 0 R/W

DLAB = 1 R/W DLAB = 1 R/W DLAB = 1 R/W DLAB = 1 R/W

Note 1* The General Register set is accessible only when DS is a logic 0. Note 2* The Baud Rate register set is accessible only when DS is a logic 0 and LCR bit-7 is a logic 1.

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Chapter 4 – SocketModem Parallel Interface – A Programmer’s Description

Time Out Interrupts

The interrupts are enabled by IER bits 0-3. Care must be taken when handling these interrupts. Following a reset the transmitter interrupt is enabled, the SocketModem will issue an interrupt to indicate that transmit holding register is empty. This interrupt must be serviced prior to continuing operations.

The LSR register provides the current singular highest priority interrupt only. A condition can exist where a higher priority interrupt may mask the lower priority interrupt(s). Only after servicing the higher pending interrupt will the lower priority interrupt(s) be reflected in the status register. Servicing the interrupt without investigating further interrupt conditions can result in data errors. When two interrupt conditions have the same priority, it is important to service these interrupts correctly.

Receive Data Ready and Receive Time Out have the same interrupt priority (when enabled by IER bit-3). The receiver issues an interrupt after the number of characters received have reached the programmed trigger level. In this case the MMM FIFO may hold more characters than the programmed trigger level. Following the removal of a data byte, the user should recheck LSR bit-0 for additional characters. A Receive Time Out will not occur if the receive FIFO is empty. The time out counter is reset at the center of each stop bit received or each time the receive holding register (RHR) is read.

Register Functional Descriptions

The following table delineates the assigned bit functions for the twelve internal registers. The assigned bit functions are more fully defined in the following paragraphs.

Internal Registers

A2 A1 A0 Register

[Default] Note *3

General Register Set: Note 1*

0 0 0 RBR [XX] Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2 Bit-1 Bit-0 0 0 0 THR [XX] Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2 Bit-1 Bit-0 0 0 1 IER [00] 0 0 0 0 Modem

0 1 0 IIR [XX] FIFO

0 1 0 FCR [00] RX

0 1 1 LCR [00] Divisor

1 0 0 MCR [00] 0 0 0 Loop

1 0 1 LSR [60] RX

1 1 0 MSR [X0] CD RI DSR CTS Delta

1 1 1 SCR [FF] Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2 Bit-1 Bit-0

Special Register Set: Note *2

0 0 0 DLL [00] Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2 Bit-1 Bit-0 0 0 1 DLM [00] Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2 Bit-1 Bit-0

Note 1* The General Register set is accessible only when DS is a logic 0. Note 2* The Baud Rate register set is accessible only when DS is a logic 0 and LCR bit-7 is a logic 1. Note 3* The value between the square brackets represents the register's initialized HEX value, X = N/A.

BIT-7 BIT-6 BIT-5 BIT-4 BIT-3 BIT-2 BIT-1 BIT-0

enable

Trigger (MSB)

latch access (DLAB)

FIFO data error

FIFO enable RX trigger (LSB)

Set break

TX empty THR empty

Receive Status Interrupt

0 0 InterruptIDInterruptIDInterruptIDInterrupt

Detect change in FCR

Stick parity

THR Empty

TX FIFO overrun bit Even parity

back Break interrupt

DMA mode select

Parity enable

INT enable Framing error

-CD

Line

Status

interrupt

XMIT

FIFO

reset

0 Word

OUT 1 -RTS -DTR

Parity

error

Delta

-RI

Transmit Holding Register interrupt

RCVR FIFO reset

length bit-1

Overrun error

Delta

-DSR

Receive Holding Register interrupt

Pending FIFO enable

Word length bit-0

Receive data ready

Delta

-CTS

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Chapter 4 – SocketModem Parallel Interface – A Programmer’s Description

RBR Receive Buffer (RX FIFO)

All eight bits are used for receive channel data (host read/data in; host write/data out). The three error bits per byte are copied into bits 2, 3, and 4 of the LSR during each host I/O read; therefore, they are available for monitoring on a per-byte basis.

THR Transmit Holding Register (TX FIFO)

All eight bits are used for transmit channel data (host write/data out; host read/data in).

IER Interrupt Enable

Bits 4–7: Reserved and will always read 0. Bits 0-3: Set by host software only and cleared by software control or host reset. Bit 3: Enables modem status IRQ. If bits 0–3 of the MSR are set and this bit is set to 1 (enabled), a host

interrupt is generated.

Bit 2: Enables receive line status IRQ. If bits 1–4 (overrun, parity, framing, break errors) of the LSR are

set and this bit is set to a logic 1, a host interrupt is generated.

Bit 1: Enables transmit holding register IRQ. If bit 5 (transmit holding register empty) of the LSR is set

and this bit is set to a 1, a host interrupt is generated.

Bit 0: Enables received data available IRQ. If bit 0 (data ready) of the LSR is set and this bit is set to a 1,

a host interrupt is generated.

IIR Interrupt Identification (Read Only)

Bits 6–7: (FIFO enabled bits). These bits will read a 1 if FIFO mode is enabled and the 16450 enable bit is 0

(no force of 16450 mode).

Bits 4–5: Reserved and always read a 0. Bits 1–3: Interrupt ID bits. Bit 0: Interrupt pending. If logic 0 (in default mode), an interrupt is pending.

When the host accesses IIR, the contents of the register are frozen. Any new interrupts will be recorded, but not acknowledged during the IIR access. This requires buffering bits (0–3, 6–7) during IIR reads.

Bit 3 Bit 2 Bit 1 Priority Interrupt Source Interrupt Reset Control

011HighestOverrun, parity, framing, error

or break detect bits set by SocketModem Controller

0102ndReceived data trigger level RX FIFO drops below trigger

1102ndReceiver time-out with data in

RX FIFO

0013rdTX holding register empty Writing to TX holding register

Reading the LSR

level Read RX FIFO

or reading IIR when TX holding register is source of error

0004thMODEM status: CTS, DSR,

RI or DCD

Reading the MSR

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Chapter 4 – SocketModem Parallel Interface – A Programmer’s Description

FCR FIFO Control

Bits 6–7: Used to determine RX FIFO trigger levels. Bit 5: Used to detect a change in the FCR. Bit 4: TX FIFO overrun bit. Bit 3: DMA mode select. If bit 3 is a 0, the 16450 mode is enabled which does only single-byte transfers.

When bit 3 is a 1, it enables a multiple byte (FIFO mode) data transfer.

Bit 2: TX FIFO reset. This will cause TX FIFO pointer logic to be reset (any data in TX FIFO will be lost).

This bit is self clearing; however, a shadow bit exists that is cleared only when read by the host, thus allowing the host to monitor a FIFO reset.

Bit 1: RX FIFO reset. This will cause RX FIFO pointer logic to be reset (any data in RX FIFO will be lost).

This bit is self clearing; however, a shadow bit exists that is cleared only when read by the host, thus allowing the host to monitor a FIFO reset.

Bit 0: FIFO enable. The host writes this bit to logic 1 to put the block in FIFO mode. This bit must be a 1

when writing other bits in this register or they will not be programmed. When this bit changes state, any data in the FIFOs or the RBR and THR registers will be lost and any pending interrupts are cleared.

Bit 7 Bit 6 16 Deep FIFO Trigger Levels (# of bytes)

Default

001 014 108 1114

LCR Line Control

Bit 7: Divisor latch access bit. This bit allows the host, access to the divisor latch. Under normal

circumstances, the bit is set to 0 (provides access to the RX and TX FIFOs at address 0). If the bit is set to 1, access to transmitter, receiver, interrupt enable, and modem control registers is disabled. In this case, when an access is made to address 0, the divisor latch least (DLL) significant byte is accessed. Address 1 accesses the most significant byte (DLM). Address 7 accesses the DLX divisor latch register. Address 4 accesses the MCX status/control register.

Bit 6: Used to denote a host-generated set break condition. Bits 0,1,3,4,5: Used only in parity bit generation for the 7 bit data byte case. Bits 0 and 1 are used for word

length select (b0 = 0 and b1 = 1 is used for 7 bit data). Bit 3 is parity enable. Bit 4 is even parity select. Bit 5 is stick parity.

MCR Modem Control

Bits 5–7: Reserved, and will always be 0. Bit 4: Used for loopback. When a 1, bits 0–3 of the MCR are reflected in modem status register (MSR) as

follows: RI <= OUT1, DCD <= OUT2, DSR <= DTR,CTS <= RTS. Emulation of loopback feature of 16550 UART must be done by the host except for the above conditions. Also, when this bit is set, it allows for data loop back. This means the host can write a data word to the TX and immediately read back the same data word from the RX (in a manner similar to the 16550A).

Bit 3: Controls the signal used to 3-state the host interrupt. If 0, then an active-low L33xV output will be

set to 0, and this signal will be used to 3-state the host interrupt output pin.

Bits 0–2: Used during LOOP function. Bit 2: OUT1. Bit 1: Request to Send (RTS). Bit 0: Data terminal ready (DTR).

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Chapter 4 – SocketModem Parallel Interface – A Programmer’s Description

LSR Line Status

Bit 7: Error in RX FIFO. This bit is always set to 1 if at least one data byte in the RX FIFO has an error.

This will clear when there are no more errors in the RX FIFO.

Bit 6: Transmitter empty. This bit is the same as LSR bit 5 (THRE) in MMM Bit 5: Transmitter holding register empty. This bit is set to 1 when either the transmitter holding register

has been read (emptied) by the micro-controller (16450 mode) or the TX FIFO is empty (16550 mode). This bit is set to 0 when either the THR or the TX FIFO becomes not empty in 16450 mode. In 16550 mode, it is set to 0 only after the trigger level has been met since the last occurrence of TX FIFO empty. If the transmitter timer is enabled, a shadow bit exists which delays the timer setting this bit to 1. When reading this bit, the micro-controller will not see the delay. Both shadow and register bits are cleared when the host writes to the THR or TX FIFO in 16450 mode. The trigger level must be reached to clear the bit in 16550 (FIFO) mode.

Bits 2–4: Used for parity error, framing error, and break detect. These bits are written, indirectly, by the

micro-controller as follows: The bits are first written to the shadow bit locations when the microcontroller write accesses the LSR. When the next character is written to the receive buffer (RBR) or the RX FIFO, the data in the shadow bits is then copied to the RBR (16450 mode) or RX FIFO (16550 mode). In FIFO mode, bits become available to the host when the data byte associated with the bits is next to be read. In FIFO mode, with successive reads of the receiver, the status bits will be set if an error occurs on any byte. Once the micro-controller writes to the RBR or RX FIFO, the shadow bits are auto cleared. The register bits are updated with each host read.

Bit 1: Overrun error. This bit is set if the micro-controller makes a second write to RBR before the host

reads data in the buffer (16450 mode) or with a full RX FIFO (16550 mode). No data will be transferred to the RX FIFO under these circumstances. This bit is reset when the host reads the LSR.

Bit 0: Data ready bit. This bit is set to 1 when received data is available, either in the RX FIFO (16550

mode) or the RBR (16450 mode). This bit is set immediately upon the micro-controller writing data to the RBR or FIFO if the receive timer is not enabled, but it is delayed by the timer interval if the receive timer is enabled. For micro-controller read access, a shadow bit exists so that the microcontroller does not see the delay that the host sees. Both bits are cleared to logic 0 immediately upon reading all data in either RBR or RX FIFO.

MSR Modem Status

Bits 4 through 7 of the MSR can also take on the MCR bits 0 through 3 value when in MCR loop mode (i.e. when MCR b4 = 1). The transfer of bits in loop back has a null modem twist (i.e. MCR b0 goes to MSR b5 and MCR b1goes to MSR b4).

Bit 7: Data carrier detect (DCD) bit. Bit 6: Ring indicator (RI) bit. Bit 5: Data set ready (DSR) bit. Bit 4: Clear to send (CTS) bit. Bit 3: Delta data carrier detect pin. This bit is set to a 1 whenever the data carrier detect bit changes

state. It is reset when the host reads the modem status register.

Bit 2: Trailing edge ring indicator bit. This bit is set to 1 on the falling edge of the ring indicator bit. It is

reset when the host reads the modem status register.

Bit 1: Delta data set ready bit. This bit is set to 1 whenever the data set ready changes state. It is reset

when the host reads the modem status register.

Bit 0: Delta clear to send bit. This bit is a one whenever the clear to send bit changes state. It is reset

when the host reads the modem status register.

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Chapter 4 – SocketModem Parallel Interface – A Programmer’s Description

SCR Scratch

The host programmer uses this register for temporary data storage.

DLL Divisor Latch (LSByte)

This register contains low-order byte for the 16-bit clock divider. It is kept to maintain register set compatibility with the 16C550A interface. However, it is not used for clock generation since MMM does not require the generation of a real baud clock.

DLM Divisor Latch (MSByte)

This register contains high-order byte for the 16-bit clock divider. It is kept to maintain register set compatibility with the 16C550A interface. However, it is not used for clock generation, since MMM does not require the generation of a real baud clock.

Programming the Baud Rate Generator Registers DLM (MSB) and DLL (LSB) provides a user capability for selecting the desired final baud rate. The example in the Table below, shows the selectable baud rates available when using a 1.8432 MHz external clock input.

BAUD RATE GENERATOR PROGRAMMING TABLE

Baud Rate 16 x Clock Divisor (Decimal) DLM Value (HEX) DLL Value (HEX)

110 300 600 1200 2400 4800 9600

19.2K

38.4K

57.6K

115.2K

1047 384 192 96 48 24 12 6 3 2 1

04 01 00 00 00 00 00 00 00 00 00

17 80 C0 60 30 18 0C 06 03 02 01

SocketModem Global MT5634SMI Developer’s Guide 22

Chapter 5 – AT Commands, S-Registers, and Result Codes

Chapter 5 – AT Commands, S-Registers,

and Result Codes

Introduction

The AT commands are used to control the operation of your modem. They are called AT commands because the characters AT must precede each command to get the ATtention of the modem.

AT commands can be issued only when the modem is in command mode or online command mode.

· The modem is in command mode whenever it is not connected to another modem.

· The modem is in data mode whenever it is connected to another modem and ready to exchange data.

Online command mode is a temporary state in which you can issue commands to the modem while connected to another modem.

· To put the modem into online command mode from data mode, you must issue an escape sequence (+++) followed immediately by the AT characters and the command, e.g., +++ATH to hang up the modem. To return to data mode from online command mode, you must issue the command ATO.

To send AT commands to the modem you must use a communications program, such as the HyperTerminal applet in Windows 98/95 and NT 4.0, or some other available terminal program. You can issue commands to the modem either directly, by typing them in the terminal window of the communications program, or indirectly, by configuring the operating system or communications program to send the commands automatically. Fortunately, communications programs make daily operation of modems effortless by hiding the commands from the user. Most users, therefore, need to use AT commands only when reconfiguring the modem, e.g., to turn auto answer on or off.

The format for entering an AT command is ATXn, where X is the command and n is the specific value for the command, sometimes called the command parameter. The value is always a number. If the value is zero, you can omit it from the command; thus, AT&W is equivalent to AT&W0. Most commands have a default value, which is the value that is set at the factory. The default values are shown in the “AT Command Summary” (See below).

You must press ENTER (it could be some other key depending on the terminal program) to send the command to the modem. Any time the modem receives a command, it sends a response known as a result code. The most common result codes are OK, ERROR, and the CONNECT messages that the modem sends to the computer when it is connecting to another modem. See a table of valid result codes at the end of this chapter.

You can issue several commands in one line, in what is called a command string. The command string begins with AT and ends when you press ENTER. Spaces to separate the commands are optional; the command interpreter ignores them. The most familiar command string is the initialization string, which is used to configure the modem when it is turned on or reset, or when your communications software calls another modem.

AT Command Summary

Organization of AT Commands on the following pages: 1st, by the initial command character (e.g., &, +, %, etc.) 2nd, alphabetized by the second command character (Except for listing of AT).

Command Description AT

A A/ Bn Ds DS=y En Fn Hn In Mn

SocketModem Global MT5634SMI Developer’s Guide 23

Attention Code Answer Repeat Last Command Communication Standard Setting Dial Dial Stored Telephone Number Echo Command Mode Characters Echo Online Data Characters Hook Control Information Request Monitor Speaker Mode

Chapter 5 – AT Commands, S-Registers, and Result Codes

Nn On P Qn Sr=n Sr? T Vn Wn Xn Zn &Cn &Dn &En &Fn &Gn &Kn &Ln &Pn &Qn &Sn &Tn &V &Wn &Zy=x \An \Bn \Kn \Nn \Qn \Tn \Vn

-Cn %A %B %Cn %DCn %En %Hn %Rn %Sn $EBn $Dn $MBn $SBn #CBAn #CBDn # CBF? # CBFR # CBIn # CBNy=n # CBPn # CBRy # CBSn #Pn #Sx #S=x +VDR=x, y +++AT<CR> %%%AT<CR> V.92 Commands

Modulation Handshake Return Online to Data Mode Pulse Dialing Result Codes Enable/Disable Set Register Value Read Register Value Tone Dialing Result Code Format Result Code Options Result Code Selection Modem Reset Data Carrier Detect (DCD) Control Data Terminal Ready (DTR) Control XON/XOFF Pass-Through Load Factory Settings V.22bis Guard Tone Control Flow Control Selection Leased Line Operation Pulse Dial Make-to-Break Ratio Selection Asynchronous Communications Mode Data Set Ready (DSR) Control Loopback Test (V.54 Test) Commands Display Current Settings Store Current Configuration Store Dialing Command Select Maximum MNP Block Size Transmit Break Break Control Error Correction Mode Selection Flow Control Selection Inactivity Timer Protocol Result Code Data Calling Tone Adaptive Answer Result Code Enable View Numbers in Blacklist Data Compression Control AT Command Control Fallback and Fall Forward Control Direct Connect Enable Cisco Configuration Command Speed Response Asynchronous Word Length DTR Dialing Online BPS Speed Serial Port Baud Rate Callback Attempts Callback Delay Callback Failed Attempts Display Callback Failed Attempts Reset Local Callback Inactivity Timer Store Callback Password Callback Parity Callback Security Reset Callback Enable/Disable Set 11-bit Parity Enter Setup Password Store Setup Password Distinctive Ring Report Escape Sequence Remote Configuration Escape Sequence

SocketModem Global MT5634SMI Developer’s Guide 24

Chapter 5 – AT Commands, S-Registers, and Result Codes

AT Commands

Command: AT Attention Code Values: n/a Description: The attention code precedes all command lines except A/, A: and escape sequences.

Command: ENTER Key Values: n/a Description: Press the ENTER (RETURN) key to execute most commands.

Command: AAnswer Values: n/a Description: Answer call before final ring.

Command: A/ Repeat Last Command Values: n/a Description: Repeat the last command string. Do not precede this command with AT. Do not press E

to execute.

Command: Bn Communication Standard Setting Values: n = 0–3, 15, 16 Default: 0 and 15 Description: B0 Select ITU-T V.22 mode when modem is at 1200 bps.

B1 Select Bell 212A when modem is at 1200 bps. B2 Deselect V.23 reverse channel (same as B3). B3 Deselect V.23 reverse channel (same as B2). B15 Select V.21 when the modem is at 300 bps. B16 Select Bell 103J when the modem is at 300 bps.

NTER

Command: Ds Dial Values: s = dial string (phone number and dial modifiers) Default: none Description: Dial telephone number s, where s may up to 40 characters long and include the 0–9, *, #, ,

B, C, and D characters, and the L, P, T, V, W, S, comma (,), semicolon (;), !, @, ^ and $ dial string modifiers.

Dial string modifiers: L Redial last number. (Must be placed immediately after ATD.) P Pulse-dial following numbers in command. T Tone-dial following numbers in command (default). V Switch to speakerphone mode and dial the following number. Use ATH command to

hang up.

W Wait for a new dial tone before continuing to dial. (X2, X4, X5, X6, or X7 must be

selected.)

, Pause during dialing for time set in register S8. ; Return to command mode after dialing. (Place at end of dial string.) ! Hook flash. Causes the modem to go on-hook for one-half second, then off-hook

again.

@ Wait for quiet answer. Causes modem to wait for a ringback, then 5 seconds of

silence, before processing next part of command. If silence is not detected, the modem returns a NO ANSWER code.

^ Disable data calling tone transmission. $ Detect AT&T call card “bong” tone. The character should follow the phone number and

precede the user’s call card number: ATDT1028806127853500$123456789

Command: DS=y Dial Stored Telephone Number Values: n = 0–2 Default: none Description: Dial a number previously stored in directory number y by the &Zy=x command. Example:

ATDS=2

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Chapter 5 – AT Commands, S-Registers, and Result Codes

Command: En Echo Command Mode Characters Values: n = 0 or 1 Default: 1 Description: E0 Do not echo keyboard input to the terminal.

E1 Do echo keyboard input to the terminal.

Command: Fn Echo Online Data Characters Values: n = 1 Default: 1

F0 Enable online data character echo. (Not supported.) F1 Disable online data character echo (included for backward compatibility with some

software).

Command: Hn Hook Control Values: n = 0 or 1 Default: 0 Description: H0 Go on-hook (hang up).

H1 Go off-hook (make the phone line busy).

Command: In Information Request Values: n = 0–5, 9, 11 Default: None Description: I0 Display default speed and controller firmware version.

I1 Calculate and display ROM checksum (e.g., 12AB). I2 Check ROM and verify the checksum, displaying OK or ERROR. I3 Display default speed and controller firmware version. I4 Display firmware version for data pump (e.g., 94). I5 Display the board ID: software version, hardware version, and country ID I9 Display the country code (e.g., NA Ver. 1). I11 Display diagnostic information for the last modem connection, such as DSP and

firmware version, link type, line speed, serial speed, type of error correction/data compression, number of past retrains, etc.

Command: Mn Monitor Speaker Mode Values: n = 0, 1, 2, or 3 Default: 1 Description: M0 Speaker always off.

M1 Speaker on until carrier signal detected. M2 Speaker always on when modem is off-hook. M3 Speaker on until carrier is detected, except while dialing.

Command: Nn Modulation Handshake Values: n = 0 or 1 Default: 1 Description: N0 Modem performs handshake only at communication standard specified by S37 and the

B command.

N1 Modem begins handshake at communication standard specified by S37 and the B

command. During handshake, fallback to a lower speed can occur.

Command: On Return Online to Data Mode Values: 0, 1, 3 Default: None Description: O0 Exit online command mode and return to data mode (see +++AT<CR> escape

sequence ). O1 Issue a retrain and return to online data mode. O3 Issue a rate renegotiation and return to data mode.

Command: P Pulse Dialing Values: P, T Default: T Description: Configures the modem for pulse (non-touch-tone) dialing. Dialed digits are pulsed until a T

command or dial modifier is received.

Command: Qn Result Codes Enable/Disable Values: n = 0 or 1

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Chapter 5 – AT Commands, S-Registers, and Result Codes

Default: 0 Description: Q0 Enable result codes.

Q1 Disable result codes. Q2 Returns an OK for backward compatibility with some software.

Command: Sr=n Set Register Value Values: r = S-register number; n varies Default: None Description: Set value of register Sr to value of n, where n is entered in decimal format. E.g., S0=1.

Command: Sr? Read Register Value Values: r = S-register number Default: None Description: Read value of register Sr and display it in 3-digit decimal form. E.g., S2? gives the response

043.

Command: T Tone Dialing Values: P, T Default: T Description: Configures the modem for DTMF (touch-tone) dialing. Dialed digits are tone dialed until a P

command or dial modifier is received.

Command: Vn Result Code Format Values: n = 0 or 1 Default: 1 Description: V0 Displays result codes as digits (terse response).

V1 Displays result codes as words (verbose response).

Command: Wn Result Code Options Values: n = 0, 1, or 2 Default: 2 Description: W0 CONNECT result code reports serial port speed, disables protocol result codes.

W1 CONNECT result code reports serial port speed, enables protocol result codes. W2 CONNECT result code reports line speed, enables protocol result codes.

Command: Xn Result Code Selection Values: n = 0–7 Default: 4 Description: X0 Basic result codes (e.g., CONNECT); does not look for dial tone or busy signal.

X1 Extended result codes (e.g., CONNECT 46000 V42bis); does not look for dial tone or

busy signal.

X2 Extended result codes with NO DIALTONE; does not look for busy signal. X3 Extended result codes with BUSY; does not look for dial tone. X4 Extended result codes with NO DIALTONE and BUSY. X5 Extended result codes with NO DIALTONE and BUSY. X6 Extended result codes with NO DIALTONE and BUSY. X7 Basic result codes with NO DIALTONE and BUSY.

Command: Zn Modem Reset Values: n = 0 or 1 Default: None Description: Z0 Reset modem to profile saved by the last &W command.

Z1 Same as Z0.

Command: &Cn Data Carrier Detect (DCD) Control Values: n = 0, 1, 2 Default: 1 Description: &C0 Forces the DCD circuit to be always high.

&C1 DCD goes high when the remote modem’s carrier signal is detected, and goes low

when the carrier signal is not detected.

&C2 DCD drops on disconnect for time set by S18. It then goes high again (for some PBX

phone systems).

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Chapter 5 – AT Commands, S-Registers, and Result Codes

Command: &Dn Data Terminal Ready (DTR) Control Values: n = 0, 1, 2, or 3 Default: 2 Description: &D0 Modem ignores the true status of the DTR signal and responds as if it is always on.

&D1 If DTR drops while in online data mode, the modem enters command mode, issues

an OK, and remains connected.

&D2 If DTR drops while in online data mode, the modem hangs up. If the signal is not

present, the modem will not answer or dial.

&D3 If DTR drops, the modem hangs up and resets as if an ATZ command were issued.

Command: &En XON/XOFF Pacing Control Values: n = 12 or 13 Default: 12 Description: &E12 Disables XON/XOFF pacing.

&E13 Enables XON/XOFF pacing.

Command: &Fn Load Factory Settings Values: n = 0 Default: None Description: &F0 Load factory settings as active configuration.

Note: See also the Z command.

Command: &Gn V.22bis Guard Tone Control Values: n = 0, 1, or 2 Default: 0 Description: &G0 Disable guard tone.

&G1 Set guard tone to 550 Hz. &G2 Set guard tone to 1800 Hz.

Note: The &G command is not used in North America.

Command: &Kn Flow Control Selection Values: n = 0, 3, or 4 Defaults: 3 Description: &K0 Disable flow control.

&K3 Enable CTS/RTS hardware flow control. &K4 Enable XON/XOFF software flow control.

Command: &Ln Leased Line Operation Values: n = 0, 1, or 2 Defaults: 0 Description: &L0 The modem is set for standard dial-up operation.

&L1 The modem is set for leased line operation in originate mode. &L2 The modem is set for leased line operation in answer mode.

Note: For &L1 and &L2, there is a 30-second window between power up and the starting of

the leased line handshake. During this time, you can turn off the command, if desired.

Command: &Pn Pulse Dial Make-to-Break Ratio Selection Values: n = 0, 1, or 2 Default: 0 Description: &P0 60/40 make-to-break ratio

&P1 67/33 make-to-break ratio &P2 20 pulses per second

Note: The &P2 command is available only if the country code is set to Japan.

Command: &Qn Asynchronous Communications Mode Values: n = 0, 5, 6, 8, or 9 Default: 5 Description: &Q0 Asynchronous with data buffering. Same as \N0.

&Q5 Error control with data buffering. Same as \N3. &Q6 Asynchronous with data buffering. Same as \N0. &Q8 MNP error control mode. If MNP error control is not established, the modem falls back

according to the setting in S36.

&Q9 V.42 or MNP error control mode. If neither error control is established, the modem

falls back according to the setting in S36.

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Command: &Sn Data Set Ready (DSR) Control Values: n = 0 or 1 Default: 0 Description: &S0 DSR is always high (on).

&S1 DSR goes high only during a connection.

Command: &Tn Loopback Test (V.54 Test) Commands Values: n = 0, 1, 3, 6 Default: None Description: The modem can perform selected test and diagnostic functions. A test can be run only when

the modem is operating in non-error-correction mode (normal or direct mode). For tests 3 and 6, a connection between the two modems must be established. To terminate a test in progress, the escape sequence (+++AT) must be entered. &T0 Stops any test in progress. &T1 Starts a local analog loopback, V.54 Loop 3, test. If a connection exists when this

command is issued, the modem hangs up. When the test starts, a CONNECT message is displayed.

&T3 Starts local digital loopback, V.54 Loop 2, test. If no connection exists, ERROR is

returned.

&T6 Initiates a remote digital loopback, V.54 Loop 2, test without self-test. If no connection

exists, ERROR is returned.

Command: &V Display Current Settings Values: n/a Description: Displays the active modem settings.

Command: &Wn Store Current Configuration Values: n = 0 or 1 Default: 1 Description: &W0 Stores current modem settings in non-volatile memory and causes them to be loaded

at power-on

or following the ATZ command instead of the factory defaults. See also the &F

command.

&W1 Clears user default settings from non-volatile memory and causes the factory defaults

to be loaded at power-on or following the ATZ command.

Command: &Zy=x Store Dialing Command Values: y = 0–2

x = Dialing command Default: None Description: Stores dialing command x in memory location y. Dial the stored number using the command

ATDS=y. See Also the #CBS command, a callback security command.

Command: \An Select Maximum MNP Block Size Values: n = 0, 1, 2, or 3 Default: 3 Description: \A0 64-character maximum.

\A1 128-character maximum.

\A2 192-character maximum.

\A3 256-character maximum.

Command: \Bn Transmit Break Values: n = 0–9 in 100 ms units Default: 3 Description: In non-error-correction mode only, sends a break signal of the specified length to a remote

modem. Works in conjunction with the \K command.

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Command: \Kn Break Control Values: n = 0–5 Default: 5 Description: Controls the response of the modem to a break received from the computer, the remote

modem, or the \B command. The response is different for each of three different states.

Data mode. The modem receives the break from the computer:

\K0 Enter online command mode, no break sent to the remote modem.

\K1 Clear data buffers and send break to the remote modem.

\K2 Same as \K0.

\K3 Send break immediately to the remote modem .

\K4 Same as \K0.

\K5 Send break to the remote modem in sequence with the transmitted data.

Data mode. The modem receives the break from the remote modem:

\K0 Clear data buffers and send break to the computer.

\K1 Same as \K0.

\K2 Send break immediately to the computer.

\K3 Same as \K2.

\K4 Send break to the computer in sequence with the received data.

\K5 Same as \K4.

Online command mode. The modem receives a \Bn command from the computer:

\K0 Clear data buffers and send break to the remote modem.

\K1 Same as \K0.

\K2 Send break immediately to the remote modem.

\K3 Same as \K2.

\K4 Send break to the remote modem in sequence with the transmitted data.

\K5 Same as \K4.

Command: \Nn Error Correction Mode Selection Values: n = 0–5, or 7 Default: 3 Description: \N0 Non-error correction mode with data buffering (buffer mode; same as &Q6).

\N1 Direct mode.

\N2 MNP reliable mode. If the modem cannot make an MNP connection, it disconnects.

\N3 V.42/MNP auto-reliable mode. The modem attempts first to connect in V.42 error

correction mode, then in MNP mode, and finally in non-error correction (buffer) mode

with continued operation. \N4 V.42 reliable mode. If the modem cannot make a V.42 connection, it disconnects. \N5 V.42, MNP, or non-error correction (same as \ N3). \N7 V.42, MNP, or non-error correction (same as \ N3).

Command: \Qn Flow Control Selection Values: n = 0, 1, or 3 Default: 3 Description: \Q0 Disable flow control (same as &K0).

\Q1 XON/XOFF software flow control (same as &K4). \Q2 CTS-only flow control. Not supported. \Q3 RTS/CTS hardware flow control (same as &K3).

Command: \Tn Inactivity Timer Values: n = 0, 1–255 Default: 0 Description: Sets the time (in minutes) after the last character is sent or received that the modem waits

before disconnecting. A value of zero disables the timer. Applies only in buffer mode. Note: You can also set the inactivity timer by changing the value of S30.

Command: \Vn Protocol Result Code Values: n = 0, 1, or 2

Default: 1 Description: \V0 Disables the appending of the protocol result code to the DCE speed.

\V1 Enables the appending of the protocol result code to the DCE speed. \V2 Same as \V1.

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Command: \Xn XON/XOFF Pass-Through Values: n = 0 or 1 Default: 0 Description: \X0 Modem responds to and discards XON/XOFF characters.

\X1 Modem responds to and passes XON/XOFF characters. Note: This is also controlled via &E6 and &E7.

Command: -Cn Data Calling Tone Values: n = 0 or 1 Defaults: 1 Description: -C0 Disable V.25 data calling tone to deny remote data/fax/voice discrimination.

-C1 Enable V.25 data calling tone to allow remote data/fax/voice discrimination.

Command: %A Adaptive Answer Result Code Enable Values: n = 0 or 1 Default: 0 Description: The %A command controls whether the DATA or FAX result codes will be sent by the

modem. The modem must be in fax mode for this command to work. Also, the modem must be set to +FAA=1, which enables the modem to distinguish between a fax and a data call. When these commands are enabled, the modem sends DATA to the computer when it detects data tones, and FAX when it detects fax tones. These strings are used by some servers to select the appropriate communication program. %A0 Disables adaptive answer result codes. %A1 Enables adaptive answer result codes.

Command: %B View Numbers in Blacklist Values: n/a Description: If blacklisting is in effect, AT%B displays the numbers for which the last call attempted in the

previous two hours failed. In countries that do not require blacklisting, the ERROR result code appears.

Command: %Cn Data Compression Control Values: n = 0 or 1 Default: 1 Description: %C0 Disable V.42bis/MNP 5 data compression.

%C1 Enable V.42bis/MNP 5 data compression.

Command: %DCn AT Command Control Values: n = 0 or 1 Default: 0 Description: %DC0 The modem responds to AT commands.

%DC1 The modem ignores AT commands. Note: The modem will respond to AT%DC for 10 seconds after power-up.

Command: %En Fallback and Fall Forward Control Values: n = 0, 1, or 2 Default: 2 Description: %E0 Disable fallback and fall forward.

%E1 Enable fallback, disable fall forward. %E2 Enable fallback and fall forward.

Command: %Hn Direct Connect Enable Values: n = 0, 1 Default: 0 Description: %H0 Sets callback security to normal operation.

%H1 All callback security calls will be direct connect regardless of whether the password or

phone number has the - character.

Command: %Rn Cisco Configuration Values: n = 0, 1 Default: 0 Description: %R0 Disables Cisco configuration.

%R1 Sets E0, Q1, &D0, \N0, $SB9600, and %S1 for operation with a Cisco router.

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Command: %Sn Command Speed Response Values: n = 0, 1 Default: 0 Description: %S0 Sets modem to respond to AT commands at all normal speeds.

%S1 AT commands accepted at 115200 bps only. Commands at other speeds are ignored.

Command: $Dn DTR Dialing Values: n = 0 or 1 Default: 0 Description: $D0 Disables DTR dialing.

$D1 Dials the number in memory location 0 when DTR goes high.

Command: $EBn Asynchronous Word Length Values: n = 0 or 1 Default: 0 Description: $EB0 Enables 10-bit mode.

$EB1 Enables 11-bit mode.

Command: $MBn Online BPS Speed Values: n = speed in bits per second Default: 28,800 Description: $MB75 Selects CCITT V.23 mode

$MB300 Selects 300 bps on-line $MB1200 Selects 1200 bps on-line $MB2400 Selects 2400 bps on-line $MB4800 Selects 4800 bps on-line $MB9600 Selects 9600 bps on-line $MB14400 Selects 14400 bps on-line $MB19200 Selects 19200 bps on-line $MB28800 Selects 28800 bps on-line $MB33600 Selects 33600 bps on-line

Command: $RPn Ring Priority vs. AT Command Priority Values: n = 0 or 1 Default: 1 Description: $RP0 The AT command will have priority over the ring. S1 will be reset to 0 if an

AT command is received. This command is storable to memory.

$RP1 The ring will have priority over the AT command. S1 will increment even if an

AT command and ring are received together and the incoming call will be answered when S1 is equal to S0. Note: SocketModems do not detect ring cadence of TelTone telephone line simulators as a valid ring.

Command: $SBn Serial Port Baud Rate Values: n= speed in bits per second Default: 115200 Description: $SB300 Sets serial port to 300 bps

$SB1200 Sets serial port to 1200 bps $SB2400 Sets serial port to 2400 bps $SB4800 Sets serial port to 4800 bps $SB9600 Sets serial port to 9600 bpst $SB19200 Sets serial port to 19200 bps $SB38400 Sets serial port to 38400 bps $SB57600 Sets serial port to 57600 bps $SB115200 Sets serial port to 115200 bps $SB230400 Sets serial port to 230400 bps

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Command: +VDR=x, y Distinctive Ring Report Values: x = 0, 1 Distinctive Ring report control. See description.

y = 0–255 Minimum ring interval in 100 ms units. See description. Default: 0, 0 Description: Enables reporting of ring cadence information to the DTE and specifies the minimum ring

cadence that will be reported. The report format is one line per silence period and one line per ring period. The length of

the silence period is in the form DROF=number in units of 100 ms<CR><LF>, and the length of the ring is in the form DRON=number in units of 100 ms<CR> <LF>. The modem may produce a Ring event code after the DRON message if enabled by the y parameter. The y parameter must be set to a value equal to or smaller than the expected ring cadence in order to pass the report to the DTE. +VDR=0, n/a Disables Distinctive Ring cadence reporting. +VDR=1, 0 Enables Distinctive Ring cadence reporting. Other call progress result codes

(including RING) are reported as normal.

+VDR=1, >0 Enables Distinctive Ring cadence reporting. The RING result code is

reported after the falling edge of the ring pulse (i.e., after the DRON report). +VDR=? Displays the allowed values. +VDR? Displays the current value.

Command: #CBAn Callback Attempts Values: n = 1–255 Default: 4 Description: Sets the number of callback attempts that are allowed after passwords have been

exchanged between modems.

Command: #CBDn Callback Delay Values: n = 0–255 Default: 15 Description: Sets the length of time (in seconds) that the modem waits before calling back the remote

modem.

Command: #CBF? Callback Failed Attempts Display Values: n/a Default: n/a Description: Requests the number of failed callback passwords since reset or power-up. This number

can be stored to nonvolatile memory using the &W command.

Command: #CBFR Callback Failed Attempts Reset Values: n/a Default: n/a Description: Resets the number of failed callback passwords to 0. This does not reset the number stored

in nonvolatile memory.

Command: #CBIn Local Callback Inactivity Timer Values: n = 1–255 Default: 20 Description: Sets the time (in minutes) that the modem waits for a command before forcing the user to

enter the setup password again.

Command: #CBNy Values: y = 0–29

Defaults: None Description: Sets the callback security password for the y memory location. The password must have 6

=x Store Callback Password

x = password

to 10 characters, and cannot include the + or - characters.

Command: #CBPn Callback Parity Values: n = 0, 1, or 2 Default: 0 Description: Sets parity for the callback security messages.

#CBP0 No parity. #CBP1 Odd parity. #CBP2 Even parity.

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Command: #CBRy Callback Security Reset Values: y = 0–29 Default: None Description: Clears the password and phone number in the y memory location.

Command: #CBSn Callback Enable/Disable Values: n = 0, 1, 2, or 3 Default: 0 Description: #CBS0 Disables callback security.

#CBS1 Enables local and remote callback security. #CBS2 Enables remote callback security only. #CBS3 Disables callback security until local hangup or reset.

Command: #Pn Set 11-bit Parity Values: n = 0 or 1 Default: 2 Description: #P0 No parity.

#P1 Odd parity. #P2 Even parity.

Command: #Sx Enter Setup Password Values: x= password (1–8 characters, case sensitive) Default: MTSMODEM Description: Enters the remote configuration setup password.

Command: #S=x Store Setup Password Values: x= password (1–8 characters, case sensitive) Default: MTSMODEM Description: Stores a new remote configuration setup password.

Escape AT Commands

Command: +++AT<CR> Escape Sequence Values: n/a Description: Puts the modem in command mode (and optionally issues a command) while remaining

online. Type +++AT and up to two optional command characters; then press ENTER. Used mostly to issue the hang-up command: +++ATH<CR>.

Command: %%%AT<CR> Remote Configuration Escape Sequence Values: n/a Description: Initiates remote configuration mode while online with remote modem. The remote

configuration escape character (%) is defined in register S13.

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V.92 Commands

Command: +MS= Modulation Selection Values: See description. Defaults: See description. Description: This extended-format command selects modulation, enables or disables automode, and

specifies the highest downstream and upstream connection rates using one to four subparameters.

The command syntax is +MS=[mod][,[automode][,[0][,[max_rate][,[0][,[max_rx_rate]]]]]]<CR> Subparameters that are not entered retain their current value. Commas separate optional subparameters, and must be inserted to skip a subparameter. Example: +MS=,0<CR> disables automode and keeps all other settings at their current values.

+MS=? Reports supported options in the format (list of supported mod values),(list of supported

automode values),(0),(list of supported max_rate values),(0),(list of supported max_rx_rate values). Example: +MS: (BELL103, V21, BELL212A, V22, V22B, V23C, V32, V32B, V34, V90, V92), (0, 1), (0), (0-33600), (0), (0-56000)

+MS? Reports current options in the format mod, automode, 0, max_rate, 0, max_rx_rate.

Example: +MS: V92, 1, 0, 31200, 0, 56000.

Subparameters

mod Specifies the preferred modulation (automode enabled) or the modulation to use in

originating or answering a connection (automode disabled). The default is V92.

mod

V92

Modulation Possible rates (bps)

V92 56000, 54666, 53333, 52000, 50666, 49333,

48000, 46666, 45333, 44000, 42666, 41333. 40000, 38666, 37333, 36000, 34666, 33333, 32000, 30666, 29333, or 28000

V903 V.90 56000, 54666, 53333, 52000, 50666, 49333,

48000, 46666, 45333, 44000, 42666, 41333. 40000, 38666, 37333, 36000, 34666, 33333, 32000, 30666, 29333, or 28000

V34 V.34 33600, 31200, 28800, 26400, 24000,

21600,19200, 16800, 14400, 12000, 9600,

7200, 4800, or 2400 V32B V.32bis 14400, 12000, 9600, 7200, or 4800 V32 V.32 9600 or 4800 V22B V.22bis 2400 or 1200 V22 V.22 1200 V23C V.23 1200 V21 V.21 300

Bell212A Bell 212A 1200 Bell103 Bell 103 300

Notes:

1. See optional <automode>, <max_rate>, and <max_RX_rate>

subparameters.

2. Selects V.92 modulation as first priority. If a V.92 connection

cannot be established, the modem attempts V.90, V.34, V.32bis, etc.

3. Selects V.90 modulation as first priority. If a V.90 connection

cannot be established, the modem attempts V.34, V.32bis, etc.

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automode An optional numeric value that enables or disables automatic modulation negotiation using

V.8 bis/V.8 or V.32 bis Annex A. Automode is disabled if values are specified for the max_rate and max_rx_rate parameters. The options are:

0 Disable automode 1 Enable automode (default)

max_rate An optional number that specifies the highest rate at which the modem may establish an

upstream (transmit) connection. The value is decimal coded in units of bps, for example, 33600 specifies the highest rate to be 33600 bps.

0 Maximum rate determined by the modulation selected in mod (default).

300–33600 Maximum rate value limited by the modulation selected in mod. For valid max_rate values

for each mod value, see the following table.

mod value Valid max_rate values (bps)

V92, V90, V34 31200, 28800, 26400, 24000, 21600,19200,

16800, 14400, 12000, 9600, 7200, 4800, 2400 V32B 19200, 16800, 14400, 12000, 9600, 7200, 4800 V32 14400, 12000, 9600, 7200, 4800 V22B 2400 V22, V23C, Bell212A 1200 V21, Bell103 300

max_rx_rate An optional number that specifies the highest rate at which the modem may establish a

downstream (receive) connection. The value is decimal coded in units of bps, e.g., 28800 specifies the highest rate to be 28800 bps.

0 Maximum rate determined by the modulation selected in mod (default).

300–56000 Maximum rate value limited by the modulation selected in mod. See “Possible rates” in the

mod table.

Command: +PCW=n Call Waiting Enable Values: n = 0, 1, or 2 Default: 2 Description: Controls the action to be taken upon detection of a call waiting tone in V.92 mode. Values

specified by this command are not modified when an AT&F command is issued. +PCW=0 Toggles V.24 Circuit 125 and collects Caller ID if enabled by +VCID +PCW=1 Hangs up +PCW=2 Ignores V.92 call waiting +PCW=? Displays the allowed values +PCW? Displays the current value

Command: +PIG=n PCM Upstream Ignore Values: n = 0 or 1 Default: 1 Description: Controls the use of PCM upstream during V.92 operation. PCM upstream allows faster

upload speeds to a V.92 server. +PIG=0 Disables PCM upstream +PIG=1 Enables PCM upstream +PIG=? Displays the allowed values +PIG? Displays the current value

Command: +PMH=n Modem on Hold Enable Values: n = 0 or 1 Default: 1 Description: Controls if modem on hold procedures are enabled during V.92 operation. Normally

controlled by a modem on hold program. Values specified by this command are not modified when an +PMH=0 Enables V.92 modem on hold +PMH=1 Disables V.92 modem on hold +PMH=? Displays the allowed values +PMH? Displays the current value

AT&F command is issued.

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Command: +PMHF V.92 Modem Hook Flash Values: n/a Default: n/a Description: Causes the DCE to go on-hook for a specified period of time, and then return off-hook for at

least a specified period of time. The specified period of time is normally one-half second, but may be governed by national regulations. “ERROR” is returned if MOH is not enabled.

Command: +PMHR=n Modem on Hold Initiate Values: n = 0–13 Default: 0 Description:

+PMHR is an action command that causes the modem to initiate MOH with the central site

modem. It returns the following values to indicate what has been negotiated. Valid only if MOH is enabled and the modem is off-hook or in data mode. Otherwise, ERROR will be returned.

+PMHR=0 Deny MOH request +PMHR=1 Grant MOH request with 10 second timeout +PMHR=2 Grant MOH request with 20 second timeout +PMHR=3 Grant MOH request with 30 second timeout +PMHR=4 Grant MOH request with 40 second timeout +PMHR=5 Grant MOH request with 1 minute timeout +PMHR=6 Grant MOH request with 2 minute timeout +PMHR=7 Grant MOH request with 3 minute timeout +PMHR=8 Grant MOH request with 4 minute timeout +PMHR=9 Grant MOH request with 6 minute timeout +PMHR=10 Grant MOH request with 8 minute timeout +PMHR=11 Grant MOH request with 12 minute timeout +PMHR=12 Grant MOH request with 16 minute timeout +PMHR=13 Grant MOH request with indefinite timeout +PMHR=? Displays the allowed values +PMHR? Displays the current value

Command: +PMHT=n Modem on Hold Timer

Values: n = 0–13

Default: 0 Description: Determines if the modem will accept a V.92 Modem on Hold (MOH) request and will set the

MoH timeout.

+PMHT=0 Deny MOH request +PMHT=1 Grant MOH request with 10 second timeout +PMHT=2 Grant MOH request with 20 second timeout +PMHT=3 Grant MOH request with 30 second timeout +PMHT=4 Grant MOH request with 40 second timeout +PMHT=5 Grant MOH request with 1 minute timeout +PMHT=6 Grant MOH request with 2 minute timeout +PMHT=7 Grant MOH request with 3 minute timeout +PMHT=8 Grant MOH request with 4 minute timeout +PMHT=9 Grant MOH request with 6 minute timeout +PMHT=10 Grant MOH request with 8 minute timeout +PMHT=11 Grant MOH request with 12 minute timeout +PMHT=12 Grant MOH request with 16 minute timeout +PMHT=13 Grant MOH request with indefinite timeout +PMHT=? Displays the allowed values +PMHT? Displays the current value

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Command: +PQC=n Quick Connect Control Values: n = 0, 1, 2, or 3 Default: 3 Description: Controls the V.92 shortened Phase 1 and Phase 2 startup procedures (Quick Connect).

When line conditions are stable, quick connect results in shortened connect times; however, significant fluctuation in line conditions from call to call can result in longer connect times, in which case it may be advisable to disable quick connect.

+PQC=0 Enables Short Phase 1 and Short Phase 2 (Quick Connect) +PQC=1 Enables Short Phase 1 +PQC=2 Enables Short Phase 2 +PQC=3 Disables Short Phase 1 and Short Phase 2 +PQC=? Displays the allowed values +PQC? Displays the current value

Command: +VCID=n Caller ID Selection Values: n = 0, 1, or 2 Default: 0 Description: Enables Caller ID detection and configures the reporting and presentation of the Caller ID

data that is detected after the first ring. The reported data includes the date and time of the call, the caller's name and number, and a message. Set S0=2.

+VCID=0 Disables Caller ID +VCID=1 Enables Caller ID with formatted data +VCID=2 Enables Caller ID with unformatted data +VCID=? Displays the allowed values +VCID? Displays the currrent value

Command: +VDR=x, y Distinctive Ring Report Values: x = 0, 1 Distinctive Ring report control. See description.

y = 0–255 Minimum ring interval in 100 ms units. See description. Default: 0, 0 Description: Enables reporting of ring cadence information to the DTE and specifies the minimum ring

cadence that will be reported.

The report format is one line per silence period and one line per ring period. The length of

the silence period is in the form DROF=number in units of 100 ms<CR><LF>, and the length

of the ring is in the form DRON=number in units of 100 ms<CR> <LF>. The modem may

produce a Ring event code after the DRON message if enabled by the y parameter. The y

parameter must be set to a value equal to or smaller than the expected ring cadence in

order to pass the report to the DTE.

+VDR=0, n/a Disables Distinctive Ring cadence reporting.

+VDR=1, 0 Enables Distinctive Ring cadence reporting. Other call progress result codes

(including RING) are reported as normal.

+VDR=1, >0 Enables Distinctive Ring cadence reporting. The RING result code is reported after

the falling edge of the ring pulse (i.e., after the DRON report). +VDR=? Displays the allowed values. +VDR? Displays the currrent value.

Command: #CBAn Callback Attempts Values: n = 1–255 Default: 4 Description: Sets the number of callback attempts that are allowed after passwords have been

exchanged between modems.

Command: #CBDn Callback Delay Values: n = 0–255 Default: 15 Description: Sets the length of time (in seconds) that the modem waits before calling back the remote

modem.

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Command: #CBF? Callback Failed Attempts Display Values: n/a Default: n/a Description: Requests the number of failed callback passwords since reset or power-up. This number

can be stored to nonvolatile memory using the &W command.

Command: #CBFR Callback Failed Attempts Reset Values: n/a Default: n/a Description: Resets the number of failed callback passwords to 0. This does not reset the number stored

in nonvolatile memory.

Command: #CBIn Local Callback Inactivity Timer Values: n = 1–255 Default: 20 Description: Sets the time (in minutes) that the modem waits for a command before forcing the user to

enter the setup password again.

Command: #CBNy=x Store Callback Password Values: y = 0–29

x = password

Defaults: None Description: Sets the callback security password for the y memory location. The password must have 6

to 10 characters, and cannot include the + or - characters.

Command: #CBPn Callback Parity Values: n = 0, 1, or 2 Default: 0 Description: Sets parity for the callback security messages.

#CBP0 No parity. #CBP1 Odd parity. #CBP2 Even parity.

Command: #CBRy Callback Security Reset Values: y = 0–29 Default: None Description: Clears the password and phone number in the y memory location.

Command: #CBSn Callback Enable/Disable Values: n = 0, 1, 2, or 3 Default: 0 Description: #CBS0 Disables callback security.

#CBS1 Enables local and remote callback security. #CBS2 Enables remote callback security only. #CBS3 Disables callback security until local hangup or reset.

Command: #Pn Set 11-bit Parity Values: n = 0 or 1 Default: 2 Description: #P0 No parity.

#P1 Odd parity. #P2 Even parity.

Command: #Sx Enter Setup Password Values: x= password (1–8 characters, case sensitive) Default: MTSMODEM Description: Enters the callback security setup password.

Command: #S=x Store Setup Password Values: x= password (1–8 characters, case sensitive) Default: MTSMODEM Description: Stores a new callback security and remote configuration setup password.

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S-Registers

Certain modem values, or parameters, are stored in memory locations called S-registers. Use the S command to read or to alter the contents of S-registers (see previous section).

Register Unit Range Default Description S0 1 ring 0, 1–255 1 Sets the number of rings until the modem answers. ATS0=0 disables

auto answer completely.

S1 1 ring 0–255 0 Counts the rings that have occurred.

S2 decimal 0–127 43 (+) Sets ASCII code for the escape sequence character.

128–255 Values greater than 127 disable escape.

S3 decimal 0–127 13 (^M) Sets the ASCII code for the carriage return character.

S4 decimal 0–127 10 (^J) Sets the ASCII code for the line feed character.

S5 decimal 0–32 8 (^H) Sets the ASCII code for the backspace character.

33–127 Values greater than 32 disable backspace.

S6 seconds 2–65* 2* Sets the time the modem waits after it goes off-hook before it begins

to dial the telephone number.

S7 seconds 35-65* 50* Sets the time the modem waits for a carrier signal before aborting a

call. Also sets the wait for silence time for the @ dial modifier.

S8 seconds 0–65 2 Sets the length of a pause caused by a comma character in a dialing

command.

S9 decimal 0, 1–127 37 (%) Sets ASCII code for remote configuration escape character. S9=0

disables remote configuration.

S10 100 ms 1–254 20 Sets how long a carrier signal must be lost before the modem

disconnects.

S11 1 ms 50–150* 95* Sets spacing and duration of dialing tones.

S28 decimal 0, 1–255 1 0 disables, 1–255 enables V.34 modulation.

S30 1 minute 0, 1–255 0 Sets the length of time that the modem waits before disconnecting

when no data is sent or received. A value of zero disables the timer. See also the \T command

S35 decimal 0–1 1 0 disables, 1 enables the V.25 calling tone, which allows remote

data/fax/voice discrimination.

S36 decimal 0–7 7 Specifies the action to take in the event of a negotiation failure when

error control is selected. (See S48.)

S37 decimal 0–19 0 Sets the maximum V.34 “upstream” speed at which the modem

attempts to connect. 0 = maximum speed 1 = reserved 2 = 1200/75 bps 3 = 300 bps 4 = reserved 5 = 1200 bps 6 = 2400 bps 7 = 4800 bps 8 = 7200 bps 9 = 9600 bps 10 = 12000 bps 11 = 14400 bps 12 = 16800 bps 13 = 19200 bps 14 = 21600 bps 15 = 24000 bps 16 = 26400 bps 17 = 28800 bps

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18 = 31200 bps 19 = 33600 bps

S38 decimal 0–23 1 Sets “downstream” data rate where V.90 provides rates of 28,000 to

56,000 bps in increments of 1,333 bps. 0 = V.90 disabled 1 = V.90 auto rate 2 = 28,000 bps 3 = 29,333 bps 4 = 30,666 bps 5 = 32,000 bps 6 = 33,333 bps 7 = 34,666 bps 8 = 36,000 bps 9 = 37,333 bps 10 = 38,666 bps 11 = 40,000 bps 12 = 41,333 bps 13 = 42,666 bps 14 = 44,000 bps 15 = 45,333 bps 16 = 46,666 bps 17 = 48,000 bps 18 = 49,333 bps 19 = 50,666 bps 20 = 52,000 bps 21 = 53,333 bps 22 = 54,666 bps 23 = 56,000 bps Upstream data rates: Upstream V.90 data rates are 4800 to 33,600 bps in 2400 bps increments.

S43 decimal 0–1 1 For testing and debugging only. Enables/disables V.32bis start-up

auto mode operation. 0 = disable; 1 = enable.

S48 decimal 7 or 128 7 Enables (7) or disables (128) LAPM negotiation. The following table

lists the S36 and S48 configuration settings for certain types of connections.

S48=7 S48=128

S36=0, 2 LAPM or hang up Do not use S36=1, 3 LAPM or async Async S36=4, 6 LAPM, MNP, or hang up MNP or hang up S36=5, 7 LAPM, MNP, or async MNP or async

S89 seconds 0, 5–255 10 Sets the length of time in the off-line command mode before the

modem goes into standby mode or “sleep mode”. A value of zero prevents standby mode; a value of 1–4 sets the value to 5. Standby mode (sleep mode or low power mode) is controlled by S89. It programs the number of seconds of inactivity before the modem will go to sleep. The default value is 0. A value of 0 disables standby mode. The modem will wake on an incoming ring or an AT command.

S108 decimal 0–3, 6, 7 6 Selects the 56K digital loss if using the modem through a PBX line.

The default value is -6 dB loss, the value used when calling from a typical POTS line long distance.

0 = -0 dB digital loss, no robbed-bit signaling 1 = -3 dB PBX digital loss 2 = -2 dB digital loss 3 = -3 dB digital loss 6 = -6 dB digital loss 7 = -0 dB digital loss with robbed-bit signaling

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Result Codes

In command mode your modem can send responses called Result Codes to your computer. Result codes are used by communications programs and can also appear on your monitor.

Terse Verbose

0 OK Command executed 1 CONNECT Modem connected to line 2 RING Ring signal detected 3 NO CARRIER Carrier signal lost or not detected 4 ERROR Invalid command 5 * CONNECT 1200 Connected at 1200 bps 6 NO DIALTONE No dial tone detected 7 BUSY Busy signal detected 8 NO ANSWER No answer at remote end 9 CONNECT 75 Connected at 75 bps 10* CONNECT 2400 Connected at 2400 bps 11* CONNECT 4800 Connected at 4800 bps 12* CONNECT 9600 Connected at 9600 bps 13* CONNECT 14400 Connected at 14400 bps 14* CONNECT 19200 Connected at 19200 bps 18 CONNECT 57600 Connected at 57600 bps 24* CONNECT 7200 Connected at 7200 bps 25* CONNECT 12000 Connected at 12000 bps 28 CONNECT 38400 Connected at 38400 bps 40* CONNECT 300 Connected at 300 bps 55* CONNECT 21600 Connected at 21600 bps 56* CONNECT 24000 Connected at 24000 bps 57* CONNECT 26400 Connected at 26400 bps 58* CONNECT 28800 Connected at 28800 bps 59* CONNECT 31200 Connected at 31200 bps 60* CONNECT 33600 Connected at 33600 bps 70 CONNECT 32000 Connected at 32000 bps 71 CONNECT 34000 Connected at 34000 bps 72 CONNECT 36000 Connected at 36000 bps 73 CONNECT 38000 Connected at 38000 bps 74 CONNECT 40000 Connected at 40000 bps 75 CONNECT 42000 Connected at 42000 bps 76 CONNECT 44000 Connected at 44000 bps 77 CONNECT 46000 Connected at 46000 bps 78 CONNECT 48000 Connected at 48000 bps 79 CONNECT 50000 Connected at 50000 bps 80 CONNECT 52000 Connected at 52000 bps 81 CONNECT 54000 Connected at 54000 bps 82 CONNECT 56000 Connected at 56000 bps 83 CONNECT 58000 Connected at 58000 bps 84 CONNECT 60000 Connected at 60000 bps 86 CONNECT 16800 Connected at 16800 bps 87 CONNECT 115200 Connected at 115200 bps 88 DELAYED Delay is in effect for the dialed number 89 BLACKLISTED Dialed number is blacklisted 90 BLACKLIST FULL Blacklist is full 91 CONNECT 230400 Connected at 230400 bps 100 CONNECT 28000 Connected at 28000 bps 101 CONNECT 29333 Connected at 29333 bps 102 CONNECT 30666 Connected at 30666 bps 103 CONNECT 33333 Connected at 33333 bps 104 CONNECT 34666 Connected at 34666 bps 105 CONNECT 37333 Connected at 37333 bps 106 CONNECT 38666 Connected at 38666 bps 107 CONNECT 41333 Connected at 41333 bps 108 CONNECT 42666 Connected at 42666 bps 109 CONNECT 45333 Connected at 45333 bps 110 CONNECT 46666 Connected at 46666 bps

Description

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111 CONNECT 49333 Connected at 49333 bps 112 CONNECT 50666 Connected at 50666 bps 113 CONNECT 53333 Connected at 53333 bps 114 CONNECT 54666 Connected at 54666 bps 115 CONNECT 25333 Connected at 25333 bps 116 CONNECT 26666 Connected at 26666 bps

* EC is added to these result codes when the extended result codes configuration option is enabled. EC is replaced by one of the following codes, depending on the type of error control connection:

V42bis – V.42 error control (LAP-M) and V.42bis data compression V42 – V.42 error control (LAP-M) only MNP5 – MNP 4 error control and MNP 5 data compression MNP4 – MNP 4 error control only NoEC – No error control protocol).

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Chapter 6 – Voice Commands

Chapter 6 - Voice Commands

Introduction

This chapter describes +V command support. The +V Command standard IS-101 Voice Control Interim Standard for Asynchronous DCE (prepared by the TIA Technical Subcommittee TR29.2 on Facsimile Digital Interface) defines the commands that a PC user may issue to configure and control a voice/fax/data modem, and the responses (result codes) that the voice/fax/data modem may issue in response to those commands.

The +V commands and responses provide control of the following services:

· Recording and playback of digitized voice.

· Generation and detection of DTMF and other tones.

· Switching between voice, fax, and data modes.

· Control-related functions.

The Voice mode has three states, which correspond to the direction of voice data flow:

Voice command state (event reports only; no data transfers).

Voice transmit state (digitized, half-duplex voice data transfers from PC to modem). Voice receive state, (digitized, half-duplex voice data transfers from modem to PC).

The modem supports three levels of voice service: Service Levels A, B, and C. Service Level A provides the lowest level of services. Service level A performs operations and detects events as follows: Voice transmit, Voice receive, and DTMF generation and Single tone generation. The following events (Result Codes) are reported: 3, 4, 5, 6, 9, 10, 18, 19, 23, 25.

Service Level B provides an optionally greater amount of services, providing DTMF and facsimile calling tone detection during voice transmits in addition to Service Level A. Service Level B provides event- reporting similar to Service Level A, but with added event reporting states (e.g., fax calling in transmit state in addition to reporting in command state).

Service Level C provides the highest service level with the addition of facsimile calling tone and Busy detection during receives, Dial Tone detection, and double-tone detection. An example of event detection in a Service Level C modem is shown below:

AT+VEM=? "C" 0A000100 0E601800 1A803840 OK

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Voice S-Register Summary

Voice mode S-Register changes are outlined below.

S-Register Description

S0 Automatic answer is disallowed in Voice mode. S7 Wait for Carrier After Dial. Default is 60 seconds. In Voice mode, S7 contains the maximum

amount of time that the modem will wait during Call Origination, all the time detecting for ring backs, before assuming that the remote station will not go off hook.

S10 Automatic disconnect is disallowed in Voice mode.

Voice Commands

The +V Voice enhancements are implemented with AT+V (for Voice) commands, as well as changes to several existing commands.

In general, the modem does not accept Data mode (+FCLASS=0) commands or Fax mode (+FCLASS=1, 2, 2.0) commands when in Voice mode (+FCLASS=8).

Commands That Change for Voice Mode Support

Command Description

A Disallowed in Voice mode. D Causes the modem to Dial assuming +VLS=2 if +VLS=0 when the ATD command was

entered.

H Values greater than 0 disallowed in Voice mode. I Disallowed in Voice mode. L Disallowed in Voice mode. M Disallowed in Voice mode. O Disallowed in Voice mode. Q Disallowed in Voice mode. X Disallowed in Voice mode. Z Reset modem. &D &D1 is disallowed in Voice mode. +FCLASS=8 Places the modem in Voice mode. +FCLASS= New values are added for Voice mode. +FCLASS=? New values are added for Voice mode.

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Voice +V Commands Summary

These commands support Voice mode.

Command Description

+VNH= Automatic Hang Up Control +FMI? Report Manufacturer's ID +FMM? Report Product ID +FMR? Report Version Level +FLO= Select Flow Control Method +VIP Initialize Voice Parameters +VRX Enter Voice Receive State +VTS Produce DTMF and Tone Generation in Voice Mode +VTS=? Report Frequency Support +VTX Start Voice Transmission Process +VGR= Set the Gain for Received Voice Samples +VGT= Set the Volume for Transmitted Voice Samples +VIT Set DTE/DCE Inactivity Timer +VLS= Select Analog Source/Destination +VLS=? Identify Analog Source/Destination Configuration and Event Reporting Capabilities +VRA= Set Ring back Goes Away Timer +VRN= Set Ring back Never Appeared Timer +VSD= Set Silence Detection Sensitivity +VSM= Select Voice Compression Method +VSM=? Report Voice Compression Method +VTD= Select Default Beep Tone Duration Timer (DTMF/Tone Generation Duration) +VDR= Enable/Disable Distinctive Ring (Ring Cadence Reporting) +VDT= Control Tone Cadence Reporting +VEM= Event Reporting and Masking +VEM=? Report Event Reporting and Masking Capabilities +VBT= Set Modem Flow Control Assert and De-Assert Points +VBT=? Report Modem Flow Control Assert and De-Assert Points +VPP= Enable or Disable Voice Mode Packet Protocol +VPR= Select DTE/DCE Interface Rate (Turn Off Autobaud)

Voice +V Commands Detail

Command: +FCLASS= <mode> <Enter> Select Modem Operating Mode Values: 0, 1, 2.0, 2, 3-7, 8, 9-15, 16-255 Default: 0 Result Codes: OK if the command is accepted; ERROR if the parameter value is out of range. Description: The +FCLASS= command selects the mode of operation (data, facsimile, or voice), as shown

below. +FCLASS= Modem Operating Mode 0 selects data modem mode 1 selects Service Class 1 (fax/data) modem mode

2.0 selects Class 2.0 fax/data modem mode 2 selects non-standard Class 2 modem 3-7 reserved for other Fax modes 8 selects IS-101 Voice mode 9–15 reserved for other Voice modes 16–255 reserved for future standards

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Command: +FCLASS=8 DTMF Detect Detect and Control DTMF Values: 8 characters, case sensitive Description: The +FCLASS=8 command is used to detect and control DTMF using the procedure below:

1. Enter the command AT+FCLASS=8 <cr> to the modem.

2. Call into modem with phone. A Ør (incoming ring indication) is displayed, followed by OK. The

modem is now in Online Voice Command mode, allowing DTMF characters to be passed through from the remote phone. The characters are displayed as shown below: AT+FCLASS=8

ØR is Ring Ø/Ø1Ø1Ø~

The Data link escape character (Ø), and the ‘start of DTMF tone shielding’ character (¤) are both output once a button is pressed. The DTMF digit will continue to be output along with a Ø until the button is released. Then another Ø is output along with a ‘DTMF transitions to off’ (~) character. Silence on the line is indicated with a (Øs) displayed. DTMF (dual tone multi frequency) is the signal to the phone company that you generate when you

press an ordinary telephone’s touch keys. DTMF has generally replaced loop disconnect (“pulse” or “rotary”) dialing. With DTMF, each key you press on your phone generates two tones of specific frequencies. So that a voice can’t imitate the tones, one tone is generated from a high-frequency group of tones and the other from a low frequency group.

Touch Tone Signals Digit Low frequency High frequency

1 697 Hz 1209 Hz 2 697 1336 3 697 1477 4 770 1209 5 770 1336 6 770 1477 7 852 1209 8 852 1336 9 852 1477 0 941 1336 * 941 1209 # 941 1477

When any key is pressed, both the high and low tones of the row are generated, hence the name “dual tone”. For example, pressing the ‘5’ button generates the tones 770Hz and 1336Hz. The frequencies were chosen to avoid harmonics (no frequency is a multiple of another, the difference between any two frequencies does not equal any of the frequencies, and the sum of any two frequencies does not equal any of the frequencies). For additional information on DTMF, see the Telecommunications Industry Association’s web site at http://www.tiaonline.org/resources/other_links.cfm.

Command: AT+FCLASS=? <Enter> Display Service Class Capabilities Values: 0, 1 (other values are reserved) Default: 0 Result Codes: OK if the command is accepted; ERROR if the parameter value is out of range. Description: The +FCLASS=? command displays the set of Service Classes supported by the modem from the

list of values (e.g., 0,1 for a modem that supports data comm plus fax Service Class 1). This command returns the service class or classes available with the modem. The modem returns a list of all supported values, separated by commas if more than one class is supported. For example, a modem that supports data communications, Class 1 fax, Class 2 fax, and Voice mode functions would respond with "0,1, 2.0, 8".

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Command: +VNH=<hook><Enter> Automatic Hang-Up Control Values: 0, 1, 2, 3–255 Result Codes: OK if command accepted; ERROR if parameter out of range. Description: The +VNH command causes the modem to enable or disable automatic hang ups to a varying

degree when in Data mode or Fax mode, as shown below: +VNH=0 Enable automatic hang-ups as is normal in other non-Voice modes (such as

hanging up the phone when the modem does not detect a data carrier within a

given time interval). +VNH=1 Disable automatic hang-ups in other non-Voice modes +VNH=2 Disable automatic hang-ups in other non-Voice modes. The modem performs only

a "logical" hang up (i.e., returns the OK result code). +VNH=3-255 Reserved for future standards

Command: +FMI?<Enter> Report Manufacturer's ID Values: n/a Default: n/a Result Codes: Only unsolicited result codes (not the standard AT -type OK result code) Description: The + FMI? command causes the modem to report text consisting of a single line with the modem

manufacturer's name (e.g., Lucent Data/Fax/Voice), and our address, phone, and fax numbers.

Command: +FMM?<Enter> Report Product ID Result Codes: Only unsolicited result codes (not the standard AT -type OK result code) Description: The +FMM command causes the modem to report text consisting of a single line with the modem's

name (e.g., SocketModem).

Command: +FMR?<Enter> Report Version Level Result Codes: OK or ERROR Description: The +FMR command causes the modem to report the firmware version number and/or a date code

(e.g., Vs. 2.07 – 2/4/95).

Command: +FLO=<method><Enter> Select Flow Control Method Values: 0, 1, 2, 3–255Result Codes: OK, or ERROR Description: The +FLO? command lets you select the method of flow control provided and used by the modem.

If +FLO=0, some other method (such as credit flow control) is used. The Xon-Xoff method is required. Xon is the ASCII character <DC1> (11 hex). Xoff is the ASCII character >DC3> (13 hex). CCITT V.24 circuits 106 and 133 are optional flow control methods. If circuits 106 and 133 are not used (+FLO<>2), then circuit 106 is held On whenever +FCLASS=8. In Voice mode, circuit 105 has no effect on the state of transmitted data. (Circuit 133 normally reverts to use as circuit 105 (RTS) when not used for Flow Control.) +FLO=0 Disable Xon-Xoff and 133/105 flow control +FLO=1 Enable Xon-Xoff flow control in either direction +FLO=2 Enable CCITT Circuit 133 for flow control of the modem by the PC; use CCITT

Circuit 106 for flow control of the PC by the modem. +FLO=3-255 Reserved for future standards

Command: VIP Initialize Voice Parameters Values: 0 (optional) Description: The +VIP command causes the modem to initialize all Voice parameters to the factory default

settings. This command has the same effect as if the PC had issued commands for the individual parameter settings. The +VIP command has no effect on the +FCLASS setting. The optional command +VIP=0 <Enter> provides a selection of default profiles.

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Command: +VRX Enter Voice Receive State Values: 0, 1, 2–127, 128–255 Result Codes: Values (above) if the modem accepts the command; ERROR if the modem is not connected to an

off-hook Telco line, or one non-Telco input device.

Description: The +VRX command causes the modem to start the voice reception process. The modem starts

the process by returning the CONNECT result code to the PC. The modem then sends shielded voice data to the PC, in the format previously selected by the +VSM command.

The modem exits the voice/receive state by one of two means: a <DLE><I>, and an Inactivity Timer timeout. During the voice receive, the modem informs the PC of pertinent events, such as Presumed End of Message (Quiet), and Presumed Hang Up (Silence) detected, Busy detected, and Dial Tone detected, so that at the discretion of the PC, the PC may terminate the voice receive state. On termination of the voice receive state, the modem returns the OK result code, and then returns to the Voice Command state.

The Inactivity Timer is in effect during the receive operation. If the PC uses this timer and stops the modem from performing unwanted restarts, the PC must assure that there is data sent from the PC to the modem often enough to refresh the timer. The +VRX commands are as follows.

+VRX=0 Voice receive operation. This selection does not provide for modem periodical

tone production during a voice receive operation. The PC must issue the proper notifications of a record operation in progress by message playbacks to satisfy possible legal requirements.

+VRX=1 Voice receive operation. This selection does not provide for modem periodical

tone production during a voice-receive operation. The tone frequency and

cadence is manufacturer specific. +VRX=2–127 Reserved for future specification. +VRX=128–255 Manufacturer specific.

The result code values (0, 1, 2–127, 128–255) are returned if the modem accepts the command. The ERROR result code is returned if the modem is not connected to an off-hook Telco line, or one non-Telco input device.

Command: +VTS=<string> Produce DTMF and Tone Generation in Voice Mode Values: Refer to the IS-101 Spec. Default: Refer to the IS-101 Spec. Result Codes: Refer to the IS-101 Spec. Description: The +VTS command causes the modem to produce DTMF tones, single-frequency tones, and

optionally, double-frequency tones. This command allows the PC to generate a dial tone, busy, etc. for those modems capable of generating two arbitrary tones. The modem may perform tone detection during the playing of tones. When the modem receives the signal <DLE><!> to abort playing of the tones, the result code OK is displayed, and the modem returns to the voice command state.

Modem support for the second tone generation is optional. The modem produces compliant DTMF tones when processing DTMF tone production codes.

The tone generation string consists of elements in a list where each element is separated by commas. Each element can be:

1. A single ASCII character in the set of 0–9, #, *, and A–D

2. A string enclosed in square brackets [ ] , or

3. A string enclosed in curly braces { }

The modem interprets item 1 as a DTMF digit with duration set by the +VTD command. The modem interprets item 2 as a general dual tone and duration selection. The modem interprets item 3 as a DTMF tone with a different duration than that given by the +VTD command.

Missing parameters are assumed to be the default value. Unspecified values always default to 0 for frequencies, DTMF * for DTMF tones, and +VTD for duration. The omission of commas (and associated subparameters) is valid.

The quantity in the square brackets consists of a three-element list. The first element is the first frequency, the second element is the second frequency, and the third element is the duration, in

0.01second intervals. A list may contain null elements. For example, [3000] means that the modem generates a single tone at 3000 Hz for the default duration. [3000,3300] means that the modem

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generates a dual tone at 3000 and 3300 Hz for the default duration. [,3300] means that the modem generates a single tone at 3300 Hz for the default duration.

The quantity in the curly braces consists of a two-element list. The first element is the DTMF tone character, and the second element is the tone duration in 0.01 seconds. The DTMF tone characters are listed above. A list may contain null elements. For example, {@} means DTMF tone "2" for the default duration. {} means silence for the default duration.

The modem will stop the tone generation at the point in the string where the modem detects a parsing error, encounters an invalid frequency range, encounters a <CR>, or encounters a semicolon.

The modem returns the OK result code if the PC accepts the command. The ERROR result code is displayed if the modem encountered an error in parsing the subparameter, or if the selected frequency is out of range.

Example: Using the +VTS command for tone generation without using any null elements: AT=VTS=1,2,[1000,1300,50],{*6},{800,1300,50},9 The above string will perform as follows:

1. Play DTMF 1 with a duration given by the +VTD command.

2. Play DTMF 2 with a duration given by the +VTD command.

3. Play tone pair at 1000 Hz and 1300 Hz with a duration of 500 ms.

4. Play DTMF * with a duration of 60 ms.

5. Play tone pair at 800 Hz and 1300 Hz with a duration of 500 ms.

6. Play DTMF 9 with a duration given by the +VTD command. Refer to the IS-101 Spec for additional information.

Command: +VTS=? Report Frequency Support Result Codes: OK follows the string Description: The +VTS=? command reports the current frequency range in the form <freq1>,<freq2>,<dur> ,

where <freq1> is the first frequency range,<freq2> is the second frequency range, and<dur> is the duration range for the square brackets and curly braces constructs. The units are in 0.01 seconds. The range of valid <dur> values is that of the +VTD command.

Example: In the lines below, the modem responds to the +VTS=? command by reporting that it supports two frequencies, both in the range of 200-3300 Hz, and supports a duration range from 0 to 5 seconds. AT+VTS=?

(200-3300), (200-3300), (0-500) OK

Command: +VTX Start Voice Transmission Process Result Codes: OK on completion of transmission; CONNECT if the modem accepts the command; ERROR if the

modem is not connected to at least one off-hook Telco line, or one non-Telco device.

Description: The +VTX command causes the modem to start the voice transmission process. The PC sends the

data in the format of the previously entered +VSM command, using the flow control method selected by the +FLO command. The voice data is buffered to withstand gaps of missing data from the PC. If the modem does not have any current voice data, the modem sends silence over to the analog destination until the PC provides more voice data. The modem returns the OK result code and returns to Command mode after the modem has completely transmitted its buffer contents. The Inactivity Timer can be used to terminate the transmit data state, after which the modem returns to Command mode.

Command: +VGR=<gain> Set the Gain for Received Voice Samples Values: 0–255 Result Codes: OK if the modem accepts the command; ERROR if the parameter is out of range. Description: The +VGR= command causes the modem to set the gain for the received voice samples. Receive

gain values larger than 128 indicate a larger gain than nominal, and values smaller than 128 indicate a gain smaller than nominal. The modem may limit the receive gain to a narrower range, such as from 120 to 136, or from 120 to 128. The value 0 is reserved for modem automatic gain control (AGC).

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Command: +VGT=<level> Set the Volume for Transmitted Voice Samples Result Codes: OK if the modem accepts the command; ERROR if the parameter is out of range. Description: The +VGT= command causes the modem to set the volume control, either by attenuating or

amplifying the signal, for the transmitted voice samples. Values larger than 128 indicate a larger gain than nominal, and values smaller than 128 indicate a gain smaller than nominal. The modem may limit the receive gain to a narrower range, such as from 120 to 136, or from 120 to 128. The value 0 is reserved for modem automatic volume control (AVC).

Warning: The modem will limit the transmit level over the Telco lines, regardless of the current

+VGT setting, to that permitted by CFR FCC Rules Part 68 – Subpart D.

Command: +VIT=<timer> Set DTE/DCE Inactivity Timer Result Codes: OK if the modem accepts the command; ERROR if the parameter is out of range. Description: The +VIT command sets the modem's initial value for the PC/Modem Inactivity Timer. The

permitted range is displayed by the +VIT=? command. The units are in 1.0 seconds. The PC can disable the Inactivity Timer by using a value of 0 (+VIT=0).

The Inactivity Timer serves to ensure that the PC does not leave the modem in a state where it is not accessible by voice-unaware software. The Inactivity Timer is activated when the PC selects the voice fixed-rate. The timer expires if the flow of data from the PC to the modem stops (in both Voice Command mode and Data mode) for a specified amount of time.

When this timer expires, the modem switches to Data mode with autobauding. By switching to autobauding (and Data mode), the PC is allowed voice-unaware software to recover control of the modem in the event of catastrophic failure that does not result in a modem power down. It is recommended that the PC software leave the modem in autobauding (and Data mode), and use the Inactivity Timer only as needed. Leaving the modem in autobauding is an extra measure to prevent confusion from voice-unaware software accessing the modem in Voice mode at a fixed PC/modem interface rate. You can use the H command to switch to autobauding and Data mode automatically. In Voice mode, the modem does not allow the auto answer feature, since this feature does not allow the PC to set the modem in Voice mode before answering the phone.

Command: +VLS=<label> Select Analog Source/Destination Result Codes: OK if command accepted; ERROR if the <label> parameter is out of range or if the modem cannot

service the <label> parameter requested.

Description: The +VLS= command causes the modem to select one or more source and destination devices for

the analog data to be transmitted. The parameter <label> is used to identify each of the supported analog source/destination hardware devices. Codes, called "primitives", are provided to describe which voice I/O device(s) are components in a possible hardware configuration. The codes are grouped to help define and label 16 common hardware configurations. Each code, except "L" and "T" is followed by an ASCII 0 code (20 hex). Two codes can be concatenated to define a possible analog source/destination hardware configuration.

Code Description

L Local phone (no number code) T Telco line (no number code) M0 Internal microphone M1 External microphone S0 Internal speaker (requires squelch on any microphone activity) S1 External speaker (requires squelch on any microphone activity) H0 External microphone and speaker combination (handset or headset) Zn Manufacturer specific device (n>0) Mn Manufacturer specific extension (n>1) Sn Manufacturer specific extension (n>1) Hn Manufacturer specific extension (n>0)

The list below contains 16 commonly used hardware configurations, and the label and codes used to select each configuration.

<label> Code(s)

0 none Modem on-hook. Local phone connected to Telco. 1 T Modem off-hook, and connected to Telco. Local phone provided with power

2 L Modem off-hook. Local phone connected to modem.

Description

to detect hook condition.

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3 LT Modem off-hook. Local phone connected to Telco. Modem connected to

Telco.

4 S Internal speaker connected to the modem. Modem is on-hook. Local phone

connected to Telco.

5 ST Internal speaker connected to Telco. Modem is off-hook. Modem is

connected to Telco. Local phone provided with power to detect hook condition.

6 M Internal microphone connected to modem. Modem is on-hook. Local phone

connected to Telco.

7 MST Internal microphone and internal speaker connected to Telco. Squelching

active. Modem is off-hook, and connected to Telco. Local phone provided with power to detect hook condition.

8 S1 External speaker connected to modem. Modem is on-hook. Local phone

connected to Telco.

9 S1T External speaker connected to Telco. Modem is off-hook and connected to

Telco. Local phone provided with power to detect hook condition.

10 MS1T Internal microphone and external speaker connected to Telco. Squelching

active. Modem is off-hook, and connected to Telco. Local phone provided with power to detect hook condition.

11 M1 External microphone connected to modem. Modem is off-hook. Local phone

connected to Telco.

12 M1ST External microphone and internal speaker connected to Telco. Squelching

active. Modem is off-hook, and connected to Telco. Local phone provided with power to detect hook condition.

13 M1S1T External microphone and external speaker connected to Telco. Squelching

active. Modem is off-hook, and connected to Telco. Local phone provided with power to detect hook condition.

14 H External microphone and speaker combination (handset or headset)

connected to modem. Modem is off-hook. Local phone connected to Telco.

15 HT External microphone and speaker combination (headset or handset)

connected to modem. Modem is off hook, and connected to Telco. Local phone provided with power to detect hook condition.

Command: +VLS=? Identify Analog Source/Destination Configuration and

Event Reporting Capabilities

Result Codes: <label>,<devices>,trasmit event>,<receive event>,<idle event> Description: The +VLS=? command displays the modem's current source and destination device information for

the analog data to be transmitted. Refer to the +VLS= <label> command for label code and description information. Note that the +VEM command contains more information about event reporting. Example: In the lines below, the modem reports that it supports only a Telco line at Service Level C. AT+VLS=?

0,"",0A0001000,0E601800,1A803840 1, "T", 0A0001000,0E601800,1A803840 OK

Command: +VRA=<interval> Set Ring Back Goes Away Timer Values: 0–50 (in 0.10 second increments) Default: 50 Result Codes: OK if the modem accepts the command; ERROR if the <interval> parameter entered is out of

range.

Description: The +VRA= command sets the amount of time the modem will wait between Ringbacks before the

modem can assume that the remote device has gone off-hook. This command does not effect the Quiet Answer @ dial modifier; the +VRA command functions the same as the @ entered at the end of a dial string. Entering +VRA=0 forces the modem to return the OK result code immediately after the first Ring Back. The parameter <interval> refers to the silence interval length between the end of one ring interval and the start of the next ring interval.

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Command: +VRN=<interval> Set Ring Back Never Appeared Timer Values: 0–10 (in 1.0 second increments) Default: 10 Result Codes: OK if modem accepts the command; ERROR if the <interval> parameter entered is out of range. Description: The +VRN= command sets the amount of time that the modem will wait for Ring Back. If the

modem does not detect a Ring Back within the time period <interval>, the modem assumes that the remote device has gone off hook, and returns the OK result code. The modem only uses this command in call origination transactions. A +VRN= setting greater than the S-Register S7 setting means that only the S7 timer is in effect. Entering +VRA=0 forces the modem to return the OK result code immediately after dialing

Command: +VSD=<sds>,<sdi> Set Silence Detection Sensitivity Values: 0–256 (in 0.1 second intervals) Result Codes: OK if modem accepts the command; ERROR if one or more of the following apply: 1) the <sds> or

<sdi> parameter entered is out of range, or 2) either of the two parameters is missing from the command string. If an error occurs, modem retains the previous <sds> and <sdi> parameter values.

Description: The +VSD= command sets the silence detection sensitivity and the required period of silence

before the modem reports silence detected at the end of a voice receive, either with the Presumed End of Message (Quiet) or Presumed Hang Up (Silence) event reports. The table below outlines the possible combinations of the +VSD and +VSM commands using the <sds> parameter. An <sdi> parameter value of 0 means that long-term silence detection is disabled. (Note that longterm silence detection refers to the use of this function to detect the end of a voice receive (i.e., the user stops talking).

+VSD sds> +VSM Silence Compression in Use +VSM Silence Compression Not Used

0 Use +VSM silence compression

setting and algorithm for long-term silence detection.

not 0 Sets long-term silence detection setting independent of presence or use of silence

detection, where: <sds> = 128; nominal level of silence detection sensitivity <sds> > 128; more aggressive level of silence detection sensitivity (less

sensitive, higher noise levels considered to be silence).

<sds> < 128; less aggressive level of silence detection sensitivity (more

sensitive, lower noise levels considered to be silence).

The parameter <sds> is used by the PC to select greater amounts of modem silence detection activity; larger values imply that the PC wants the modem to treat noisier conditions as silence. The value entered for <sds> has no actual unit of measure. The modem may limit silence detection sensitivity to a more narrow range (e.g., from 120 to 136). A setting of 0 has no meaning.

The parameter <sdi> sets the required period of silence before the modem can report silence detected either with the Presumed End of Message (Quiet) or Presumed Hang Up (Silence) event reports. A value of 0 disables modem silence detection, in which case the modem will not report the Presumed End of Message (Quiet) or Presumed Hang Up (Silence) event reports.

Use default long-term setting silence detection level and algorithm,

Command +VSM=<cml>,<vsr>,<scs>,<sel> Select Voice Compression Method Values: (see individual parameter descriptions) Default: (see individual parameter descriptions) Result Codes: OK if the modem accepts the command; ERROR if one or more of the following apply: 1) the any

parameter entered is out of range, or 2) any of the four parameters are missing from the command string. If an error occurs, the modem retains the previous <sds> and <sdi> parameter values.

Description: The +VSM= command sets the modem to a specified voice compression method, silence

compression sensitivity, and voice sampling rate. The modem can maintain a different event detection capability for each compression method. This command allows the PC to set the amount of silence compression appropriate to a particular situation or application. For example, you may want to record your welcome message with the lowest amount of silence removal, with the goal of reducing distortion, meanwhile recording other messages with a more assertive silence removal, to limit disk space used for recording purposes.

The parameter meanings are described below.

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<cml> is used by the PC to select a compression method. The valid range of values is from 128–

256. The range of values from 0–127 is reserved for future standards. <vsr> is used to select the modem voice sampling rate from the set of those supported. The unit of

measure is samples per second. See the +VSM=? command for the list of sampling rates supported by the modem.

<scs> has different meanings in voice transmit and voice receive modes. In receive, the PC uses <scs> to select greater amounts of compression activity; larger <scs> values mean that the PC wants the modem to treat noisier conditions as silence. There is no unit of measure for this parameter; it merely represents a number in a range. 0 disables modem silence compression.

In voice transmit mode, the PC signals the modem that the data stream was recorded with silence compression by selecting a non-zero value from within the valid range (the same value as receive). Unpredictable results can occur if you 1) enable silence compression for transmitting a voice data stream that was not recorded with silence compression enabled, or 2) you disable silence compression for transmitting a voice data stream that was recorded with silence compression enabled. You can modify the silence expansion with the <sel> parameter. The range of valid values is 0–255. The modem may limit silence compression sensitivity to a narrower range (e.g., 120–128). A setting of <scs>=0 disables silence compression.

<sel> is used to modify the amount of silence expansion. This parameter represents the minimum amount of silence that the modem will expand a period of silence that was previously deleted with a non-zero <sel> parameter. A setting of <sel>=0 means the modem will not modify the silence expansion. The valid range of values is ____ - ____ in 0.1second increments. The modem ignores the <sel> parameter if the <scs> parameter is 0 (silence compression disabled).

Command: +VSM=? Report Voice Compression Method Result Codes: OK Description: The +VSM=? command reports several compression method identifiers in one of two ways: either

1) a compression method (for PCM coding) from the table below, or 2) a co-operative identifier (non-PCM coding) used with other manufacturer's equipment. Example: The following shows an inquiry about the modem support of compression and other data. In this example, the modem reports that it supports two compression methods. AT+VSM=?

128,"SIGNED PCM",12,0,(7200-8000,11025),(127-129),(0-50) 132,"ADPCM/AQ",2,40,(7200),(128),(0-50)

The compression method identifiers for PCM coding display the general classification of the compression method in the form <cmid>. Non-PCM coding reports the compression method identifiers in the form <cmid>/<author>, where <cmid> is the general classification of the compression method and <author> is the source of the method. The source <author> may be a proprietary method or it may reference a published standard. Each field limit is 20 characters. The +VXT command starts a translation to or from a particular manufacturer's proprietary voice data stream format to an unsigned (non-PCM) format.

Identifier Description

Signed PCM Linear PCM sampling using twos complement signed numbers Unsigned PCM Linear PCM sampling using unsigned numbers A-Log/Author Compression using a-law U-Log/Author Compression using u-law DPCM/Author Differential Pulse Coded Modulation DPCMAQ/Author Differential Pulse Coded Modulation with Adaptive Quantizier ADPCM/Author Adaptive Differential Pulse Coded Modulation VSELP/Author Vector Sum Exited Linear Predictor RELP/Author Residual Exited Linear Predictor CELP/Author Code Book Exited Linear Predictor CVSD/Author Continuously Variable Slope Delta Modulation TDHS/Author Time Domain Harmonic Distortion ADM/Author Adaptive Delta Modulation DM/Author Delta Modulation APC/Author Adaptive Predictive Coding ATC/Author Adaptive Transform Coding SBC/Author Sub-Band Coding GSM/Author Regular Pulse Exitation Long-term Predictor (RPELTP) LPC/Author Linear Predictive Coding EAPDPCM/Author Embedded Bit ADPCM

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MP-LPC/Author Multi-pulse LPC LSLTCQ Least Squares Lattice Trellis Coded Quantization

IS-101 does not make any provisions for standard compression modifiers.

Command: +VTD=<dur> Select Default Beep Tone Duration Timer (DTMF/Tone

Generation Duration)

Result Codes: OK if the modem accepts the command; ERROR if the parameter is out of range. Description: The +VTD= command causes the modem to set the default DTMF/tone generation duration used

with the +VTS command. This command does not affect the ATD command settings. The <dur> parameter range is given by the +VTD=? command, in units of 0.01 seconds. A setting of +VTD=0 specifies a manufacturer-specific time interval.

Command: +VDR=<enable>,<report> Enable/Disable Distinctive Ring (Ring Cadence Reporting) Values: See the Description Result Codes: OK if the modem accepts the command; ERROR if the parameter is out of range. Description: The +VDR command causes the modem to enable or disable reporting of the ring cadence

information, and to control the timing of the Ring event code report if ring cadence reporting is enabled. This report format is one line per silence period, and one line per ring period. The length of the silence period is in the form DROF=<number in units of 0.1 seconds><CR><LF>, and the length of the ring in the form DRON=<number in units of 0.1 seconds>. The <LR> character is optional. The modem may produce a Ring event code after the DRON message if enabled by the <report> parameter. The <report> parameter should be set to a value larger than the expected off-times within a single pattern so that the Ring event reports are issued only during the off-times between the complex patterns.

0 n/a The modem will not generate ring cadence reports. Other call progress

1 0 The modem only produces DROF and DRON messages. Other call

1 non-zero The modem only produces DROF and DRON messages. The RING result

2–255 non-zero Reserved for future standards. Example: The lines below shows a cadence with an off time of 4.0 seconds, an on time of 0.8

seconds, an off time of 0.4 seconds, and an on time of 0.8 seconds. The RING result code is displayed 0.5 seconds after the last DRON message. The command to enable this sample sequence is +VDR-1,5 , as shown below:

Description

event codes (including Ring) are reported as normal.

progress result codes (including RING) are reported as normal.

code is displayed after the falling edge of the ring pulse (i.e., after the DRON report).

Command: +VDT=<enable>,<report> Control Tone Cadence Reporting Result Codes: OK if the modem accepts the command; ERROR if the parameter is out of range. Description: The +VDT command causes the modem to enable or disable reporting of the control tone cadence

information in the frequency band used by the Ring Back/Remote Ring, Busy, and Reorder/Fast Busy tones (usually in the 300 - 600 Hz range). This reporting is subject to the tone detection restrictions reported by the +VLS=? command.

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The report format is one line per silence period, and one line per ring period. The length of the silence period is in the form CPOF=<number in units of 0.1 seconds><CR><LF>, and the length of the ring period is in the form CPON=<number in units of 0.1 seconds>. The <LR> character is optional.

Warning: The +VEM command can disable the reporting of this command regardless of the

current setting of the +VDT= command.

0 n/a The modem will not generate control tone cadence reports. Control tone

1 0 The modem only produces DROF and DRON messages. The modem will

1 non-zero (for future implementation) 2-255 non-zero Reserved for future standards.

Example: The lines below shows control tone cadence reporting enabled, with an on tone of 2.0 seconds and an off time of 4.0 seconds. The command used to enable the sample sequence is +VDT=1. Note the absence of the Ring Back/Remote Ring, Busy, and Reorder/Fast Tone event reports.

CPOF=40 CPON=20 CPOF=40 CPON=20 CPOF=40 CPON=20

Command: +VEM=<mask> Event Reporting and Masking Values: bits 0–32 on (i.e., FFFFFFFF8) Result Codes: OK if the modem accepts this command; ERROR if the bit field contains illegal characters. Description: The +VEM= command can be used to disable an event report, regardless of the modem's state, or

of the modem's analog signal source or destination's configuration. The <mask> parameter is a bit field where bit 0 is the most significant bit of an eight-digit hex number. The PC setting of a bit enable event reporting for that event. Bit 0 in the bit field corresponds to Event number 0 (Caller ID) (see Features Matrix for models that support Caller ID). This mask effects the reporting of the specified event in all modes (Fax, On-line data, AT Command and Voice modes). Events cannot be masked by modes; however, the PC can change the mask each time it changes modes. The modem-detectable events depend on the compression method selected by the +VSM command. The +VEM command may effect the reporting capabilities of other +V commands. The detection of an event may not be possible at all times and for all compression methods. Use the +VLS=? command to ask which times and for which compression methods (as well as for which analog source/destination selections) events can be detected and reported when not disabled by the +VEM command.

Example: In the lines below, only the RING and the DTMF event detection reporting: AT+VEM=18000000

Description

event codes are reported as normal.

not report any Ring Back/Remote Ring, Busy, and Reorder/Fast Busy tones event codes. Other control tone event codes are reported as normal.

Command: +VEM=? Report Event Reporting and Masking Capabilities Description: The +VEM=? command returns four lines of modem event reporting/masking capability information,

followed by the OK result code. The first line indicates the Service Level supported by the modem (though the modem may support more than the capabilities displayed). The next three lines report the capability of the Voice Transmit mode, Voice Receive mode, and the Voice Command mode, respectively. Each line is a hex value that is the bit-wise OR function across all of the supported compression methods and across all analog source/destination hardware configurations (i.e., all +VLS settings) for the specified mode. Note that the displayed hex values are not connected to the <mask> parameter in the +VEM and +VEM? commands.

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Interface Configuration Commands

The commands in this section are used to define the interface between the PC and the modem.

Command: +VBT=<deassert>,<assert> Set Modem Flow Control Assert and Deassert Points Values: <assert> and <deassert> are buffer offsets from the start of the buffer. The buffer's first position is

0. The offset units are octets.

Result Codes: OK if the modem accepts the command; ERROR if either the <assert> or <deassert> parameter is

greater than the buffer size, or if the <de-assert> parameter is greater than or equal to the <assert> value.

Description: The +VBT= command is used to set the flow control assert and deassert points inside the modem's

internal transmit buffer. As data is sent from the PC to the modem and is stored in the modem's buffer, when the number of octets in the buffer equals the <assert> value, the modem asserts flow control to the PC (e.g., turns off CTS circuits, or sends an XOFF character). As the modem removes data from the buffer and processes the data, when the number of octets in the buffer equals the <deassert> value, the modem de-asserts flow control (e.g., turns on CTS circuits, or sends an XON character). The modem may inform the PC (using the +VBT=? command) that the PC does not permit the modifying of the flow control assert and deassert points by returning a single value, not in the range of values, for each control point.

The +VBT= command controls the amount of "skid" in the modem's voice buffer, where "skid" is the amount of octets that the modem could accept before losing data after the modem asserts an off flow control signal to the PC.

You can use the +VBT= command to balance performance versus robustness. For example, if the PC knows there are only 16450 UARTs present, a small "skid" is probably sufficient. If there are 16550 UARTs present, a larger "skid" is probably required.

Command: +VBT=? Report Modem Flow Control Assert and Deassert Points Description: The +VBT=? command displays the possible <assert> and <deassert> values set by the +VBT=

command, followed by the OK result code.

Example: In the lines below, the +VBT=? command is used to ask about the modem's flow control and buffer

size ranges. The modem reports the deassert point is adjustable between 20 and 100 octets, the assert point is adjustable between 150 and 180 octets, and the transmit buffer size is 200 octets. AT+VBT=?

(20-100) , (150-180) , (200 OK

Command: +VPP=<enable> Enable or Disable Voice Mode Packet Protocol Values: 0, 1; (2–255 reserved for future standards) Result Codes: OK if the modem accepts the command; ERROR if the <enable> value is out of range. Description: The +VPP= command enables and disables the Packet protocol for Voice mode operation, and

handles the new unsolicited Voice mode result codes. The Packet protocol is used to detect lost octets on the modem-to-PC serial link, and to recover the lost octets by requesting retransmission. The Packet protocol assumes that the data corruption is not a problem on the communications link, the last octet sent will never be lost due to data overrun (i.e., that the newer octets always overwrite previous octets in the communications input buffer, a common UART design feature).

Several PC processes can cause serial input channel neglect for longer than the Protocol time between asynchronous characters (typically less than 521 microseconds), and data loss can occur. If a character is lost in the received data, the playback of the voice data may be impaired or lost. If a character is lost in the final result code, the connection may fail. The Packet protocol permits recovery from such data loss.

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Command: +VPR=<rate> Select DTE/DCE Interface Rate (Turn Off Autobaud) Values: 0, 1, 2, 3, 4, 5, 6, 7, 8 Result Codes: OK if the modem accepts the command; ERROR if the <rate> value is out of range. Description: The +VPR= command causes the modem to select between various fixed modem-to-PC interface

rates and autobauding. The selected fixed interface rate stays in effect until the modem selects another interface rate or autobauding, or until the modem returns to autobauding on the expiration of the Inactivity Timer. The newly selected rate takes effect after the modem returns the OK result code. +VPR=0 select autobauding +VPR=1 select 2400 bps +VPR=2 select 4800 bps +VPR=3 select 7200 bps +VPR=4 select 9600 bps +VPR=5 select 12000 bps +VPR=6 select 14400 bps +VPR=7 select 16800 bps +VPR=8 select 19200 bps If the modem claims support for autobauding (+VPR=0), it means that the modem can accept AT commands at 2400 bps at all times while in Voice command mode and with +VPR=0.

Flow Control

XON/XOFF flow control is used by the SocketModem to match the PC-to-modem data rate to the line-signaling rate, as well as to the requirements of analog conversion of the voice signals and voice data.

In-band, uni-directional XON/XOFF flow control is mandatory. RTS/CTS (V.24 circuits 106 and 133) flow control is optional per the IS-101 standard.

Voice Mode Result Codes

In Voice mode, the modem can detect and report DTMF, detect call progress tone and cadence events, evaluate voice quality, and can monitor telco-related activities. Events can be reported as a single character (Simple or "Terse" reporting), a full-text message (Message or "Verbose" reporting), or as a repeating pattern (Pattern reporting).

Terse Verbose

0 Caller ID Report 1 DID Report 2 Distinctive Ringing 3 RING 4 DTMF Received 5 Receive Buffer Overrun 6 Facsimile Calling (e.g., 1100 Hz) 7 Data Calling (e.g., 1300 Hz) 8 Local Phone On/Off Hook 9 Presumed Hang Up (SILENCE) Time-out 10 Presumed End of Message (QUIET) Time-out 11 SIT Tone (CO Standard Information Tones, sent to pay phones) 12 Bong Tone (Calling Card Tone) 13 Loop Current Interruption 14 Loop Current Polarity Reversal 15* Call Waiting Beep/Interrupt* 16* Distinctive Call Waiting* 17* TDD Detected (e.g., 1400/1800 Hz)* 18 Ring Back/Remote Ring 19 BUSY 20 DIALTONE 21 Reorder/Fast Busy 22 V.21 Channel 2 7E Flags 23 Transmit Buffer Under Run 24 Extension Phone On/Off Hook 25 Facsimile or Data Answer (e.g., 2100 Hz) 26 Data Answer (e.g., 2225 Hz) 27 Voice Detect 28 Call Waiting Plus Caller ID

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29 Stuttered Dial Tone 30 Invalid Voice Data Format 31 Lost Data Detected Event 32 Facsimile Answer 33-63 Reserved for future standard

above 63 Manufacturer specific _____ * Further study required for final specification. The TIA/EIA-602 CONNECT result code is disallowed in voice mode.

Unsolicited Voice Mode Result Codes

The form of the unsolicited result codes for voice mode is different from standard modem Command mode result codes. The +V specification refers to these voice mode result codes as "event detection reports". Event detection reports are provided in simple report format when one character is enough to report an event, such as RING. A complex report format is used when one character is not enough to report an event; generally, all multicharacter responses. Complex event reports are in the format <tag> <=> <data> <cr>, where <tag> is the data type, = is the ASCII = sign, <data> is a specific data instance, and <cr> is ASCII 13 decimal.

Valid Complex Event Report Tags

Tag Description

TIME Caller ID Tag in the form TIME=HHMM, where HH is the hour (00-23) and MM is the minute (00–

59). All numbers are in ASCII and numbers less than 10 have a leading 0.

DATE The current date in the format MMDD (where MM is the month 0–12 and DD is the day 01–31). All

numbers are in ASCII and numbers less than 10 have a leading 0.

NMBR The telephone number of the caller, in the format NMBR=<Number> or P or O (ASCII 4F hex). The

P indicates that the calling number information is not available since the originating caller has requested Private service. The O indicates that the calling number information is not available since the caller is outside of the area code.

NAME The caller's name in the format NAME=<Listing Name>. MESG Indicates a data item not listed above in Multiple Message Format: MESG=<Data Tag><Length of

Message><Data><Checksum> in printable ASCII (to avoid confusion with binary output).

ERRM Error Tag (used for Caller ID and other uses). Refer to the +VCID command. DRON Distinctive Ring Cadence On time DROF Distinctive Ring Cadence Off time CPON Control Tone Cadence On time CPOF Control Tone Cadence Off time CWON Call Waiting Cadence On time CWOF Call Waiting Cadence Off time ASTB See Voice Mode Shielded Codes SITT The data value for the SITT tag, in the format <SITT><=><data><cr>, where <data> can mean:

ICNT Intercept Tone VCCT Vacant Code Tone REOT Reorder Tone NCDT No Circuit Detected Tone TON4 Fourth SIT Tone Number TON5 Fifth SIT Tone Number TON6 Sixth SIT Tone Number TON7 Seventh SIT Tone Number

In the event of an unrecognized data tag, the SocketModem presents the data item information as printable hex ASCII numbers following the MESG tag. For example:

RING DATE=0321 TIME=1405 NMBR=5045551234 NAME=DOE JOE MESG=060342424231 RING RING

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Voice Mode Shielded Codes

These codes can be sent in either Command mode or Data mode. The DCE may return the event detection reports after the OK result code from the +FCLASS command. One or more simple event detection reports may be embedded within the data portion of a complex event detection report. Table 3 describes voice mode shielded codes. The number in the first column is the ASCII equivalent (in hex). Voice Mode Shielded Codes Detail

Shielded Code Hex

<DLE> (10) Two contiguous <DLE><DLE> codes indicate a single <DLE> in the data stream. <SUB> (1A) <DLE><DLE> in the data stream. <ETX> (3) End Data State; signifies the end of voice data. Can end with Event 9 (Presumed Hang

Q (51) Data stream shielded Xon character. Used in the +VXT command to shield XON

S (53) Data stream shielded Xoff character. Used in the +VXT command to shield XOFF

M (4D) Data stream shielded SOH code used for the Packet Protocol. W (57) Data stream shielded ETB code used for the Packet Protocol. F (46) Data stream shielded ACK code used for the Packet Protocol. U (55) Data stream shielded NAK code used for the Packet Protocol. G (47) Data stream shielded ENQ code used for the Packet Protocol. T (54) Timing Mark. X (58) Packet Header for the "Complex Event Detection Report" (additional event data

. (2E) Packet Terminator for the "Complex Event Detection Report" (additional event data

/ (2F) Start of DTMF tone shielding. ~ (7F) DTMF transitions to off. R (52) Event Number 3 (RING). The <DLE> shielded version of the RING result code. 1 (31) Event Number 4 (DTMF 1). 2 (32) Event Number 4 (DTMF 2). 3 (33) Event Number 4 (DTMF 3). 4 (34) Event Number 4 (DTMF 4). 5 (35) Event Number 4 (DTMF 5). 6 (36) Event Number 4 (DTMF 6). 7 (37) Event Number 4 (DTMF 7). 8 (38) Event Number 4 (DTMF 8). 9 (39) Event Number 4 (DTMF 9). 0 (30) Event Number 4 (DTMF 0). A (41) Event Number 4 (Extended Keypad DTMF A). B (42) Event Number 4 (Extended Keypad DTMF B). C (43) Event Number 4 (Extended Keypad DTMF C). D (44) Event Number 4 (Extended Keypad DTMF D). * (2A) Event Number 4 (Extended Keypad DTMF E). # (23) Event Number 4 (Extended Keypad DTMF E). o (6F) Event Number 5 (Receive Buffer Overrun). c (63) Event Number 6 (Facsimile Calling). e (65) Event Number 7 (Data Calling). h (68) Event Number 8 (line current break). Local phone goes on hook. H (48) Event Number 8 (line current detected). Local phone goes off hook. s (73) Event Number 9 (Presumed Hang Up " q (71) Event Number 10 (Presumed End of Message "QUIET" Timeout). J (4A) Event Number 11 (SIT Tone). $ (24) Event Number 12 (Bong Tone). I (6C) Event Number 13 (Loop Current Interruption). Usually indicates a remote hang up. L (4C) Event Number 14 (Loop Current Polarity Reversal). May indicate a hang up or a

w (77) Event Number 15 (Call Waiting/Beep Interrupt). t (74) Event Number 17 (TDD Detected - 1400/1800). r (72) Event Number 18 (Ring Back). b (62) Event Number 19 (BUSY). May be repeatedly sent.

Event Report Description

Up Timeout), Event 10 (Presumed End of Message), Event 13 (Loop Current Interruption), Event 14 (Loop Current Polarity Reversal), Event 19 (BUSY), or Event 20 (DIALTONE).

characters in the full-duplex data stream and in the Packet Protocol. (The +VXT command is not supported by the MT5634SMI-ITP.)

characters in the full-duplex data stream and in the Packet Protocol.

transfers to the DTE).

SILENCE" Timeout).

receive, depending on CO implementation.

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Chapter 6 – Voice Commands

d (64) Event Number 20 (DIALTONE). May be repeatedly sent. K (4B) Event Number 21 (Reorder/Fast Busy). F (46) Event Number 22 (V.21 Channel 2 7E flags). u (75) Event Number 23 (Transmit Buffer Under run). p (70) Event Number 24 (Line voltage increase - extension phone goes on hook). P (50) Event Number 24 (Line voltage increase - extension phone goes off hook). a (61) Event Number 25 (Facsimile or Data Answer. f (66) Event Number 26 (Data Answer). V (56) Event Number 27 (Voice Detection). A high confidence of voice. v (76) Event Number 27 (Voice Detection). A low confidence of voice. i (69) Event Number 29 (Stuttered Dial tone). E (45) Event Number 30 (Invalid Voice Data Format. Voice data is incompatible with selected

Voice Compression Methods. Y (59) Event Number 31 (Lost Data Detected Event). m (6d) Event Number 32 (Facsimile Answer). % (25) Event Number 63 (manufacturer specific). & (26) Event Number 48 (manufacturer specific). ' (27) Event Number 49 (manufacturer specific). ( (28) Event Number 50 (manufacturer specific). ) (29) Event Number 51 (manufacturer specific). all other 7-bit ASCII Reserved for future use.

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Chapter 6 – Voice Commands

Sample Sessions

This section provides voice mode Send/Receive handshaking examples.

Sample Rate Selection and Suggested Compression Method

Command Response

AT+VSM=? The PC inquires about the compression methods and bits-per-sample options.

The modem reports two compression methods:

1) PCM, twelve bits per sample, timing marks, sampling rates of 7200-8000 and 11025, three levels of silence compression sensitivity, and silence clip to 0.5 seconds;

2) The same as 1 above, but without silence compression; 3) ADPCM, two bits per sample, timing marks, sampling rate of 7200, no silence compression, and no silence clip. 128, "SIGNED PCM", 12, 40, (7200-8000, 11025), (127-129), (0-50) 129, "SIGNED PCM", 12, 0, (7200-8000, 11025), (0), (0) 132, "ADPCM/AQ", 2, 40, (7200), (0), (0) OK

AT+VSM=128 The PC selects the first compression method with the intent of queuing the event

detection capabilities of the modem. OK The modem agrees. AT+VEM=? Checks the modem event detection capability for the first compression method. "C" The modem reports Service Level C.

0A000100 0E601800 1A803840 OK

AT+VSM=132 Selects the second compression method with the intent of querying the event detection

capabilities of the modem. OK The modem agrees. AT+VEM=? Checks the modem event detection capability for the second compression method. "B" The modem reports Service Level B.

0A000100 04600000 1A803040 OK

AT+VLS? The modem inquires about what analog source and destinations are available.

The modem reports that a microphone and speaker are available:

0, " ", 0A000100, 0E601800, 1A803840

1, " T", 0A000100, 0E601800, 1A803840

4, " S", 0A000100, 0E601800, 1A803840

6, " M", 0A000100, 0E601800, 1A803840

OK AT+VSD=? The modem inquires about what end-of-voice receive silence detection capabilities are

available. (127–129), (50–200) The modem reports that three levels of sensitivity and a time interval between 5.0 and

20.0 seconds.

Some time later, the PC wants to transmit or receive a voice message. The PC selects 1) the first compression method at 7200 sampling rate, enable silence compression with nominal silence sensitivity, and no silence clipping; 2) report all modem-supported event detection; 3) set end of receive silence detection at nominal silence sensitivity setting and for 5.0 seconds:

AT+VSM=128, 7200, 128, 0; +VEM=FFFFFFFF8; +VSD=128, 50 OK The modem agrees. AT+VSM=129, 7200, 0, 0 The PC changes its PC/modem interface rate to 38400 bps and selects a

compression method with the least sensitive setting, with the goal of playing a message with less distortion, and at 7200 samples per second. (Assume that the PC issued a +VSM=? command earlier.)

OK The modem agrees.

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Chapter 6 – Voice Commands

AT+VLS=4 The modem selects the speaker. The modem had earlier reported that a speaker was

available. OK The modem agrees. AT+VTX The PC selects the Voice Transmit mode. CONNECT The modem agrees. <Data> The PC delivers <DLE> shielded and silence compressed voice data across the

PC/modem interface. <DLE> <ETX> The PC indicates the end of the Voice data stream. OK The modem indicates it is in Voice Command mode. AT+VLS=0 The PC deselects all devices. OK The modem agrees.

The PC switches to Data mode, Command mode, and autobauding enabled:

AT+VIT=0; +VPR=0; +FCLASS=0 OK The modem agrees.

Answer Phone, Play Greeting Message, and Record Message Example

Command Response

AT+FCLASS=8; The DCE switches to Voice mode. The DTE selects a fixed AT+VIT=60; DTE-DCE interface rate. The DTE knows from the sample +VPR=16 rate selected earlier and the bits-per-sample that the DTE-DCE interface rate should be

38400 bps. The DTE-DCE Inactivity Timer starts with 60 seconds. OK DCE agrees (to the old DTE/DCE interface rate). AT+VSM=129, 7200, 0, 0 DTE changes its DTE/DCE rate to 38400 bps and selects a compression method

with the least sensitive setting, with the goal of recording a message with less distortion, and at 7200 samples per second. Assume that the DTE issued a +VSM=? command

earlier. OK The DCE agrees. AT+VSD=127, 20 DTE selects a silence detection period of 2 seconds. AT+VLS=0 DTE selects a silence detection period of 2 seconds with the least sensitive setting (for

detecting the end of voice recording). OK The DCE agrees. AT+VIT=0; The DTE selects the Data mode with autobauding, and disables +VPR=0; automatic DCE

answering. The DCE waits for a phone call. +FCLASS=0 (not necessarily in Data mode).

S0=0 OK The DCE agrees. RING At some time, a remote station calls. AT+FCLASS=8; The DCE switches to Voice mode. The DCE selects a fixed AT+VIT=60; DTE/DCE

Interface Rate. The DTE knows from the sample AT+VPR=16; rate selected earlier and

the bits per sample that the DTE/DCE Interface Rate should be 38400 baud. The

DTE/DCE Inactivity Timer starts with a value of 60 seconds. OK The DCE agrees (at the old DTE/DCE Interface Rate). AT+VLS=0 The DTE selects all devices. OK The DCE agrees. AT+VIT=0; The DTE selects Data mode/Command mode with

+VPR=0; autobauding, and disables automatic DCE answering. The +FCLASS=0; DCE waits for a

phone call (not necessarily in Data mode). S0=0

AT+FCLASS=8; The DCE switches to Voice mode. The DCE selects a fixed DTE/DCEAT+VIT=60; AT+VPR=16; Interface Rate. The DTE knows from the sample rate selected earlier and the bits per

sample that the DTE/DCE Interface Rate should be 38400 baud. The DTE/DCE Inactivity

Timer starts with a value of 60 seconds. OK The DCE agrees (at the old DTE/DCE Interface Rate). <DLE> <R> The DCE selects another ring (at 38400 bps).

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Chapter 6 – Voice Commands

AT+VLS=2 The DCE answers the phone. OK The DCE indicates that it is in Voice Command mode. AT+VTX The DTE selects Voice Transmit mode. CONNECT The DCE agrees. <Data> The DTE plays the welcome message. <DLE> <ETX> The DTE indicates the end of the data stream. OK The DCE indicates that it is in Voice Command mode. AT+VTS= {933, 0, 12} The DTE annotates the greeting message with a 1.2 sec. beep. OK The DCE is ready for another Voice command. AT+VSM=132, 7200, 0, 0 The DTE selects a low bit compression scheme to save disk space. OK The DCE agrees. AT+VRX The DTE selects the Voice Receive mode. CONNECT The DCE agrees. <Data> The DCE delivers <DLE> shielded and silence-compressed voice data across the

DTE/DCE interface. <DLE> <NUL> The DTE strokes the Inactivity Timer.

<DLE> </> The DCE reports the start of a possible DTMF tone. <DLE> <5> <DLE> <5> The DCE reports a DTMF 5 detection for 140 milliseconds (within a 70 millisecond

resolution). <DLE> <-> The DCE reports the end of the DTMF 5 detection. For this example, DTMF 5 means

"finish with the voice message, and switch to fax mode". <DLE> <!> The DTE wishes to end the record by sending an abort command. <DLE> <ETX> The DCE indicates the end of the Voice data stream, and returns to Voice Command

mode. AT+VNH=1 The DTE selects to disable automatic hang-ups while in Service Class 2 +VIT=0 (+FSK

command result codes in Telco on-hook). The DTE switches the +FCLASS=2 DCE to

Service Class 2 fax mode. OK The DCE agrees. ATA The DCE starts the fax receive process.

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Chapter 6 – Voice Commands

DTE/DCE Interface Rates

The table below indicates the anticipated modem-to-computer interface rates for both the 7.2 bits-persample rate

Projected DTE/DCE Interface Rates for 7.2/8K Hz Sample Rates

Bits per Sample Rate @ 7.2K Hz Rate @ 8K Hz Sample Rate

0.50 4800 9600 1 9600 19200 2 19200 19200 3 38400 38400 4 38400 57600 5 57600 57600 6 57600 115200 7 115200 115200 8 115200 115200 9 115200 115200 10 115200 115200 11 115200 115200 12 115200 Fast 13 Fast Fast

and the 8 bits-per-sample rate.

Projected DTE/DCE I/F Projected DTE/DCE I/F

Related Manuals

For information on Multi-Tech modem installation, AT commands, S-Registers, and testing; refer to the applicable user manual that came with your Multi-Tech modem. Multi-Tech manuals and other resources are on the Multi-Tech web page at http://www.multitech.com.

Fax AT Command documents are also posted on the Multi-Tech Web site.

For additional Multi-Tech information, contact:

http://www.multitech.com for News, Products, Solutions, Support, Documents and more.

email oemsales@multitech.com for email technical support.

Additional Information

Telecommunications Industry Association (TIA) - the TIA represents the telecommunications industry in association with the EIA. Contact the TIA at 2500 Wilson Boulevard Suite 300 Arlington, VA 22201

http://www.tiaonline.org

Global Engineering Documents manages a collection of more than one million documents from over 460 organizations worldwide:

http://global.ihs.com

Phone: 800-854-7179 Fax: 303-792-2192

The ITU is the leading publisher of telecommunication technology, regulatory and standard information, with over 4,000 titles in printed form, on CD-ROM and Online at

http://www.itu.int/publications/ .

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Chapter 7 – Fax Commands

Fax commands have been placed in two separate documents:

· Fax Commands Class 1 and Class 1.0 Developer’s Reference Guide

· Fax Commands Class 2, 2.0, and 2.1 Developer’s Reference Guide

These documents are available on the CD, on the Multi-Tech FTP site, and as part of a Fax Developer’s Kit.

Contact oemsales@multitech.com for more information.

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Chapter 8 – Remote Configuration and Country Code Configuration

Chapter 8 - Remote Configuration and

Country Code Configuration

Remote Configuration

Remote configuration is a network management tool that allows you to configure modems anywhere in your network from one location. With password-protected remote configuration, you can issue AT commands to a remote SocketModem for maintenance or troubleshooting as if you were on-site.

Basic Procedure

The following steps are valid regardless of whether the connection is established by the local or the remote MultiTech modem.

1. Establish a data connection with a remote SocketModem.

2. Send three remote configuration escape characters followed by AT and the setup password, and press

Enter. Example: %%%ATMTSMODEM. You have four tries to enter the correct password before being disconnected. If the password is correct, the remote modem responds with OK.

3. You can now send AT commands to configure the remote modem.

4. When you have finished configuring the remote modem, save the new configuration by typing AT&W0 and

pressing Enter.

5. Type ATO and press Enter to exit remote configuration. You can now break the connection in the normal

way.

Setup

Multi-Tech modems are shipped with a default setup password (MTSMODEM). Because anyone who has the User Guide knows the default setup password, you should change the password and possibly also the remote configuration escape character.

Changing the Setup Password

1. Open a data communications program such as HyperTerminal.

2. In the terminal window, type AT#SMTSMODEM (or AT#Syyyyyy if you have replaced the MTSMODEM

password with yyyyyy) and press Enter. The modem responds with OK if the setup password is correct and ERROR if it is wrong.

3. To change the password, type AT#S=yyyyyy, where yyyyyy stands for the password, and press Enter. The

password can include any keyboard character and can be up to eight characters long. The modem responds with OK.

4. The new password is saved automatically. You can now either enter more AT commands or exit the data

communications program. The next time you remotely configure the modem you must use the new setup password.

Caution: You can only change the setup password locally; you cannot do it remotely. Also, passwords are case sensitive. The next time you enter the password, it must be in the same case as you set it up.

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Chapter 8 – Remote Configuration and Country Code Configuration

Changing the Remote Escape Character

To further improve security, you can change a remote modem’s remote configuration escape character. The remote configuration escape character is stored in register S9. The factory default is 37, which is the ASCII code for the percent character (%). Setting S9 to 0 (zero) disables remote configuration entirely.

Caution: If you do this remotely, you won’t be able to change it back remotely!

1. Establish a remote configuration link with the remote modem as described in Basic Procedure.

Note: This command can be executed locally as well as remotely.

2. Type ATS9=n, where n is the ASCII code for the new remote configuration escape character, then press

Enter.

3. Save the new value by typing AT&W and pressing Enter.

4. Type ATO and press Enter to exit remote configuration.

Country Code Configuration

Different countries have different requirements for how modems must function. Therefore, before you use the modem, you must configure it to match the defaults of the country in which you are using it. You can use one of two configuration methods: Using the Global Wizard and Using AT Commands.

Using the Global Wizard Utility

The Global Wizard configuration utility is recommended for computers running Windows 95/98/ME/2000/NT 4.0/XP.

1. Insert the MT5634SMI system CD into the CD-ROM drive. The Autorun dialog box appears.

2. Click Initial Setup and Country Selection. The Global Wizard dialog box appears. Click Next.

3. View the Global Wizard as it searches for your modem and identifies it. Click Next.

4. Select the country in which the modem will be used, and then click Next.

5. Review your choice of country. If it is correct, click Next to configure the modem.

6. When Global Wizard announces that the parameters have been set, click Finish to exit.

Using AT Commands

If you are comfortable using AT commands, you can configure your modem using AT commands. You must enter these commands in your communication program’s terminal window.

To configure the modem for a specific country, execute the following AT commands:

Type AT%T19,0,nn (nn stands for country code). Press Enter. OK is displayed.

The changes to the country parameters are saved automatically.

To verify that the correct country has been configured, type ATI9. The country code is then displayed in decimal format. The following is an example of country, command and result codes.

Country AT Command Result Code

(Hexadecimal) (Decimal)

Euro/NAM* AT%T19,0,34 (default) 52 Japan AT%T19,0,10 16

For a complete listing see Appendix C.

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Chapter 9 – Firmware Upgrade Procedure

Chapter 9 – Firmware Upgrade

Procedure

Introduction

Flash Upgrade Firmware

Your modem is controlled by semi-permanent software, called firmware, which is stored in flash memory. Firmware is nonvolatile; that is, it remains stored in memory when the modem is turned off. However, either the manufacturer or the user can change the firmware as bugs are repaired or new features are added.

Multi-Tech System’s Flash Wizard utility can be used in a Windows operating system to update (flash) your modem’s firmware.

The Flash Wizard utility can be downloaded from Multi-Tech’s FTP site and is available on CD.

Multi-Tech’s Flash Programming Protocol

Also, included in this chapter is Multi-Tech’s Flash Programming Protocol. This information is provided exclusively for the users of Multi-Tech Systems, Inc. modems. Such users Multi-Tech Systems, Inc. modem owners have the right to use, modify, and incorporate this code into other products provided they include the Multi-Tech Systems, Inc. notice and the associated copyright notice with any such product.

The flash programming protocol is provided ”AS IS” without warranty.

Upgrade Overview

The upgrade (flash) procedure for the Windows operating system consists of the following steps:

1. Identify the modem’s model number and firmware version.

2. Identify the current version of the firmware.

3. Download the upgrade (.HEX) file for your modem.

4. Extract the firmware upgrade (.HEX) file.

5. Install the Flash Wizard.

6. Document your stored parameters.

7. Upgrade the modem’s firmware using the .HEX file and the Flash Wizard.

8. Restore your parameters.

Upgrade Steps

Step 1: Identify the Modem Firmware

You must know the model number and firmware version of your Multi-Tech modem to know whether you should update it.

1. Run your favorite terminal program. In Windows 95, Windows 98, Windows ME, Windows NT, or Windows

2000, you may use HyperTerminal.

2. In the program’s terminal window, type AT&F. Even if you cannot see the AT&F command on your screen,

be sure to type it completely, and then press Enter. The modem should respond OK.

3. After the modem responds OK, type ATi and press Enter. Record your results. The model number and

firmware version should appear similar to that shown below.

LT V.90 1.0 MT5634SMI Data/Fax Modem Version 4.18w (or above)

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Chapter 9 – Firmware Upgrade Procedure

Step 2: Identify the Current Version of the Firmware

Identify the current version of the firmware available for your modem on the Multi-Tech web site. If your modem already has the current firmware, there is no need to update it.

1. Using your favorite Web browser, go to Multi-Tech System’s support web page. Follow the links to the

modem firmware page.

2. Locate your modem model number.

3. Compare the firmware version number for your modem as found in Step 1: Identify the Modem Firmware, to

the latest firmware version as listed on the web site. If your modem is at the current version, it does not need to be updated.

4. If the current firmware version is greater than the firmware version number found in Step 1: Identify the

Modem Firmware, your modem has an older firmware version. Continue with the next step.

Step 3: Download the Upgrade File

At Multi-Tech’s Support web page, follow the links to the modem firmware page. Locate the entry for your modem model and click on the upgrade file name to begin downloading the file to a temporary folder on your hard drive.

Step 4: Install the Flash Wizard

Install the Flash Wizard upgrade utility from the temp file on your hard drive.

1. Click on the Flashwiz.exe file in your temp folder. The Welcome dialog box displays.

2. Before continuing with the firmware update, exit all Windows programs. Click Cancel to quit Setup if you

need to close other Windows programs. Close any programs that are running and restart the update Wizard. When you are ready to proceed, click Next> to continue.

3. The Choose Destination Location dialog box displays. You may click Browse and select another folder if

you do not want to use the default installation path. Remember the location of the destination folder; you’ll need to copy the firmware .Hex file to the same location before using the Flash Wizard to update your modem. Destination Folder Click Next>.

4. When the program finishes copying files to your computer, the Setup Complete dialog box displays

indicating that you must restart your computer before using the program.

5. Select Yes. Then Finish to restart your system.

Note: You must restart your computer to finish the Flash Wizard installation.

Step 5: Extract the Firmware Upgrade (.Hex) Files

1. When the system restarts, move the upgrade file (downloaded from the web site) to the Flash Wizard utility

directory on your computer’s hard drive.

· In Windows, double-click the self-extracting update file. The extracted files include the .HEX file used to update your modem.

Step 6: Document Your Stored Parameters

Before you flash your modem you should record the parameters that are currently stored in your modem so you can reprogram it after flashing.

1. Run your favorite terminal program.

2. In the program’s terminal window, type AT&V and press Enter to list your modem’s current parameters.

3. Record your parameters by saving the screens and sending them to your printer.

4. Close the terminal program.

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Chapter 9 – Firmware Upgrade Procedure

Step 7: Upgrade the Modem’s Firmware

CAUTION: If you are using Windows NT, you must disable Windows RAS and Microsoft Fax Service before

upgrading the modem’s firmware.

To disable RAS and your Fax service (Windows NT Only):

1. Click Start | Settings | Control Panel, then double-click Services. Select Remote Access Server and click

Startup. Select Manual as the Start Up Type and click OK.

2. If you are using a Fax service in NT, change its Start Up Type to Manual.

3. Restart your computer.

Using the Flash Wizard

1. Use Windows Explorer to copy the new .Hex file (which you downloaded from the Multi-Tech web site) to the

folder in which the Flash Wizard program was installed.

2. Click Start | Programs | Flash Wizard to start the firmware update process. The program begins by

identifying devices attached to your computer.

3. The Wizard displays a list of installed devices able to be flashed with the update. You may update more than

one device in a single procedure. Select the device(s) you’d like to update and click Next> to continue.

4. Next, the Firmware Update Wizard displays current firmware version information. The top portion of the

window provides port, version and country identification for the firmware currently installed on your device(s). The Hex File list box displays the firmware versions available for updating your modem.

a. If your modem’s firmware version number matches or is higher than the version number listed in

the Hex File list, click Cancel to end the update process.

b. If your modem’s firmware version number is lower than the firmware version shown in the Hex

File list, continue with the update process. Select the port for the device you are updating. Use the list box to select the latest .Hex file version number for your country and click Next>.

5. The Firmware Update Wizard displays a progress indicator and begins updating your device(s) with the new firmware version. When the Wizard finishes the update, the progress indicator status changes to Programming Complete. Click Next> to complete the update.

6. When the update completes, the Firmware Update Wizard displays indicating the device has been successfully updated. Click Finish> to close the Wizard.

7. You must restart your computer to make the firmware changes effective for your modem.

Note: If you are using Windows NT, be certain to enable RAS and your fax program when the operating system restarts.

Step 8: Restore Your Parameters

Your modem has been updated. You can now open your terminal program to reprogram your modem parameters or to confirm the update by typing ATi in a terminal window.

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Chapter 9 – Firmware Upgrade Procedure

Multi-Tech Systems, Inc. Flash Programming Protocol

Important:

When interacting with the boot code, it is possible to make the modem inoperable. Use extreme caution.

1. Programming the Modem

There are two ways to start flash programming a modem. It can be programmed

1. From “AT” mode

2. When the modem powers up.

Below is an example of how a modem is programmed.

DTE Modem Comments

AT*FS\r This effectively “restarts” the modem so that it enters the

boot code.

Handshake Sequence

M’s Many M’s are sent (10 milliseconds apart) at 19200 baud.

This is where the handshake starts if the modem is just powered up.

U U is sent at 19200 baud if M’s are received within 100

milliseconds of power up. If the M’s are not received within 100 milliseconds, then the modem starts up normally. If the AT*FS command is used, then you have 1 second (1000mS) to perform the handshake.

D Sent at 19200 baud.

M M if can receive at 9600/19200/38400/57600/115200 I|J|K|L|M I if modem will be programmed at 9600

J if modem will be programmed at 19200 K if modem will be programmed at 38400 L if modem will be programmed at 57600 M if modem will be programmed at 115200

\r\nOK\r\n Modem is ready to be programmed

Program Sequence: DTE Modem Comments

ATFLP\r Request to the modem to program

G Modem is ready for next program packet [Length High] High byte of data packet length [Length Low] Low byte of data packet length

Packet lengths can be up to 4096 bytes in size for most boot

code versions [Address High] High byte of program address [Address Middle] Middle byte of program address [Address Low] Low byte of program address

Addresses are 3 byte values with a range of 00000h-

FFFFFh [Data Bytes] These are the data bytes to be programmed at the address

specified above. They must be the same number of bytes

as specified above. [Checksum] This checksum is generated by exclusive ORing together all

of the Data Bytes (do not include the Length or Address

bytes in that calculation).

\nOK\r\n \nERROR\ r\n

…. …. ATFLEND\r This ends programming and restarts the modem.

If bytes are programmed and verified.

If verify fails or checksum is bad.

Retry the block 3 times on an ERROR.

More of the above sequence until all the data bytes have

been sent to the modem.

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Chapter 9 – Firmware Upgrade Procedure

2. Other Supported Boot Code Commands

2.1 ATI0 - returns 000

2.2 ATI1 - returns boot code version number M.mmn where

M = unique code for each different platform that has boot code mm = version number of boot code n = version letter of the boot code Examples: 2.05e, 2.12d

ATI4- Boot code date and time.

3. Other Programming Concerns

1. The values programmed into Addresses 0000h, 0001h and 0002h should always be forced to C3h 00 01 (i.e., JP 100h).

This is because the boot code starts at address 100h, while all normal modem code starts at 200h. By allowing 0000h to be programmed to a jump value other than 0100h, the boot code would be bypassed and no further upgrades could occur.

2. Addresses 0100h-01FFh through 70000h-7FFFFh should not be allowed to be programmed under normal circumstances, as this is the main body of the boot up code.

3. The packets sent to the modem must be presorted by address and aligned on 128 byte boundaries (i.e., each packet must start on an address that is a multiple of 128).

4. The packets should also be a minimum of 128 bytes with the non-programmed bytes set to the hex value of FF.

5. The packets sent to the modem must not span a 4K boundary (i.e., start the packet before it and go over the boundary in the middle of the packet).

6. The 10-millisecond delay between M’s at the beginning of the handshake is so that the modem can sync up to the start bit. If the M’s are sent one right after another, a data bit might be mistaken as a start bit.

7. Multi-Tech firmware files are in Intel Hex Format and must be read in and formatted into 128-4096 byte blocks before being sent to the modem.

Refer to the Intel Hex Format section below for information about the Intel Hex Format.

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Chapter 9 – Firmware Upgrade Procedure

Intel Hex Format

An Intel Format Hex File is a text file consisting of “records”, one per line, that start with a “:” character and include only digits 0-9 and letters A-F. There are three different record types: Extended Address Records, Data Records, and End of File Records.

Data records contain the actual data that is to be programmed into a device. The address contained in the data record needs to be combined with an extended address (by adding the extended address shifted four bits left to the data record address) to determine the actual programming address for the data. If no extended address record is before a given data record in the file, then the extended address value is assumed to be zero.

The record types are described below:

Data Record

Char Pos Field Type Value Description

1 Record Start “:”

2-3 Data Byte Count “NN” Maximum value is FF (which is 255 data bytes).

Typical is 20h which causes the hex record to fit in 80 columns.

4-7 Address “XXXX” Lower 16 bits of 20 bit address, most significant

byte first. This must be added to Extended Address left shifted four bits.

8-9 Record Type “00” Data Record

10+N Data Bytes “YY..YY” The data bytes in hex. Each byte is two

characters.

NN+1,2 Checksum “ZZ” Zero minus the two’s complement addition of all

data hex values.

NN+3,4 End of Line “\r\n” Carriage Return followed by a Line Feed

Example Data Record in Intel Format

:2000A0005BB66DDBB66CD8B060C183060D1B366DDBB66DDBB76FDFBF7EFDFBF6EDDBB66DD4

Extended Address Record

Char Pos Field Type Value Description

1 Record Start “:” 2-3 Data Byte Count “02” Always 2 bytes for this record type

4-7 Address “0000” Not used for this record type (must be zero)

8-9 Record Type “02” Extended Address Record

10-13 Extended Address “EEEE” Top 16 bits of 20 bit address, most significant

byte first

14-15 Checksum “ZZ” Zero minus the two’s complement addition of all

data hex values

16-17 End of Line “\r\n” Carriage Return followed by a Line Feed

Example Extended Address Record in Intel Format

:020000021000EC

End of File Record

Char Pos Field Type Value Description

1 Record Start “:”

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Chapter 9 – Firmware Upgrade Procedure

2-3 Data Byte Count “00” Always 2 bytes for this record type

4-7 Address “0000” Transfer Address (usually be zero)

8-9 Record Type “01” End of File Record

10-11 Checksum “ZZ” Zero minus the two’s complement addition of all

data hex values

12-13 End of Line “\r\n” Carriage Return followed by a Line Feed

Example End of File in Intel Format

:00000001FF

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Appendix A – Mechanical Details

Figure A–1. Serial Test/Demo Board

Appendix A – Mechanical Details

Serial Test/Demo Board Components

SocketModem Global MT5634SMI Developer’s Guide 76

Appendix A – Mechanical Details

5V / 3.3V Jumper – JP1

This JP1 Jumper provides for selection of either 5 volt or 3.3-volt operation.

Warning – Be sure to set the 5V/3.3V jumper to match the requirements of your SocketModem. If this jumper is

set incorrectly, damage to the SocketModem and/or the Test/Demo card could result.

Caution: Use only the provided Multi-Tech transformer with the Test/Demo board; use of any other power

source will void the warranty and will likely damage the Test/Demo board and SocketModem. The transformer connector is keyed to prevent improper connection to the Test/Demo board.

Serial Test/Demo Board Block Diagram

Figure A–2. Serial Test/Demo Board Block Diagram

Caution: Use only the provided Multi-Tech transformer with the Test/Demo board; use of any other power

source will void the warranty and will likely damage the Test/Demo board and SocketModem. The transformer connector is keyed to prevent improper connection to the Test/Demo board.

SocketModem Global MT5634SMI Developer’s Guide 77

Parallel Test/Demo Board Components

Figure A–4. Parallel Test/Demo Board

Appendix A – Mechanical Details

Interrupt (IRQ) Select Jumper – JP1

This JP1 Jumper is used to define the modem’s IRQ value by shorting a pair of pins together. The factory default setting is IRQ 4 (pins 15 and 16)

I/O Address/COM Port/ IRQ Select Jumpers – JP2 and JP3

Jumpers JP2 and JP3 are used to define the modem’s I/O Address, COM Port, and IRQ selections. The factory default setting is E, 3 (I/O Address. 3E8, COM Port 3, and IRQ 4).

Operating Voltage Select Jumper – JP4

The operating voltage factory default setting is 3.3V operation.

SocketModem Global MT5634SMI Developer’s Guide 78

Parallel Test/Demo Board Block Diagram

Appendix A – Mechanical Details

Speaker DS1

Volume Control

Modem Module

Figure A–4. Parallel Test/Demo Board Block Diagram

Address Decoding

Tip/Ring Fuse

ISA Bus

RJ-11 Connector

SocketModem Global MT5634SMI Developer’s Guide 79

Appendix B – Product Approvals, Design Considerations, Regulatory Information

Appendix B - Product Approvals,

Design Considerations, and

Regulatory Information

Safety and EMC Approvals

Safety

EN60950 EN55022 UL1950 FCC Part 15 IEC950 Canadian EMC AS/NZ3260 EN55024 CCIB (China) GB4943, GB9254 TS-001

Telecom Approvals

While this modem can be configured for specific country operation, doing so DOES NOT constitute country approval. This modem is not approved in or configured for operation in all countries. The following list is displays the country approvals as of February 1, 2002.

This information can be deemed reliable, but is not guaranteed. All information is subject to change. Contact your Multi-Tech Systems, Inc. sales representative or call the world headquarters at 800-328-9717.

EMC

Country Country

Argentina Russia Australia Singapore Austria Slovakia Belgium South Korea Brazil Spain Canada Sweden Chile Switzerland China Taiwan Cyprus Turkey Denmark United Kingdom Estonia United States Finland France Germany Greece Hong Kong Hungary Iceland Indonesia Ireland Italy Japan Liechtenstein Luxembourg Mexico Netherlands New Zealand Norway Philippines Poland Portugal

SocketModem Global MT5634SMI Developer’s Guide 80

Appendix B – Product Approvals, Design Considerations, Regulatory Information

Regulatory Design Considerations

This section discusses hardware considerations, PC board layout considerations, and Telecom labeling requirements.

Hardware Considerations

Disclaimer: Multi-Tech Systems makes no warranty claims for vendor product recommendations listed below. Other vendor products may or may not operate satisfactorily. Multi-Tech System’s recommended vendor products only indicate that the product has been tested in controlled conditions and were found to perform satisfactorily.

Figure B–1. Main Board Filtering

SocketModem Global MT5634SMI Developer’s Guide 81

Appendix B – Product Approvals, Design Considerations, Regulatory Information

EMC

Surface mount ferrites are used on T&R (Tip and Ring) to mitigate emission levels out the RJ-11 cable. 220pF capacitors are also used on T&R to reduce the common mode emissions that may be present in certain systems. The ferrite and capacitors also aid in reducing the effects of transients that may be present on the line.

Recommended Sidactor

Manufacturer – Teccor Electronics – Part # - P#3100SA Manufacturer – ST Microelectronics -- Part 1 – SMP100-270

Recommended Ferrite (SMT)

Manufacturer – Associated Component Technology (ACT) – Part # - YCB-1206 Manufacturer – Murata Erie – Part # - BLM31A601SPT

Recommended Ferrite (Thru-Hole)

Manufacturer – Associated Component Technology (ACT) – Part # - WB2-2.OT

Recommended Capacitor

Manufacturer – Murata Erie – Part # - GHM3045X7R221K-GC (Surface mount device) and

Part # - DE0807B221K-KH (Thru-hole device) Manufacturer – Ever Grace Electronic Industrials -- Part # - YP221K2EA7PS Note: The capacitors used on T&R must have a Y2 safety rating.

Telecom

The RJ-11 connector must meet FCC Part 68 requirements. Refer to FCC Part 68 section 68.500 subpart F for connector specifications. A self-healing fuse is used in series with line to help prevent damage to the DAA circuit. This fuse is needed for FCC Part 68 compliance.

Recommended Connector

Manufacturer – Stewart – Part # - SS-6446-NF-A431

Recommended Fuse

Manufacturer – RayChem –Part # - TR600-150, TS600-170, or TS600-200

Note: The fuse is also needed to meet UL1950 3 crosses.

Common Mode Choke

Manufacturer – TDK – Part # - ZJYS51R5 – 2PT

edition protection against over-voltage from power line

Safety

All creepages and clearances for the MT5634SMI have been designed to meet requirements of safety standards EN60950 and IEC950. The requirements are based on a working voltage of 250V. When the recommended DAA circuit interface is implemented in a third party design all creepage and clearance requirements must be strictly adhered to. The third party safety design must be evaluated by the appropriate national agency per the required specification.

User accessible areas: Based on where the third party design is to be marketed/sold or used, it may be necessary to provide an insulating cover over all TNV exposed areas. Consult with the recognized safety agency to determine the requirements.

Notice: Even if the recommended design considerations are followed, there are no guarantees that a particular system will comply with all the necessary regulatory requirements. It is imperative that specific designs be completely evaluated by a qualified/recognized agency.

Note: All safety notices must be added to any User Guide that you produce.

SocketModem Global MT5634SMI Developer’s Guide 82

Appendix B – Product Approvals, Design Considerations, Regulatory Information

5V Tolerant Inputs for 3.3V Modules

In order to drive the inputs of 3.3V modules from 5V logic, it is recommended to add a 1K series resistor to each of the inputs: TXD, RTS, DTR, and RESET.

SocketModem Global MT5634SMI Developer’s Guide 83

Appendix B – Product Approvals, Design Considerations, Regulatory Information

FCC Part 15 Regulation

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

 Reorient or relocate the receiving antenna.  Increase the separation between the equipment and receiver.  Plug the equipment into an outlet on a circuit different from that to which the receiver is connected.  Consult the dealer or an experienced radio/TV technician for help.

This device complies with Part 15 of the FCC rules. Operation of this device is subject to the following conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference that may cause undesired operation.

WARNING – Changes or modifications to this unit not expressly approved by the party responsible for

compliance could void the user’s authority to operate the equipment.

Industry Canada

This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numérique de la classe B respecte toutes les exigences du Reglement Canadien sur le matériel brouilleur.

SocketModem Global MT5634SMI Developer’s Guide 84

Appendix B – Product Approvals, Design Considerations, Regulatory Information

FCC Part 68 Telecom

1. This equipment complies with part 68 of the Federal Communications Commission Rules. On the outside

surface of this equipment is a label that contains, among other information, the FCC registration number. This information must be provided to the telephone company.

2. The suitable USOC jack (Universal Service Order Code connecting arrangement) for this equipment is

shown below. If applicable, the facility interface codes (FIC) and service order codes (SOC) are shown.

3. An FCC-compliant telephone cord and modular plug is provided with this equipment. This equipment is

designed to be connected to the telephone network or premises wiring using a compatible modular jack that is Part 68 compliant.

4. The ringer equivalence number (REN) is used to determine the number of devices that may be connected to

the telephone line. Excessive RENs on the telephone line may result in the device not ringing in response to an incoming call. In most, but not all, areas the sum of the RENs should not exceed 5.0. To be certain of the number of devices that may be connected to the line, as determined by the total RENs, contact the local telephone company.

5. If this equipment causes harm to the telephone network, the telephone company will notify you in advance

that temporary discontinuance of service may be required. But if advance notice is not practical, the telephone company will notify you as soon as possible. Also, you will be advised of your right to file a complaint with the FCC if you believe it is necessary.

6. The telephone company may make changes in its facilities, equipment, operations, or procedures that could

affect the operation of the equipment. If this happens, the telephone company will provide advance notice in order for you to make necessary modifications in order to maintain uninterrupted service.

7. If trouble is experienced with this equipment (the model of which is indicated below) please contact Multi-

Tech Systems, Inc. at the address shown below for details of how to have repairs made. If the trouble is causing harm to the telephone network, the telephone company may request you remove the equipment from the network until the problem is resolved.

8. No repairs are to be made by you. Repairs are to be made only by Multi-Tech Systems or its licensees.

Unauthorized repairs void registration and warranty.

9. This equipment should not be used on party lines or coin lines.

10. If so required, this equipment is hearing aid compatible.

Manufacturer: Multi-Tech Systems, Inc. Trade Name SocketModem Model Number: MT5634SMI FCC Registration No: AU7-USA-25814-M5-E Ringer Equivalence: 0.3B Modular Jack (USOC): RJ11C or RJ11W (single line) Service Center in USA: Multi-Tech Systems, Inc.

2205 Woodale Drive Mounds View, MN 55112 U.S.A. (763) 785-3500 (763) 785-9874 Fax

Telecom Labeling Requirements

FCC regulations require labeling of registered Telephone and Data Terminal Equipment in accordance with Part 68 Subpart D. There are two options available for labeling of the device containing the MT5634SMI SocketModem. The first option would be to use the registration number assigned to Multi-Tech Systems, Inc. by the FCC as explained in Section 68.300 below and shown in the sample label. The second option would be for the customer to submit applications for and use their own registration number that would be assigned by the FCC. This would require a letter of authorization for reregistration written by Multi-Tech Systems, Inc. giving the customer permission to reregister the product. The customer would also need to obtain and file the necessary documents and pay the required fees to the FCC.

Similarly, Industry Canada requires labeling in accordance with CS-03 requirements. An Industry Canada label should be attached to the final product as described in the Industry Canada CS-03 section below. A label can be purchased from Multi-Tech or a label printing company available to you. A Multiple Listing (similar to FCC’s reregistration) is also an option for Industry Canada labeling.

SocketModem Global MT5634SMI Developer’s Guide 85

Appendix B – Product Approvals, Design Considerations, Regulatory Information

From FCC PART 68 Subpart D – Conditions for Registration

Complete document available from US Government Printing Office:

http://www.access.gpo.gov/cgi-bin/cfrassemble.cgi?title=199847

Section 68.300 Labeling requirements. (a) Registered terminal equipment and registered protective circuitry shall have prominently displayed on an

outside surface the following information in the following format:

Complies With Part 68, FCC Rules

FCC Registration Number: _____________ Ringer Equivalence: ____

(b) Registered terminal equipment and registered protective circuitry shall also have the following identifying

information permanently affixed to it. (1) Grantee’s name. (2) Model number, as specified in the registration application. (3) Serial number or date of manufacture. (4) Country of origin of the equipment: “Made in __________.”

Required if the equipment is not manufactured in the United States. (Country of origin shall be determined in accordance with 19 U.S.C. 1304 and regulations promulgated thereunder.)

(5) As used herein, permanently affixed means that the required nameplate data is etched, engraved,

stamped, indelibly printed or otherwise permanently marked. Alternatively, the required information may be permanently marked on a nameplate of metal, plastic, or other material fastened to the enclosure by welding, riveting, or with a permanent adhesive. Such a nameplate must be able to last for the expected lifetime of the equipment and must not be readily detachable.

(6) When the device is so small or for such use that it is not practical to place the statements specified in this

section on it, the information required by paragraphs (a) and (b) of this section shall be placed in a prominent location in the instruction manual or pamphlet supplied to the user. The FCC Registration Number and the Model Number shall be displayed on the device.

Reregistration

(From Form 730 Application Guide Appendix C-2) http://www.fcc.gov/formpage.html Private label distributors may obtain a registration number in their own name. In this case, a reregistration filing

is made with the submission of Exhibit B, a copy of a letter from the original registrant to the applicant giving permission for the reregistration and a willingness to provide the applicant with any technical support. The applicant will replace the registration label on the original grantee with the one containing the newly assigned registration number.

SocketModem Global MT5634SMI Developer’s Guide 86

Appendix B – Product Approvals, Design Considerations, Regulatory Information

Fax Branding Statement

The Telephone Consumer Protection Act of 1991 makes it unlawful for any person to use a computer or other electronic device, including fax machines, to send any message unless such message clearly contains the following information:

 Date and time the message is sent  Identification of the business or other entity, or other individual sending the message  Telephone number of the sending machine or such business, other entity, or individual

This information is to appear in a margin at the top or bottom of each transmitted page or on the first page of the transmission. (Adding this information in the margin is referred to as fax branding.) Since any number of fax software packages can be used with this product, the user must refer to the fax software manual for setup details. Typically the fax branding information must be entered via the configuration menu of the software.

Canadian Limitations Notice

Notice: The ringer equivalence number (REN) assigned to each terminal device provides an indication of the maximum number of terminals allowed to be connected to a telephone interface. The termination on an interface may consist of any combination of devices subject only to the requirement that the sum of the ringer equivalence numbers of all the devices does not exceed 5.

Notice: The Industry Canada label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective, operational, and safety requirements. The Industry Canada label does not guarantee the equipment will operate to the user’s satisfaction.

Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of the local telecommunications company. The equipment must also be installed using an acceptable method of connection. The customer should be aware that compliance with the above conditions may not prevent degradation of service in some situations. Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by the supplier. Any repairs or alterations made by the user to this equipment or equipment malfunctions may give the telecommunications company cause to request the user to disconnect the equipment.

Users should ensure for their own protection that the electrical ground connections of the power utility, telephone lines and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas.

Caution: Users should not attempt to make such connections themselves, but should contact the appropriate

electric inspection authority, or electrician, as appropriate.

SocketModem Global MT5634SMI Developer’s Guide 87

Appendix B – Product Approvals, Design Considerations, Regulatory Information

Industry Canada CS-03

Canadian regulations require that certified equipment bear an identifying certification label, which is obtained from Industry Canada. The label provided must be displayed on the equipment according to Industry Canada specifications. http://spectrum.ic.gc.ca/~cert/

From Certification Procedure 01 (CP-01):

Certified equipment will bear an identifying certification label and the certificate holder will be responsible for permanently affixing this certification label. The certification label identifies certified equipment to the public, representatives of the telecommunications common carriers, the Department, and other interested parties. The label must be permanently affixed to the equipment.

Multiple Listing

This terminal device may be multiple listed to other distributors based upon the approval granted to the original certificate holder. In order to obtain a multiple listing certification, the following documentation must be presented to Industry Canada:

(a) The model number, Industry Canada certificate number and certification number of the approved equipment; (b) A letter from the original certificate holder authorizing the Department to use information on file to grant a

multiple listing certification. The name/model number, certificate number and certification number for the subject equipment must be shown. The letter must also declare that the model to be multiple listed is

identical in design and construction to the originally approved model; (c) A letter, from the proposed multiple listee, requesting the certification; (d) A Terminal Equipment Certification / Testing Application and Agreement form, completed by the proposed

multiple listee; (e) A drawing, sample or illustration of the product label; and (f) Payment in accordance with TRC-49 section on Multiple Listings.

International Modem Restrictions

Some dialing and answering defaults and restrictions may vary for international modems. Changing settings may cause a modem to become non-compliant with national telecom requirements in specific countries. Also note that some software packages may have features or lack restrictions that may cause the modem to become noncompliant.

EMC, Safety, and R&TTE Directive Compliance

The CE mark is affixed to this product to confirm compliance with the following European Community Directives:

· Council Directive 89/336/EEC of 3 May 1989 on the approximation of the laws of Member States relating to

electromagnetic compatibility;

and

· Council Directive 73/23/EEC of 19 February 1973 on the harmonization of the laws of Member States relating

to electrical equipment designed for use within certain voltage limits;

and

· Council Directive 1999/5/EC of 9 March on radio equipment and telecommunications terminal equipment and

the mutual recognition of their conformity.

SocketModem Global MT5634SMI Developer’s Guide 88

Appendix B – Product Approvals, Design Considerations, Regulatory Information

New Zealand Telecom Warning Notice

1. The grant of a Telepermit for any item of terminal equipment indicates only that Telecom has accepted that

the item complies with minimum conditions for connection to its network. It indicates no endorsement of the

product by Telecom, nor does it provide any sort of warranty. Above all, it provides no assurance that any

item will work correctly in all respects with another item of Telepermitted equipment of a different make or

model, nor does it imply that any product is compatible with all of Telecom’s network services.

This equipment is not capable under all operating conditions of correct operation at the higher speed which it

is designated. 33.6 kbps and 56 kbps connections are likely to be restricted to lower bit rates when

connected to some PSTN implementations. Telecom will accept no responsibility should difficulties arise in

such circumstances.

2. Immediately disconnect this equipment should it become physically damaged, and arrange for its disposal or

repair.

3. This modem shall not be used in any manner, which could constitute a nuisance to other Telecom

customers.

4. This device is equipped with pulse dialing, while the Telecom standard is DTMF tone dialing. There is no

guarantee that Telecom lines will always continue to support pulse dialing.

Use of pulse dialing, when this equipment is connected to the same line as other equipment, may give rise

to ‘bell tinkle’ or noise and may also cause a false answer condition. Should such problems occur, the user

should not contact the Telecom Faults Service.

The preferred method of dialing is to use DTMF tones, as this is faster than pulse (decadic) dialing and is

readily available on almost all New Zealand telephone exchanges.

5. Warning Notice: No ‘111’ or other calls can be made from this device during a mains power failure.

6. This equipment may not provide for the effective hand-over of a call to another device connected to the

same line.

7. Some parameters required for compliance with Telecom’s Telepermit requirements are dependent on the

equipment (PC) associated with this device. The associated equipment shall be set to operate within the

following limits for compliance with Telecom’s Specifications:

For repeat calls to the same number:

· There shall be no more than 10 call attempts to the same number within any 30-minute period for any single manual call initiation, and

· The equipment shall go on-hook for a period of not less than 30 seconds between the end of one attempt and the beginning of the next attempt.

For automatic calls to different numbers:

· The equipment shall be set to ensure that automatic calls to different numbers are spaced such that there is no less than 5 seconds between the end of one call attempt and the beginning of another.

· For automatically answered incoming calls:

· The equipment shall be set to ensure that calls are answered between 3 and 30 seconds of receipt

of ringing.

8. For correct operation, total of the RN’s of all devices connected to a single line at any time should not exceed 5.

South African Notice

This modem must be used in conjunction with an approved surge protection device.

SocketModem Global MT5634SMI Developer’s Guide 89

Appendix C – Country Configuration and Result Codes

Appendix C – Country Configuration

and Result Codes

This information is supplied to illustrate Multi-Tech’s country configurations. However, many of these countries are not approved at this point in time. See Appendix B or contact your Multi-Tech sales representative regarding the latest approvals.

Country Country Config. (hex) ATI9 Response

Afghanistan Albania Algeria American Samoa Andorra Angola Anguilla Antarctica Antigua & Barbuda Argentina at%t19,0,34 52 Armenia Aruba Australia at%t19,0,1 1 Austria at%t19,0,34 52 Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus

Belgium at%t19,0,34 52 Belize Benin Bermuda Bhutan Bolivia Bosnia & Herzegowina Botswana Bouvet Island

Brazil at%t19,0,34 52 British Indian Ocean Territory Brunei Darussalam Bulgaria Burkina Faso Burundi Cambodia Cameroon

Canada at%t19,0,34 52

Cape Verde

Cayman Islands

Central African Republic

Chad

Chile at%t19,0,34 52

China at%t19,0,34 52

Christmas Island

Cocos (Keeling) Islands

Colombia

Comoros

Congo

Cook Islands

Costa Rica

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

52 52 52 52 52 52 52 52 52

52 52

52 52 52 52 52 52

52 52 52 52 52 52 52 52

52 52 52 52 52 52 52

52 52 52 52

52 52 52 52 52 52 52

SocketModem Global MT5634SMI Developer’s Guide 90

Appendix C – Country Configuration and Result Codes

Country Country Config. (hex) ATI9 Response

Cote D'Ivoire

Croatia

Cuba

Cyprus

Czech Republic

Denmark at%t19,0,34 52

Djibouti

Dominica

Dominican Republic

East Timor

Ecuador

Egypt

El Salvador

Equatorial Guinea

Eritrea

Estonia

Ethiopia

Falkland Islands (Malvinas)

Faroe Islands

Fiji

Finland at%t19,0,34 52

France at%t19,0,34 52 France-Metropolitan French Guiana French Polynesia French Southern Territories Gabon Gambia Georgia

Germany at%t19,0,34 52 Ghana Gibraltar

Greece at%t19,0,34 52 Greenland Grenada Guadeloupe Guam Guatemala Guinea Guinea-Bissau Guyana Haiti Heard and Mc Donald Islands Honduras

Hong Kong at%t19,0,30 48

Hungary at%t19,0,30 48

Iceland at%t19,0,34 52

India at%t19,0,30 48

Indonesia at%t19,0,30 48

Iran

Iraq

Ireland at%t19,0,34 52

Israel at%t19,0,30 48

Italy at%t19,0,34 52

Jamaica at%t19,0,34 52

Japan at%t19,0,10 16 Jordan Kazakhstan Kenya Kiribati Korea-Democratic People's Republic of Korea-Republic of Kuwait Kyrgyzstan

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,25

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,30 at%t19,0,34 at%t19,0,34 at%t19,0,34

52 52 52 52 37

52 52 52 52 52 52 52 52 52 52 52 52 52 52

52 52 52 52 52 52 52

52 52

52 52 52 52 52 52 52 52 52 52 52

52 52

52 52 52 52 48 52 52 52

SocketModem Global MT5634SMI Developer’s Guide 91

Appendix C – Country Configuration and Result Codes

Country Country Config. (hex) ATI9 Response

Lao People's Democratic Republic Latvia Lebanon Lesotho Liberia Libyan Arab Jamahiriya Liechtenstein Lithuania

Luxembourg at%t19,0,34 52

Macau

Macedonian-Former Yugoslav Republic of

Madagascar

Malawi

Malaysia

Maldives

Mali

Malta

Marshall Islands

Martinique

Mauritania

Mauritius

Mayotte

Mexico at%t19,0,34 52

Micronesia (Federated States of)

Moldavia -Republic of

Monaco

Mongolia

Montserrat

Morocco

Mozambique

Myanmar

Namibia

Nauru

Nepal

Netherlands at%t19,0,34 52

Netherlands Antilles at%t19,0,34 52

New Caledonia at%t19,0,34 52

New Zealand at%t19,0,9 9

Nicaragua

Niger

Nigeria

Niue

Norfolk Island

Northern Mariana Islands

Norway at%t19,0,34 52 Oman Pakistan Palau Panama Papua New Guinea Paraguay Peru Philippines Pitcairn

Poland at%t19,0,30 48

Portugal at%t19,0,34 52 Puerto Rico Qatar Reunion Romania Russian Federation Rwanda St. Helena Saint Kitts and Nevis

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,30 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,30 at%t19,0,34

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

52 52 52 52 52 52 52 52

52 52 52 52 48 52 52 52 52 52 52 52 52

52 52 52 52 52 52 52 52 52 52 52

52 52 52 52 52 52

52 52 52 52 52 52 52 48 52

52 52 52 52 52 52 52 52

SocketModem Global MT5634SMI Developer’s Guide 92

Appendix C – Country Configuration and Result Codes

Country Country Config. (hex) ATI9 Response

Saint Lucia St. Pierre and Miquelon Saint Vincent and the Grenadines Samoa San Marino Sao Tome and Principe Saudi Arabia Senegal Seychelles

Sierra Leone

Singapore at%t19,0,30 48

Slovakia at%t19,0,34 52 Slovenia Solomon Islands Somalia South Africa South Georgia and the South Sandwich Islands

Spain at%t19,0,34 52 Sri Lanka Sudan Suriname Svalbard and Jan Mayen Islands Swaziland

Sweden at%t19,0,34 52

Switzerland at%t19,0,34 52 Syrian Arab Republic Taiwan-Province of China Tajikistan Tanzania-United Republic of Thailand Togo Tokelau Tonga Trinidad and Tobago Tunisia Turkey Turkmenistan Turks and Caicos Islands Tuvalu Uganda Ukraine United Arab Emirates

United Kingdom at%t19,0,34 52

United States at%t19,0,34 52 United States Minor Outlying Islands Uruguay Uzbekistan Vanuatu Vatican City State (Holy See) Venezuela Vietnam Virgin Islands (British) Virgin Islands (U.S.) Wallis and Futuna Islands Western Sahara Yemen Yugoslavia Zaire Zambia

Zimbabwe

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

at%t19,0,30 at%t19,0,34 at%t19,0,34 at%t19,0,35 at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,30 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34 at%t19,0,34

52 52 52 52 52 52 52 52 52 52

48 52 52 53 52 52

52 52 52 52 52

52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52

52 52 52 52 52 52 48 52 52 52 52 52 52 52 52 52

SocketModem Global MT5634SMI Developer’s Guide 93

Appendix D – SocketModem and the New SerialModule

SocketModem Global MT5634SMI Developer’s Guide 94

Index

56K operation

digital loss when used with PBX, 41

Abort timer, 40 Adaptive Answer Result Code Enable command, 31 Answer command, 25 Asynchronous Communications Mode command, 28 Asynchronous Word Length command, 32 AT Command Control command, 31 AT commands, 23

#CBA, 33, 38 #CBD, 33, 38 #CBF?, 33, 39 #CBFR, 33, 39 #CBI, 33, 39 #CBN=, 33, 39 #CBP, 33, 39 #CBR, 34, 39 #CBS, 34, 39 #P, 34, 39 #S, 34, 39, 67 #S=, 34, 39, 67 $D, 32 $EB, 32 $MB, 32 $RP, 32 $SB, 32 %A, 31 %B, 31 %C, 31 %DC, 31 %E, 31 %H, 31 %R, 31 %S, 32 &C, 27 &D, 28 &E, 28 &F, 28 &G, 28 &K, 28 &L, 28 &P, 28 &Q, 28 &S, 29 &T, 29 &V, 29 &W, 67, 68 &Y, 29 &Z=, 29 +++AT, 34 +FCLASS= <mode>, 46

Appendix D – SocketModem and the New SerialModule

+FCLASS=8, 47 +FLO=<method>, 48 +FMI?, 48 +FMM?, 48 +FMR?, 48 +MS?, 35 +MS=, 35 +MS=?, 35 +PCW=, 36 +PIG=, 36 +PMH=, 36 +PMHF, 37 +PMHR=, 37 +PMHT=, 37 +PQC=, 38 +VBT=, 57 +VBT=?, 57 +VCID=, 38 +VDR=, 55 +VDR=, 33, 38 +VDT=, 55 +VEM=, 56 +VEM=?, 56 +VGR=<gain>, 50 +VGT=<level>, 51 +VIT=<timer>, 51 +VLS=?, 52 +VLS=<label>, 51 +VNH=<hook>, 48 +VPP=, 57 +VPR=, 58 +VRA=<interval>, 52 +VRN=<interval>, 53 +VRX, 49 +VSD=<sds>,<sdi>, 53 +VSM=, 53 +VSM=?, 54 +VTD=, 55 +VTS=?, 50 +VTS=<string>, 49 +VTX, 50 \A, 29 A, 25 A/, 25 AT, 25 AT+FCLASS=?, 47 \B, 29 B, 25

-C, 31 D, 25 definition, 23 disabling response to, 31 DS=, 25 E, 26 F, 26 format, 23 H, 26 I, 26

SocketModem Global MT5634SMI Developer’s Guide 95

Index

\K, 30 M, 26 \N, 30 N, 26 O, 26, 67, 68 P, 26 \Q, 30 Q, 26 Sr?, 27 Sr=, 27 \T, 30 T, 27 \V, 30, 31 V, 27 VIP, 48 W, 27 X, 27

Z, 27 Attention code command, 25 Autoanswer, 23, 40 Automatic Hang-Up Control command, 48

Backspace character, setting, 40 Bell 212A mode, 25 Blacklist command, 31 Break Control command, 30 Break signal, 30

call waiting, 36 Call Waiting Enable command, 36 Callback Attempts command, 33, 38 Callback Delay command, 33, 38 Callback Enable/Disable command, 34, 39 Callback Failed Attempts Display command, 33, 39 Callback Failed Attempts Reset command, 33, 39 Callback Parity command, 33, 39 callback security

callback attempts, 38

callback delay time, 38

enabling and disabling, 34, 39

failed password attempts, 39

inactivity timer, 39

parity, 33, 39

passwords, 33, 39

resetting failed attempts, 39

setup password, 39

types of, 34, 39 Callback Security Reset command, 34 callback security settings, 29 Caller ID, 38 Caller ID Selection command, 38 Canadian Limitations Notice, 87 Canadian regulation requirements, 88 Carriage return character, 40 Carrier loss disconnect time, setting, 40 Cisco Configuration command, 31 Comma, setting pause time, 40 Command mode, 23 Command Speed Response command, 32 Command string, 23

Communication Standard command, 25 Communications programs, 23 configuration

Country Code, 68 Global Wizard, 68 remote, 67

Configuration

Selecting reset configuration command, 29 Control Tone Cadence Reporting command, 55 Country Code, 68 Country code, displaying, 26 Country Configuration/Result Codes Chart, 90 creepages and clearances, 82

Data buffering, 28 Data Calling Tone command, 31 Data Carrier Detect command, 27 Data Compression Control command, 31 Data mode, 23, 26 Data Set Ready Control command, 29 Data Terminal Ready Control command, 28 DCD Control command, 27 Design considerations

Vendor recommendations, 81 Diagnostic information, displaying, 26 Dial command, 25 Dial Stored Telephone Number command, 25 Dial string modifiers, 25 Dialing tones, 40 Direct Connect Enable command, 31 Disconnect delay, 40 Display Current Settings command, 29 Display Service Class Capabilities command, 47 Distinctive Ring command, 38 Distinctive Ring Report command, 33 DSR Control command, 29 DTE/DCE Interface Rates, 65 DTMF Detect Detect and Control DTMF command, 47 DTR Control command, 28 DTR Dialing command, 32

Echo Command Mode Characters command, 26 Echo Online Data Characters command, 26 Electrical Characteristics, 14 EMC, Safety, and R&TTE Directive Compliance, 88 Enable or Disable Voice Mode Packet Protocol

command, 57 Enable/Disable Distinctive Ring (Ring Cadence

Reporting) command, 55 ENTER key, 25 Enter Setup Password command, 34, 39 Enter Voice Receive State command, 49 Error control, setting, 40, 41 Error Correction Mode Selection command, 30 Escape AT Commands, 34 Escape character, 40 Escape sequence, 23, 34 Event Reporting and Masking command, 56

SocketModem Global MT5634SMI Developer’s Guide 96

Index

Fallback, 26 Fallback and Fall Forward command, 31 Fax Branding Statement, 87 Fax commands, 66 FCC Regulations, 85 Features Matrix, 7 Firmware Upgrade Procedure, 69 Firmware version, displaying, 26 flash, 37 Flash Upgrade, 69 Flow control, 30 Flow Control, 58 Flow Control Selection command, 28, 30

Global Wizard, 68 Guard Tone Control command, 28

Handling Precautions, 15 Handshake, 26 Hangup command, 26 Hangup delay, 40 Hook Control command, 26

New Zealand Telecom Warning Notice, 89

On-hook/off-hook, 26 Online BPS Speed command, 32 Online command mode, 23

Parallel Test Board Components, 78 parity, setting, 34, 39 Pause time for comma, setting, 40 PCM Upstream Ignore command, 36 Produce DTMF and Tone Generation in Voice Mode

command, 49 Protocol Result Code command, 30, 31 Pulse Dial Make-to-Break Ratio Selection command,

28 Pulse Dialing command, 26

Quick Connect, 38 Quick Connect Control command, 38

Identify Analog Source/Destination Configuration and

Event Reporting Capabilities command, 52 Inactivity timer, 40 Inactivity Timer command, 30 Information Request command, 26 Initialization strings, 23 Initialize Voice Parameters command, 48 Interface Configuration Commands, 57 Internal Registers, 16, 18 International Modem Restrictions, 88

Leased Line Operation command, 28 Line feed character, 40 Load Factory Settings command, 28 Local Callback Inactivity Timer command, 33, 39 Loopback Test commands, 29

MNP 5 data compression, 31 MNP error correction, 30 Modem on Hold, 36, 37 Modem on Hold Enable command, 36 Modem on Hold Initiate command, 37 Modem on Hold Timer command, 37 Modem Reset command, 27 Modulation Handshake command, 26 Modulation Selection command, 35 Monitor Speaker Mode command, 26

Rate, maximum data, 40 Read Register Value command, 27 Remote configuration, 67

Escape character, 40, 68 Remote escape character, changing, 68 Repeat Last command, 25 Report Event Reporting and Masking Capabilities

command, 56 Report Frequency Support command, 50 Report Manufacturer’s ID command, 48 Report Modem Flow Control Assert and Deassert

Points command, 57 Report Product ID command, 48 Report Version Level command, 48 Report Voice Compression Method command, 54 Resetting the modem, 27, 28 Result Code Format command, 27 Result Code Options command, 27 Result Code Selection command, 27 Result codes, 23 Result Codes, 42 Result Codes Enable/Disable command, 26 Return Online to Data Mode command, 26 Ring Priority vs. AT Command Priority Command, 32 Rings, setting number of, 40 ROM checksum, 26

Safety considerations, 82 Select Analog Source/Destination command, 51 Select Default Beep Tone Duration Timer

(DTMF/Tone Generation Duration) command, 55

SocketModem Global MT5634SMI Developer’s Guide 97

Index

Select DTE/DCE Interface Rate (Turn Off Autobaud)

command, 58 Select Flow Control Method command, 48 Select Maximum MNP Block Size command, 29 Select Modem Operating Mode command, 46 Select Stored Configuration command, 29 Select Voice Compression Method command, 53 Serial Port Baud Rate command, 32 servicing your modem, 85 Set 11-bit Parity command, 34, 39 Set DTE/DCE Inactivity Timer command, 51 Set Modem Flow Control Assert and Deassert Points

command, 57 Set Register Value command, 27 Set Ring Back Goes Away Timer command, 52 Set Ring Back Never Appeared Timer command, 53 Set Silence Detection Sensitivity command, 53 Set the Gain for Received Voice Samples command,

50 Set the Volume for Transmitted Voice Samples

command, 51 Setup password, 67 Setup password, changing, 67 sleep mode, 41 Speaker Mode command, 26 Specifications

technical, 8 Speed

Maximum, 40 Speed conversion (data buffer), 28 S-registers, 40

reading, 27

S0, 40

S1, 40

S10, 40

S108, 41

S11, 40

S2, 40

S28, 40

S3, 40

S30, 40

S35, 40

S36, 40

S37, 40

S38, 41

S4, 40

S43, 41

S48, 41

S5, 40

S6, 40

S7, 40

S8, 40

S89, 41 S9, 40, 68

setting, 27 Standby mode delay time, 41 Start Voice Transmission Process command, 50 Store Callback Password command, 33, 39 Store Dialing command, 29 Store Setup Password command, 34, 39

Technical specifications, 8 Telecom Approvals, 80 Telecom Labeling Requirements, 85 Timing Requirements, 15 Tone Dialing command, 27 Tones, dialing, 40 Transmit Break command, 29

upstream mode, 36 Upstream V.90 data rates, 41

V.22 mode, 25 V.22bis Guard Tone Control command, 28 V.25 data calling tone, 31 V.34 modulation, enabling, 40 V.42 error correction, 30 V.42bis data compression, 31 V.54 Test commands, 29 V.92 mode, 35, 36, 37, 38 V.92 Modem Hook Flash command, 37 View Numbers in Blacklist command, 31 Voice Commands, 44 Voice Mode Result Codes, 58 Voice Mode Result Codes, 59 Voice Mode Shielded Codes, 60 Voice Sample Sessions, 62

Wait time for dial tone, 40 warranty, 85

XON/XOFF Pacing Control, 28

SocketModem Global MT5634SMI Developer’s Guide 98

Technics MT5634SMI-34, MT5634SMI-92 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

Product Description

Features Matrix

Technical Specifications and Features

Chapter 2 – Mechanical Specifications

Physical Dimensions – All Models

Pin Configurations

Chapter 3 – Electrical Characteristics

Introduction

I/O Electrical Characteristics

Timing Requirements

Timing Requirements for Parallel Write

Timing Requirements for Parallel Read

Handling Precautions

SocketModem Parallel Interface Internal Registers

SocketModem MIMIC (MMM) Operation

Time Out Interrupts

Register Functional Descriptions

Internal Registers

SCR Scratch

DLL Divisor Latch (LSByte)

DLM Divisor Latch (MSByte)

Introduction

AT Command Summary

AT Commands

Escape AT Commands

V.92 Commands

S-Registers

Result Codes

Chapter 6 - Voice Commands

Introduction

Voice S-Register Summary

Voice Commands

Commands That Change for Voice Mode Support

Voice +V Commands Summary

Voice +V Commands Detail

Interface Configuration Commands

Flow Control

Voice Mode Result Codes

Unsolicited Voice Mode Result Codes

Valid Complex Event Report Tags

Voice Mode Shielded Codes

Sample Sessions

Sample Rate Selection and Suggested Compression Method

Answer Phone, Play Greeting Message, and Record Message Example

DTE/DCE Interface Rates

Related Manuals

Additional Information

Chapter 7 – Fax Commands

Remote Configuration

Basic Procedure

Setup

Country Code Configuration

Using the Global Wizard Utility

Using AT Commands

Chapter 9 – Firmware Upgrade Procedure

Introduction

Flash Upgrade Firmware

Multi-Tech’s Flash Programming Protocol

Upgrade Overview

Upgrade Steps

Step 1: Identify the Modem Firmware

Step 2: Identify the Current Version of the Firmware

Step 3: Download the Upgrade File

Step 4: Install the Flash Wizard

Step 5: Extract the Firmware Upgrade (.Hex) Files

Step 6: Document Your Stored Parameters

Step 7: Upgrade the Modem’s Firmware

Using the Flash Wizard

Step 8: Restore Your Parameters

Multi-Tech Systems, Inc. Flash Programming Protocol

1. Programming the Modem

2. Other Supported Boot Code Commands

3. Other Programming Concerns

Intel Hex Format

Appendix A – Mechanical Details