Multi-Tech Systems MT5634ZBA User Manual

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MT5634ZBA-DID

Data/Fax/DID Modem

User Guide

Product Number S000234A Revision A MultiModemDID (MT5634ZBA-DID)

written permission from Multi-Tech Systems, Inc. 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 in the content hereof without obligation of Multi-Tech Systems, Inc. to notify any person or organization of such revisions or changes.

Record of Revisions

Revision Date Description

A 09/18/02 Supports V.92. Initial release of manual for publication on CD.

Trademarks

MultiModemZBA, Multi-Tech, and the Multi-Tech logo are trademarks of Multi-Tech Systems, Inc. Adobe and Acrobat are trademarks of Adobe Systems Incorporated. MNP is a trademark of Microcom,

Inc. Microsoft, Windows, Windows 95, Windows 98, Windows Me, Windows NT, Windows 2000, and Windows XP are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. All other brand and product names mentioned in this publication are trademarks or registered trademarks of their respective companies.

Patents

This device is covered by one or more of the following patents: 6,031,867; 6,012,113; 6,009,082; 5,905,794; 5,864,560; 5,815,567; 5,815,503; 5,812,534; 5,809,068; 5,790,532; 5,764,628; 5,764,627; 5,754,589; D394,250; 5,724,356; 5,673,268; 5,673,257; 5,644,594; 5,628,030; 5,619,508; 5,617,423; 5,600,649; 5,592,586; 5,577,041; 5,574,725; D374,222; 5,559,793; 5,546,448; 5,546,395; 5,535,204; 5,500,859; 5,471,470; 5,463,616; 5,453,986; 5,452,289; 5,450,425; D361,764; D355,658; D355,653; D353,598; D353,144; 5,355,365; 5,309,562; 5,301,274. Other patents pending.

World Headquarters

Multi-Tech Systems, Inc. 2205 Woodale Drive Mounds View, MN 55112 U.S.A Telephone (763) 785-3500 or (800) 328-9717 Fax (763) 785-9874 Technical Support (800) 972-2439 Internet

http://www.multitech.com

MultiModemDID User Guide

Contents

Chapter 1 - Introduction and Description......................................................................... 5

Introduction........................................................................................................... 5

Features ............................................................................................................... 5

We Supply ............................................................................................................6

Safety ................................................................................................................... 6

Chapter 2 - Installation .................................................................................................... 7

Step 1: Assemble the Modem .............................................................................. 7

Step 2: Connect the Modem to Your System ....................................................... 7

Step 3: Install the Modem Driver .......................................................................... 8

Removing Your Old Modem from Windows.......................................................... 8

Chapter 3 – Operation................................................................................................... 10

Front Panel of the MultiModemDID Modem ....................................................... 10

DID Operation..................................................................................................... 11

V.92 Operation ................................................................................................... 11

Connecting to the Internet .................................................................................. 12

Dial-Up Networking............................................................................................. 12

Chapter 4 - AT Commands, S -Registers, and Result Codes ....................................... 13

AT Commands.................................................................................................... 14

V.92 Commands ................................................................................................. 28

Other Commands ............................................................................................... 30

DID Commands .................................................................................................. 32

MT5634ZBA-DID Initialization Recommendations ............................................. 32

About the Busy-Out Features and Functions ..................................................... 33

S-Registers ......................................................................................................... 36

Result Codes ...................................................................................................... 39

Chapter 5 - Remote Configuration ................................................................................ 41

Basic Procedure ................................................................................................. 41

Setup .................................................................................................................. 41

MultiModemDID User Guide

Contents

Chapter 6 - Troubleshooting.......................................................................................... 43

None of the Indicators Light................................................................................ 43

The Modem Does Not Respond to Commands.................................................. 43

The Modem Dials But Cannot Connect .............................................................. 44

The Modem Disconnects While Online .............................................................. 45

The Modem Cannot Connect When Answering ................................................. 45

The Modem Doesn’t Work with Caller ID............................................................ 45

Fax and Data Software Can’t Run at the Same Time ........................................ 45

DID Troubleshooting........................................................................................... 46

Appendix A – Regulatory Compliance........................................................................... 47

FCC Part 68 Telecom ......................................................................................... 47

FCC Part 15........................................................................................................ 48

Fax Branding Statement ..................................................................................... 48

Canadian Limitations Notice ............................................................................... 48

Industry Canada .................................................................................................48

Appendix B – Technical Specifications ......................................................................... 49

Appendix C - Warranty and Repairs ............................................................................. 50

Appendix D - Upgrading the Modem’s Firmware .......................................................... 52

Appendix E - Installing a Modem Under Linux .............................................................. 54

Introduction......................................................................................................... 54

Standard Linux Serial Port Definitions ................................................................ 54

Installation .......................................................................................................... 54

Setup .................................................................................................................. 54

Appendix F - Technical Support .................................................................................... 56

Index .................................................................................................... 57

MultiModemDID User Guide

Chapter 1 - Introduction and Description

Welcome to the world of data communications. You have acquired one of the finest intelligent data and fax modems available today from one of America’s oldest and most respected modem manufacturers: Multi-Tech Systems, Inc. This User Guide will help you install, configure, test, and use your modem.

Introduction

The MultiModemDID combines Direct Inward Dial (DID) with Super G3 V.34/33.6K bps fax and V.92 data modes of operation. Direct Inward Dial allows the user to use a block of telephone numbers larger than the number of physical telephone lines for direct dialing to extensions. When combining DID with inbound fax calls to a fax server, each user on the fax server can have faxes automatically routed to them at their client computer desktop.

DID fax routing assigns a unique fax number for every network user or network device (such as a printer). Senders simply dial a typical telephone number - no special procedures are required. The fax server automatically delivers the incoming fax to the user over the local area network.

Users get improved efficiency and security, since their faxes are delivered by the network fax server to the client desktop as soon as they are received. Time-wasting trips to the fax machine are eliminated and employees are more productive. In addition, DID offers a higher degree of security for both the sender and the recipient since faxes are not left unattended at a central fax machine.

The MT5634ZBA-DID utilizes Super G3 V.34 fax speeds of 33.6K bps. Now, computer-based fax servers can achieve the Super G3 speeds found in dedicated fax machines. The MT5634ZBA-DID also supports T.31 Annex B and T.32 Annex C, which allows the higher V.34 speeds to operate with Class 1.0 and Class 2.1 code sets. In addition, “on-the-fly” two-dimensional fax data compression plus support for error correction mode (ECM) increase the performance of the MT5634ZBA-DID to levels previously only found in expensive fax boards and dedicated fax machines.

To implement DID fax routing you must purchase fax server application software that supports Multi-Tech DID commands and DID routing, and obtain an analog DID trunk line which supports the inbound fax calls and a regular loop-start line for outbound fax transmission.

Features

· One Direct Inward Dial (DID) port

· Super G3 V.34/33.6K bps fax communication

· T.31 Annex B Class 1.0 and T.32 Annex C Class 2.1 fax commands

· Error Correction Mode (ECM) provides fast and reliable fax transmissions

· Supports Wink-start, Immediate-start and Delay dial service types

· V.92/56K data mode

· V.44 compression improves data throughput rates

· V.42 error correction

· Flash memory for easy updates

 Plug and Play operation.  Interactive automatic dialing and command mode configuration.  In standard mode, you can store up to four command lines or telephone numbers of up to 40

characters each in the modems’ nonvolatile memory.

 Pulse- or tone-dials and recognizes dial tones and busy signals for reliable call-progress detection.  Detects AT&T calling card tones.  Caller ID.  Remote configuration.  Incorporates self-resetting lightning protection.

MultiModemDID User Guide

Chapter 1 - Introduction and Description

We Supply

• An MT5634ZBA-DID modem

• A set of four self-adhesive plastic feet

• A power supply

• A 9-pin to 9-pin serial cable

• Two RJ-11 telephone cables

• A printed Quick Start Guide

• A CD containing modem drivers, a User Guide, and Adobe Acrobat Reader.

You Supply

• A computer with an available serial port

• A nearby AC power outlet

• A nearby phone line jack

• A nearby analog DID trunk line with a block of associated DID telephone numbers

Safety

1. Use this product only with UL and cUL listed computers.

2. To reduce the risk of fire, use only 26 AWG (.41mm) or larger telephone wiring.

3. Never install telephone wiring during a lightning storm.

4. Never install a telephone jack in wet locations unless the jack is specifically designed for wet locations.

5. Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface.

6. Use caution when installing or modifying telephone lines.

7. Avoid using a telephone during an electrical storm. There is a risk of electrical shock from lightning.

8. Do not use a telephone in the vicinity of a gas leak.

MultiModemDID User Guide

Chapter 2 - Installation

Step 1: Assemble the Modem

The only assembly required is to mount the feet on the bottom of the modem. Simply peel the four selfadhesive plastic feet off the backing strip and press them into the recesses on the bottom of the modem.

Step 2: Connect the Modem to Your System

Turn off your computer. Place the modem in a convenient location, and then connect it to your computer’s serial port, the phone line, AC power, DID line, and your phone.

Connect the Modem to Your PC

Plug one end of the serial cable into the connector on the modem, and plug the other end into a serial port on your computer, such as COM1 or COM2.

Connect the Modem to the Telephone Line

Plug one end of the phone cable into the modem’s LINE jack and the other end into a phone wall jack. The phone cable is included with your modem.

Note: The LINE jack is not interchangeable with the PHONE jack. Do not plug the phone into the LINE jack or the line cable into the PHONE jack.

MultiModemDID User Guide

(Optional) Connect the Modem to the Phone

For voice-only calls, plug a phone into the modem’s PHONE jack.

Connect the Modem to the AC Power Outlet

Make sure the power is switch is OFF. Plug the DC power transformer into a power outlet or power strip. Plug the other end into the PWR jack on the modem. The DC power transformer is included with your modem.

CAUTION: Use only the DC power transformer supplied with the modem. Use of any other

transformer voids the warranty and can damage the modem.

Connect the Modem to the DID Line

Plug one end of the phone cable into the modem’s DID jack and the other end into an analog DID trunk line jack. The DID Line cable is included with your modem.

CAUTION: The DID Line cable has a 4-pos RJ11 on one side and a 6-pos on the other. Never plug

the DID connector into a standard POTS Line. This may damage the modem or the central office equipment. Use only an analog DID Line.

Power-on Test

Test the modem by turning it on (an on-off switch is located on the side panel). When you apply power, the modem performs a diagnostic self-test. The 56 indicator lights, and if a terminal program is running, the TR indicator also lights. If this does not happen, check that the power switch is on, the power supply is solidly connected, and the AC outlet is live. If these measures do not work, see the

Troubleshooting

chapter.

Chapter 2 - Installation

Step 3: Install the Modem Driver

1. Make sure your modem is connected properly, and then turn on your computer. Windows should

detect your new modem and open the Install New Modem wizard.

Note: If Windows cannot find a modem, your modem may be turned off, it may be plugged into the

wrong connector on your computer, or the serial cable may be faulty. See “None of the LEDs Light When the Modem Is Turned On” and “The Modem Does Not Respond to Commands” in the “Troubleshooting” chapter in the complete User Guide.

2. Insert the MT5634ZBA-DID CD into your CD-ROM drive, and then click OK.

3. Windows installs the modem driver.

4. Click Finish to exit

Removing Your Old Modem from Windows

When your new modem replaces another modem, the old modem installation remains in Windows after you install the new modem, and the old modem is still selected in HyperTerminal and other Windows applications. Although you can change the application connection descriptions one at a time, it is easier to force Windows applications to use the new modem by removing the old modem from Windows.

MultiModemDID User Guide

Chapter 2 - Installation

From Windows 2000, XP

1. Click Start | Settings | Control Panel.

2. Double-click the Phone and Modems icon and click on the Modems tab.

3. In the list box, select the old modem.

4. Click Remove, then click Close.

5. The next time you dial a HyperTerminal connection, it will select your new modem and ask you to confirm the selection.

From Windows 98, Me

1. Click Start | Settings | Control Panel.

2. Double-click the Modems icon to open the Modems Properties sheet.

3. In the list box, select the old modem.

4. Click Remove, then click Close.

5. The next time you dial a HyperTerminal connection, it will select your new modem and ask you to confirm the selection.

MultiModemDID User Guide

Chapter 3 - Operation

Chapter 3 – Operation

Front Panel of the MultiModemDID Modem

The MT5634ZBA-DID modem has 10 LED indicators on the front panel that provide information about how your modem is operating: status, configuration and activity.

Transmit Data - The TD LED flashes when the modem is transmitting data to another modem.

Receive Data - The RD LED flashes when the modem is receiving data from another modem.

Carrier Detect - The CD LED lights when the modem detects a valid carrier signal from another

modem. It is on when the modem is communicating with the other modem and off when the link is broken.

56 - The 56 LED is a 56K mode indicator. It lights whenever the modem is set for or connects

using the V.90 or V.92 protocols.

33 - The 33 LED is a V.34 mode indicator. It lights whenever the modem connects using the V.34

protocol.

Off-Hook - The OH LED lights when the modem is off-hook, which occurs when the modem is

dialing, online, or answering a call. The LED flashes when the modem pulse-dials.

Terminal Ready - The TR LED lights when a communications program is using the modem. It

means the modem is ready for an outgoing or incoming call. It goes off when the communications program disconnects the serial port. When it goes off, a connected modem will also disconnect.

Error Correction (V.42) - The EC LED lights continuously when the modem is in V.42 error

correction mode, and it flashes when compression is achieved.

Fax - The FX LED lights when the modem is in fax mode.

DID - The DID LED lights when there is an incoming call on the DID line.

MultiModemDID User Guide

Chapter 3 - Operation

DID Operation

Direct Inward Dialing (DID) uses an analog trunk line to route several phone numbers to one line. The MT5634ZBA-DID modem has four ports, an RS232 serial port, two RJ11 ports for connection to a POTS line and an auxillary phone, and a 4 position RJ12 for connection to the DID analog trunk.

Note: The DID and POTS ports cannot operate simultaneously.

On a DID line the roles of the central office and the DID modem are somewhat reversed. The DID modem must provide a DC voltage, around 48V, to the line. When there is an incoming call, the central office will complete a loop and draw current from the DID modem.

On a standard POTS line, the central office provides the DC voltage and the user will close the loop by lifting the handset of a phone or making a call with a standard modem.

There are two critical points about the DC voltage:

1. The central office is sensitive to the DC polarity. TiP (positive) and riNg (Negative) must be

connected to the line from the central office with the proper polarity. If not, callers will receive an immediate busy signal or may be allowed to make a short connection but become unexpectedly disconnected after a short time.

2. The DC voltage should be applied by the modem at all times, even when not in use. Occasionally,

the central office will check the line; and, if a voltage is not sensed, the line will be put out of service. A call to the phone company will be required to get the line back in service.

The DID modem may use line reversals to signal the central office to send digit information or open the channel to the calling party depending on the start protocol of the DID line. The central office will forward several of the last digits of the incoming call to the DID modem through one of three formats, DTMF, MF, or pulse signaling.

V.92 Operation

Because the V.92 protocol is new and still largely unsupported by central servers, some features are disabled by default in the initial release of the MT5634ZBA-DID modem. This section describes the status of the V.92 features in the initial release. Please note that the V.92 special features require connection to a V.92-capable server.

 General. The V.92 protocol is enabled by default. If the MultiModemZBA-DID detects another

V.92 modem during the handshake phase, they will connect in V.92 mode; otherwise, they will connect in V.90 mode or the highest mutually acceptable mode. The AT command that controls this is +MS=.

 Commands. AT commands specific to the V.92 protocol and the new V.44 compression protocol

begin with the plus character (+). These commands are in this manual. Also, the S109 register has been modified to support V.92.

 PCM Upstream. PCM Upstream is disabled by default. To upload files at speeds above 33.6

kbps, you must enable PCM Upstream using the command +PIG=1. Please note that this requires connection to a V.92-capable server. Also, please note that since upload speeds are affected by line conditions, meeting the previous requirements cannot guarantee speeds above 33.6 kbps.

 Quick Connect. Quick Connect, which shortens the handshake time with another V.92 modem, is

disabled by default. To enable it, use the command +PQC=0. Quick Connect speeds connect times by skipping the line test during the handshake and using the configuration from the last data connection. Quick Connect works best when line conditions are consistent from call to call. If line conditions are variable, enabling Quick Connect can actually increase the connect time slightly.

 Modem on Hold (is not available at this time).

MultiModemDID User Guide

Chapter 3 - Operation

Connecting to the Internet

Your Multi-Tech modem is your gateway to the Internet and the World Wide Web. To access the Internet and Web via your modem, you must establish a dial-up account with an Internet service provider (ISP). To locate an ISP near you, look in a local directory or computer publication. Your ISP should provide you with the following information:

 User name (also called user ID)  Password  Access number (the number you call to connect to the server)  Host name and/or domain name  Domain Name Server (DNS) server address

If, besides the Web, you use the Internet for e-mail and newsgroups, your ISP should also provide you with the following information:

 E-mail or POP mail address  POP server address  Mail or SMTP address  News or NNT server address

Dial-Up Networking

Before you can connect to the Internet, you must set up a remote-node client program on your computer. The Windows version is called Dial-Up Networking. Dial-Up Networking establishes your connection to the ISP’s server, which is the shared computer that manages calls from clients (your computer) to the Internet. Most, if not all, Windows browsers start Dial-Up Networking automatically when you open them.

For instructions on how to set up Dial-Up Networking, consult your ISP or your operating system’s online help or printed documentation. Many ISPs include, as part of their service, a program that will install and configure Dial-Up Networking automatically for you.

MultiModemDID User Guide

Chapter 4 - AT Commands, S-Registers, Result Codes

Chapter 4 - AT Commands, S -Registers,

and Result Codes

AT commands are used to control the operation of your modem. They are so called because each command must be preceded by the characters AT 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

mode

whenever it is connected to another modem and ready to exchange data. 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

sequence

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 HyperTerminal

or the PhoneTools communications program included with your modem. 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 autoanswer on or off.

The format for entering an AT command is ATXn, where X is the command and n is the value for the command, sometimes called the command you can omit it from the command; thus, AT&W is equivalent to AT&W0. Most commands have a value, which is the value that is set at the factory. The default values are shown in the “AT Commands” section, which begins on the next page.

You must press ENTER to send the command to the modem. Any time the modem receives a command, it sends a response known as a

CONNECT

For a table of valid result codes, see “Result Codes” at the end of this chapter. You can issue several commands in one line, in what is called a command

begins with AT and ends when you press ENTER. Spaces to separate the commands are optional; they are ignored by the command interpreter. The most familiar command string is the which is used to configure the modem when it is turned on or reset, or when your communications software calls another modem.

command mode

(+++) followed immediately by the AT characters and the command, e.g., +++ATH to hang up

messages that the modem sends to the computer when it is connecting to another modem.

whenever it is not connected to another modem. The modem is in

Online command mode

escape

result code

parameter

. The most common result codes are OK,

. The value is always a number. If the value is zero,

ERROR

string

. The command string

initialization string

, and the

data

default

MultiModemDID User Guide

AT Commands

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

Chapter 4 - AT Commands, S-Registers, Result Codes

the escape sequence.

Command: E

NTER Key

Values: n/a Description: Press the E

NTER or RETURN key to execute most commands.

Command: A Answer Values: n/a Description: Answers an incoming call before the final ring.

Command: A/ Repeat Last Command Values: n/a Description: Repeats the last command string. Do not precede this

Command: B Values:

command with AT. Do not press E

Communication Standard Setting

= 0–3, 15, 16

NTER to execute.

Default: 1 and 16 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.

Command: D Values:

Dial

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

Dial string modifiers:

L Redial last number. (Must be placed immediately after ATD.) P Select pulse-dialing until a T is encountered. Affects current

and subsequent dialing.

T Select tone-dialing until a P is encountered. Affects current

and subsequent dialing.

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.

MultiModemDID User Guide

Chapter 4 - AT Commands, S-Registers, Result Codes

@ Wait for quiet answer. Causes modem to wait for a ring

back, 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= Values: Default: none Description: Dials a number previously stored in directory number y by the

Command: E Values: Default: 1 Description: E0 Does not echo keyboard input to the terminal.

Command: F Values: Default: 1 Description: F0 Enables online data character echo. (Not supported.)

Command: H Values: Default: 0 Description: H0 Goes on-hook (hangs up).

Dial Stored Telephone Number

= 0, 1, 2

&Zn=x

Echo Command Mode Characters

E1 Does echo keyboard input to the terminal.

Echo Online Data Characters

n =

F1 Disables online data character echo (included for backward

compatibility with some software).

Hook Control

H1 Goes off-hook (makes the phone line busy).

command. Example: ATDS=3.

= 0 or 1

0, 1

= 0 or 1

Command: I Values: Default: None Description: I0 Displays default speed and controller firmware version.

Information Request

= 0–5, 9, 11

I1 Calculates and displays ROM checksum (e.g., I2 Checks ROM and verifies the checksum, displaying

ROR

. I3 Displays default speed and controller firmware version. I4 Displays firmware version for data pump (e.g., 17). I5 Displays the board ID: software version, hardware version, and

the country ID in hexadecimal format (e.g., I9 Displays the country code in decimal format (e.g., I11 Displays 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.

B399

s0503a01V, 0, 34

ER-

MultiModemDID User Guide

Chapter 4 - AT Commands, S-Registers, Result Codes

Command: M Values: Default: 1 Description: M0 Speaker always off.

Command: N Values: Default: 1 Description: N0 Modem performs handshake only at communication standard

Command: O Values: 0, 1, 3 Default: None Description: O0 Exits online command mode and returns to data mode (see

Monitor Speaker Mode

= 0, 1, 2, or 3

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.

Modulation Handshake

= 0 or 1

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.

Return Online to Data Mode

+++AT<CR> escape sequence ).

O1 Issues a retrain and returns to online data mode. O3 Issues a rate renegotiation and returns 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: Q Values: Default: 0 Description: Q0 Enables result codes.

Command: Sr=nSet Register Value Values: Default: None Description: Sets the value of register Sr to the value of n, where n is

Command: Sr? Read Register Value Values: Default: None Description: Reads the value of register Sr and displays it in 3-digit decimal

Result Codes Enable/Disable

= 0, 1

Q1 Disables result codes.

= S-register number; n varies

entered in decimal format. Example: S0=1.

= S-register number

form. For example, S2? gives the response

043

MultiModemDID User Guide

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

Chapter 4 - AT Commands, S-Registers, Result Codes

digits are tone dialed until a P command or dial modifier is

received.

Command: V Values: Default: 1 Description: V0 Displays result codes as digits (terse response).

Command: W Values: Default: 2 Description: W0

Command: X Values: Default: 4 Description: X0 Basic result codes (

Result Code Format

= 0 or 1

V1 Displays result codes as words (verbose response).

Result Code Options

= 0, 1, 2

CONNECT

protocol result codes. W1

CONNECT

protocol result codes. W2

CONNECT

result codes.

Result Code Selection

= 0–7

tone or busy signal. X1 Extended result codes (

not look for dial tone or busy signal. X2 Extended result codes with

busy signal. X3 Extended result codes with X4 Extended result codes with X5 Extended result codes with X6 Extended result codes with X7 Basic result codes with

result code reports serial port speed, disables

result code reports serial port speed, enables

result code reports line speed, enables protocol

e.g., CONNECT

); does not look for dial

e.g., CONNECT 46000 V42bis

NO DIALTONE

BUSY

; does not look for dial tone.

NO DIALTONE NO DIALTONE NO DIALTONE

NO DIALTONE

; does not look for

and and and

and

BUSY

BUSY BUSY BUSY

); does

. . .

Command: Z Values: Default: None Description: Z0 Resets modem to profile saved by the last &W command.

Command: &CnData Carrier Detect (DCD) Control Values: Default: 1 Description: &C0 Forces the DCD circuit to be always high.

Modem Reset

= 0 or 1

Z1 Same as Z0.

= 0, 1, or 2

&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, then goes high

again (for some PBX phone systems).

MultiModemDID User Guide

Command: &DnData Terminal Ready (DTR) Control Values: Default: 2 Description: &D0 Modem ignores the true status of the DTR signal and responds

Chapter 4 - AT Commands, S-Registers, Result Codes

= 0, 1, 2, or 3

as if it is always on. &D1 If DTR drops while in online data mode, the modem enters

command mode, issues an &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.

, and remains connected.

Command: &E Values: Default: 12 Description: &E12 Disables XON/XOFF pacing.

Note: &E13 has no effect if hardware control (&K3) is selected.

Command: &F Values: Default: None Description: &F0 Loads factory settings as active configuration.

Note: See also the Z command.

Command: &GnV.22bis Guard Tone Control Values: Default: 0 Description: &G0 Disables guard tone.

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

Command: &KnFlow Control Selection Values: Defaults: 3 Description: &K0 Disables flow control.

XON/XOFF Pacing Control

= 12 or 13

&E13 Enables XON/XOFF pacing. (&K4 must also be set.)

Load Factory Settings

= 0

= 0, 1, or 2

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

= 0, 3, or 4

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

Command: &QnAsynchronous Communications Mode Values: Default: 5 Description: &Q0 Asynchronous with data buffering. Same as \N0.

= 0, 5, 6, 8, or 9

&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.

MultiModemDID User Guide

Command: &SnData Set Ready (DSR) Control Values: Default: 0 Description: &S0 DSR is always high (on).

Command: &T Values: Default: None Description: &T0 Abort. Stops any test in progress.

Note: To stop a test, you must use the escape sequence (+++AT) before typing &T0.

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

Chapter 4 - AT Commands, S-Registers, Result Codes

= 0 or 1

&S1 DSR goes high only during a connection.

V.54 Test Commands

= 0, 1, 3 or 6

&T1 Initiates local analog loopback test. &T3 Initiates local digital loopback test. &T6 Initiates remote digital loopback test.

security settings if callback security is enabled. If the setup

password has been entered, it also displays the callback

security passwords.

Command: &WnStore Current Configuration Values: Default: 1 Description: &W0 Stores current modem settings in nonvolatile memory and

Command: &Z Values:

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

Command: \A Values: Default: 3 Description: \A0 64-character maximum.

= 0, 1

causes them to be loaded in place of the factory defaults at

power-on or following the ATZ command. See also the &F

command. &W1 Clears user default settings from nonvolatile memory and

causes the factory defaults to be loaded at power-on or

following the ATZ command.

n=x

Store Dialing Command

= 0, 1, 2 (callback security disabled)

= Dialing command string

number using the command ATDS=n. See also the #CBS

command.

Select Maximum MNP Block Size

= 0, 1, 2, or 3

\A1 128-character maximum. \A2 192-character maximum. \A3 256-character maximum.

MultiModemDID User Guide

Chapter 4 - AT Commands, S-Registers, Result Codes

Command: \B Values: Default: 3 Description: In non-error-correction mode only, sends a break signal of the

Command: \K Values: Default: 5 Description: Controls the response of the modem to a break received from

Transmit Break

= 0–9 in 100 ms units

specified length to a remote modem. Works in conjunction with

the \K command.

Break Control

= 0–5

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 Enters online command mode, no break sent to the remote

modem. \K1 Clears data buffers and send break to the remote modem. \K2 Same as \K0. \K3 Sends break immediately to the remote modem . \K4 Same as \K0. \K5 Sends break to the remote modem in sequence with the

transmitted data.

Data mode. The modem receives the break from the remote

modem: \K0 Clears data buffers and sends break to the computer. \K1 Same as \K0. \K2 Sends break immediately to the computer. \K3 Same as \K2. \K4 Sends break to the computer in sequence with the received data. \K5 Same as \K4.

Online command mode. The modem receives a \B

command from the computer: \K0 Clears data buffers and sends break to the remote modem. \K1 Same as \K0. \K2 Sends break immediately to the remote modem. \K3 Same as \K2. \K4 Sends break to the remote modem in sequence with the

transmitted data. \K5 Same as \K4.

MultiModemDID User Guide

Chapter 4 - AT Commands, S-Registers, Result Codes

Command: \N Values: Default: 3 Description: \N0 Non-error correction mode with data buffering (buffer mode;

Command: \QnFlow Control Selection Values: Default: 3 Description: \Q0 Disables flow control (same as &K0).

Error Correction Mode Selection

= 0–5, or 7

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).

= 0, 1, or 3

\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: \T Values: Default: 0 Description: \Tn Sets the time (in minutes) that the modem waits after the last

Note: You can also set the inactivity timer by changing the value of S30.

Command: \V Values: Default: 1 Description: \V0 Disables the appending of the protocol result code to the DCE

Command: \X Values: Defaults: 0 Description: \X0 Modem responds to and discards XON/XOFF characters.

Command: -CnData Calling Tone Values: Defaults: 0 Description: -C0 Disables V.25 data calling tone to deny remote data/fax/voice

Inactivity Timer

= 0, 1–255

character is sent or received before it disconnects. A value of

zero disables the timer. Applies only in buffer mode.

Protocol Result Code

= 0, 1, or 2

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

speed. \V2 Same as \V1.

XON/XOFF Pass-Through

= 0 or 1

\X1 Modem responds to and passes XON/XOFF characters.

= 0 or 1

discrimination.

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

discrimination.

MultiModemDID User Guide

Command: %A Adaptive Answer Result Code Enable Values: Default: 0 Description: The %A command controls whether the

Chapter 4 - AT Commands, S-Registers, Result Codes

= 0 or 1

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

and

FAX

some servers to select the appropriate communication program. %A0 Disables adaptive answer result codes.

%A1 Enables adaptive answer result codes.

DATA

to the computer when it detects data tones,

when it detects fax tones. These strings are used by

DATA

and

FAX

result

Note: For descriptions of the +FAA= and other fax commands, see the Multi-Tech

Class 2.1 Developer’s Guide

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

Command: %CnData Compression Control Values: Default: 1 Description: %C0 Disable sV.42bis/MNP 5 data compression.

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

Command: %DCnAT Command Control Values: 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 it is turned on.

Command: %EnFallback and Fall Forward Control Values: Default: 2 Description: %E0 Disables fallback and fall-forward.

%E1 Enables fallback, disables fall-forward. %E2 Enables fallback and fall-forward.

the last call attempted in the previous two hours failed. In

countries that do not require blacklisting, the

code appears.

= 0 or 1

= 0, 1, or 2

ERROR

Fax

result

Command: %HnDirect Connect Enable Values: Default: 0 Description: %H0 Sets callback security to normal operation.

= 0, 1

%H1 All callback security calls will be direct connect regardless of

whether the password or phone number has the - character.

MultiModemDID User Guide

Command: %RnCisco Configuration Values: Default: 0 Description: %R0 Disables Cisco configuration.

Command: %SnCommand Speed Response Values: Default: 0 Description: %S0 Sets modem to respond to AT commands at all normal speeds.

Chapter 4 - AT Commands, S-Registers, Result Codes

= 0, 1

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

a Cisco router.

= 0, 1

%S1 AT commands accepted at 115200 bps only. AT commands at

other speeds are ignored.

Command: $D Values: Default: 0 Description: $D0 Disables DTR dialing.

Command: $EBnAsynchronous Word Length Values: Default: 0 Description: $EB0 Enables 10-bit mode.

Command: $SBnSerial Port Baud Rate Values: Default: 57600 Description: $SB300 Set serial port to 300 bps.

DTR Dialing

= 0 or 1

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

= 0 or 1

$EB1 Enables 11-bit mode.

= speed in bits per second

$SB1200 Set serial port to 1200 bps. $SB2400 Set serial port to 2400 bps. $SB4800 Set serial port to 4800 bps. $SB9600 Set serial port to 9600 bps. $SB19200 Set serial port to 19200 bps. $SB38400 Set serial port to 38400 bps. $SB57600 Set serial port to 57600 bps. $SB115200 Set serial port to 115200 bps.

Command: +DCS= Values:

Default: 1, 2 Description: Selects V.42bis/V.44 data compression.

+DCS=0,0 V.42bis and V.44 data compression are both disabled. +DCS=0,1 V.42bis is disabled; V.44 data compression is acceptable. +DCS=0,2 V.42bis is disabled; V.44 only when connected to a V.92

+DCS=1,0 V.42bis is acceptable; V.44 data compression is disabled. +DCS=1,1 V.42bis is acceptable; V.44 data compression is acceptable. +DCS=1,2 V.42bis is acceptable; V.44 only when connected to a V.92 server. +DCS=? Displays the allowed values. +DCS? Displays the current value.

x,y

Select V.44 Data Compression

= 0 or 1 (V.42

= 0, 1, or 2 (V.44)

server.

bis

)

MultiModemDID User Guide

Command: +DR=nV.44 Data Compression Reporting Values: Default: 0 Description: Enables or disables the V.44 data compression report. If the

Chapter 4 - AT Commands, S-Registers, Result Codes

= 0 or 1

compression report is enabled, the +DR:<

result code reports the current DCE-DCE data compression type.

It is issued after the Error Control Report (+ER) and before the

final result code (e.g.,

code descriptions are shown after the command descriptions.

+DR=0 Disables the V.44 compression report. +DR=1 Enables the V.44 compression report. +DR=? Displays the allowed values. +DR? Displays the current value.

+DR: NONE Data compression not in use. +DR: V42B V.42bis is in use in both directions. +DR: V44 V.44 is in use in both directions.

CONNECT

). The intermediate result

type

> intermediate

Command: +DS44= Values: See description Default: See description Description: Controls the V.44 data compression function.

+DS44=? Reports supported options in the format (list of supported

V.44 Data Compression

The command syntax is +DS44=[

[,[

max_codewords_tx

[,[

max_string_rx

Subparameters that are not entered retain their current value.

Commas separate optional subparameters, and must be inserted

to skip a subparameter. Example: +DS44=,,,2048,2048<CR>

changes the maximum number of code words in both

directions, and keeps all other settings at their current values.

direction

values), (list of supported

supported

values), (list of supported

supported

values), (0), (0), (list of supported

max_string_tx

max_history_rx

][,[

max_codewords_rx

][,[

max_history_tx

max_codewords_rx

values), (list of supported

max_history_tx

values). Example:

direction

][,[

][,[0][,[0]

max_history_rx

max_codewords_tx

values), (list of

(0), (256-2048), (256-2048), (31-255), (31-255), (512-11008),

(512-11008).

+DS44? Reports current options in the following format:

direction

, 0, 0,

max_codewords_tx, max_codewords_rx

max_string_tx, max_string_rx, max_history_tx, max_history_rx.

Example:

+DS44: 3, 0, 0, 1024, 1024, 255, 255, 5120, 4096.

][,[

max_string_tx

]]]]]]]]]<CR>

values), (list of

max_string_rx

+DS44: (3, 0), (0),

]

MultiModemDID User Guide

Subparameters

direction

Chapter 4 - AT Commands, S-Registers, Result Codes

Specifies the DTE direction of the data compression.

0 No compression. 3 Compression in both directions (default).

max_codewords_tx

1024 Default.

256–2048 Maximum number of code words in transmit direction.

max_codewords_rx

1024 Default.

256–2048 Maximum number of code words in receive direction.

max_string_tx

255 Default.

31–255 Maximum string length in transmit direction.

max_string_rx

255 Default.

31–255 Maximum string length in receive direction.

max_history_tx

5120 Default.

512–11008 History buffer size in transmit direction.

Specifies the maximum number of code words to be negotiated

in the transmit direction.

Specifies the maximum number of code words to be negotiated

in the receive direction.

Specifies the maximum string length to be negotiated in the

transmit direction.

Specifies the maximum string length to be negotiated in the

receive direction.

Specifies the maximum length of the history buffer to be

negotiated in the transmit direction.

max_history_rx

4096 Default.

512–11008 History buffer size in receive direction.

Command: +ES=nEnable Synchronous Buffered Mode Values: Default: None Description: Allows an H.324 video application direct access to the

+ES=6 Enables direct access to the synchronous data channel. +ES=? Displays the allowed values. +ES? Displays the current value.

Specifies the maximum length of the history buffer to be

negotiated in the receive direction.

= 6

synchronous data channel. On underflow, the modem sends

HDLC flag idle (0x7E) to the remote modem. This special error

control mode is overridden by any of the following commands:

&F, &M, &Q, or \N.

MultiModemDID User Guide

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

Chapter 4 - AT Commands, S-Registers, Result Codes

disables automode, and specifies the highest downstream and

upstream connection rates using one to four subparameters.

The command syntax is

mod

][,[

+MS=[

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 other settings at current values.

+MS=? Reports supported options in the format (list of supported

values),(list of supported supported

max_rate

values). Example:

automode

values),(0),(list of supported

values),(0),(list of

max_rx_rate

+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

max_rate, 0, max_rx_rate.

Example:

mod, automode, 0,

+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 Modulation Possible rates (bps)

V92

V90

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

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>

2. Selects V.92 modulation as first priority. If a V.92 connection cannot be

3. Selects V.90 modulation as first priority. If a V.90 connection cannot be

V.92 56000, 54666, 53333, 52000, 50666, 49333,

48000, 46666, 45333, 44000, 42666, 41333. 40000, 38666, 37333, 36000, 34666, 33333,

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

subparameters.

established, the modem attempts V.90, V.34, V.32bis, etc.

established, the modem attempts V.34, V.32bis, etc.

32000, 30666, 29333, or 28000

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

21600,19200, 16800, 14400, 12000, 9600, 7200, 4800, or 2400

mod

MultiModemDID User Guide

Chapter 4 - AT Commands, S-Registers, Result Codes

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 and

max_rx_rate

parameters. The options are:

max_rate

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

(default).

300–33600 Maximum rate value limited by the modulation selected in

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

(default).

300–56000 Maximum rate value limited by the modulation selected in

See “Possible rates” in the

mod

table.

mod

MultiModemDID User Guide

V.92 Commands

Command: +PCW=nCall Waiting Enable Values: Default: 2 Description: Controls the action to be taken upon detection of a call waiting

Command: +PIG=nPCM Upstream Ignore Values: Default: 1 Description: Controls the use of PCM upstream during V.92 operation. PCM

Chapter 4 - AT Commands, S-Registers, Result Codes

= 0, 1, or 2

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

= 0 or 1

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=nModem on Hold Enable Values: Default: 1 Description: Controls if modem on hold procedures are enabled during V.92

+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

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,

= 0 or 1

operation. Normally controlled by a modem on hold program.

Values specified by this command are not modified when an

AT&F command is issued.

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.

MultiModemDID User Guide

Command: +PMHR=nModem on Hold Initiate Values: Default: 0 Description: +PMHR is an action command that causes the modem to

+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

Chapter 4 - AT Commands, S-Registers, Result Codes

= 0–13

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.

Command: +PMHT= Values: Default: 0 Description: Determines if the modem will accept a V.92 Modem on Hold

+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

Modem on Hold Timer

= 0–13

(MOH) request and will set the MoH timeout.

MultiModemDID User Guide

Command: +PQC=nQuick Connect Control Values: Default: 3 Description: Controls the V.92 shortened Phase 1 and Phase 2 startup

Other Commands

Command: +VCID=nCaller ID Selection Values: Default: 0 Description: Enables Caller ID detection and configures the reporting and

Chapter 4 - AT Commands, S-Registers, Result Codes

= 0, 1, 2, or 3

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

= 0, 1, or 2

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 current value

Command: +VDR= Values:

Default: 0, 0 Description: Enables reporting of ring cadence information to the DTE and

+VDR=0, n/a Disables Distinctive Ring cadence reporting. +VDR=1, 0 Enables Distinctive Ring cadence reporting. Other call progress

+VDR=1, >0 Enables Distinctive Ring cadence reporting. The

+VDR=? Displays the allowed values. +VDR? Displays the current value.

x, y

Distinctive Ring Report

= 0, 1

= 0–255

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>

the ring is in the form

<LF>.

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.

result codes (including

code is reported after the falling edge of the ring pulse (i.e., after

the DRON report).

Distinctive Ring report control.

Minimum ring interval in 100 ms units.

, and the length of

DRON=number in units of 100 ms<CR>

The modem may produce a Ring event code after the

RING

) are reported as normal.

RING

result

MultiModemDID User Guide

Escape Commands

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

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

Chapter 4 - AT Commands, S-Registers, Result Codes

command) while remaining online. Type +++AT and up to six

command characters, then press ENTER. Used mostly to issue

the hang-up command: +++ATH<CR>.

modem. The remote configuration escape character (%) is de-

fined in register S13.

MultiModemDID User Guide

Chapter 4 - AT Commands, S-Registers, Result Codes

DID Commands

The MT5634ZBA-DID modem uses *D commands to configure the modem’s DID features. The modem must be configured for the proper protocol, digit format, digit time out, digit report format, and number of digits. This configuration is determined by the company from which the DID line is ordered and the setup used by the phone company. The DID configuration parameter settings of the modem can be viewed as part of the report of the AT&V command and can be stored with the AT&W0 command.

MT5634ZBA-DID Initialization Recommendations

Since the MT5634ZBA-DID can be processing a DID call before signaling the DTE, care must be taken to avoid unexpected call problems.

The first command of an initialization string should probably busy out the DID line. This will allow calls to rollover to other trunk lines in a trunk system or receive a busy signal in a single-line system. This will also avoid problems such as missing the incoming DID number information or causing a character abort of the incoming call after the DID information has been received.

Conversely, the last command to give the modem should be the AT*DS configuration command putting the modem back in service and ready to receive incoming DID calls.

A check has been put in the AT&F command to determine if the modem has started a DID call. If the modem has started a DID call, it will respond to an AT&F command with an ERROR response and not process the AT&F.

The AT*DW command can be used to keep a modem “Off Hook” or busied out at the completion of a DID call so the modem can be initialized without the concern of corrupting an incoming call.

Commands:

Command: *DS Start Protocol Values: Default: 0 Description: Three DID start protocols: Wink, Immediate, and Delay Dial:

*DS0 Disables DID detection of incoming DID calls (DC voltage still

*DS1 Wink Start *DS2 Immediate Start *DS3 Delay Dial

= 0, 1, 2 or 3

In the Wink Start protocol, the central office closes the loop and

draws current. The modem senses the current draw and will

reverse the DC polarity for a short pulse to signal that it sees

the incoming call and is ready to accept the DID digits.

Delay Dial is the same as Wink Start except that the length of

the reverse pulse is not defined. When the DID modem senses

the current draw, it reverses the DC voltage until it is ready to

receive the DID digits.

On an Immediate Start DID line, the central office closes the

loop for a short time and then sends the DID digits without

waiting for a response from the DID modem.

After the central office sends the DID digits all three lines

operate the same way. The modem will reverse the DC polarity

to signal the beginning of the call and the central office will

open the channel to the caller and begin billing. When the call

is completed, the DID modem will return the DC voltage to

normal polarity and the central office will open the circuit.

While the modem is monitoring the DID line for current draw, it

is also monitoring the POTS line for incoming rings.

applies to DID line, but polarity is reversed to busy out line).

MultiModemDID User Guide

Command: *DT Wait for Digit Time-Out Time Values: Default: 0 Description: This command is used to configure the time between each

Command: *DN Number of DID Digits Expected Values: 0-7 Default: 0 Description: This command is used to configure the modem for the

Chapter 4 - AT Commands, S-Registers, Result Codes

= 0, 1, 2 or 3

digit the modem will wait. If the modem has not received the proper number of digits when the timer expires, it will report the digits it has received so far and move on to the answering sequence described in the *DN command.

expected number of digits from the central office (the central

office will send the last few digits of the called number). When

the proper number of digits are received, the modem will pass

the digit information to the host computer. After passing the

digits the modem will answer the incoming call if S0 is greater

than 0. Otherwise the modem will wait for the host computer to

issue an ATA command.

Command: *DW Busy-Out Timer at End of Call Values: 0-255 Default: 0 Description: This command defines the amount of time to busy out the

modem upon disconnecting from a DID call. The delay is ended

when the timer runs out or a *DS command is received.

*DW0 This command

places the DID line a busy-out state.

*DW255 This command will extend the delay indefinitely.

disables

the delay. It ends the delay, but it also

About the Busy-Out Features and Functions

A Direct Inward Dial (DID) line can be put in a “Busy Out” state by reversing the battery polarity the modem supplies to the line. This will cause a caller to receiver either a busy signal in a single line system or roll over to the next line in a trunk system. The line is busied out in the following cases.

- Modem is set to the factory default DID start format *DS0

- Modem receives an incoming ring on the POTS line

- Modem is given the dial command ATD

- Modem is set with the *DW command to busy-out delay after finishing a call

Command: *DD Digit Format Values: 0, 1, 2 Default: 0 Description: This command is used to configure the modem for the format

the central office will send the incoming digits. At this time, only DTMF is supported.

*DD0 DTMF *DD1 Pulse *DD2 MF (MultiFrequency)

MultiModemDID User Guide

Command: *DF Format for Reporting Incoming DID Number Values: 0, 1, 2 Default: 0 Description: This command allows for three different reporting formats of

*DF0 “DID:xxx” - Default *DF1 “DTMFx” for each digit *DF2 “RINGxxx”

Chapter 4 - AT Commands, S-Registers, Result Codes

the incoming number information. This information is output when either the proper number of digits have been received or the time out timer has expired and before the modem answers the call. When set to *DFI, the modem will output one line for every digit received. For the other formats, the modem will only output one line per call.

Example Sessions

[15:31:29.100] AT+FCLASS=0 [15:31:29.100] [15:31:29.100] OK [15:31:29.160] AT*DS1*DD0*DF0*DN4*DT15 [15:31:29.160] [15:31:29.160] OK [15:31:29.160] ATS0=1 [15:31:29.160] [15:31:29.160] OK [15:31:40.800] [15:31:40.800] DID:5980 [15:31:54.920] [DCD] [15:31:54.920] CONNECT 28800 V42bis [15:32:00.850] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:32:00.850] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:32:00.850] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:32:06.780] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:32:06.830] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:32:12.600] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:32:12.660] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:32:12.710] +++ATH [15:32:12.730] [dcd] [15:32:12.730] NO CARRIER

[15:26:39.260] AT+FCLASS=0 [15:26:39.260] [15:26:39.260] OK [15:26:39.260] AT*DS1*DD0*DF1*DN4*DT15 [15:26:39.260] [15:26:39.260] OK [15:26:39.310] ATS0=1 [15:26:39.310] [15:26:39.310] OK [15:26:52.440] [15:26:52.440] DTMF5

MultiModemDID User Guide

[15:26:52.500] DTMF9 [15:26:52.500] DTMF8 [15:26:52.500] DTMF0 [15:27:06.610] [DCD] [15:27:06.610] CONNECT 31200 V42bis [15:27:07.990] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:27:08.040] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:27:08.040] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:27:08.040] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:27:08.100] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:27:08.260] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:27:08.420] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:27:08.420] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:27:08.480] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:27:08.480] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:27:24.680] +++ATH [15:27:24.850] [dcd] [15:27:25.400] NO CARRIER

[15:29:14.420] AT+FCLASS=0 [15:29:14.420] [15:29:14.420] OK [15:29:14.480] AT*DS1*DD0*DF2*DN4*DT15 [15:29:14.480] [15:29:14.480] OK [15:29:14.480] ATS0=1 [15:29:14.530] [15:29:14.530] OK [15:29:25.960] [15:29:25.960] RING5980 [15:29:40.130] [DCD] [15:29:40.130] CONNECT 28800 V42bis [15:29:41.500] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:29:41.500] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:29:41.560] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:29:41.560] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:29:41.560] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:29:41.610] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:29:41.610] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:29:41.670] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:29:41.670] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:29:41.670] 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz [15:29:58.140] +++ATH [15:29:58.310] [dcd] [15:29:58.860] NO CARRIER

Chapter 4 - AT Commands, S-Registers, Result Codes

MultiModemDID User Guide

S-Registers

Chapter 4 - AT Commands, S-Registers, Result Codes

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

S1 S2

1 ring 0–255 1 Sets the number of rings until the modem

answers. ATS0=0 disables autoanswer completely. Range varies by country. Set

S0=2 for Caller ID. 1 ring 0–255 0 Counts the rings that have occurred. decimal 0–255 43 (+) Sets ASCII code for the escape sequence

character. Values greater than 127 disable

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

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

decimal 0–127 8 (^H) Sets the ASCII code for the backspace

character. Values over 32 disable it. seconds 2–65* 2* Sets the time the modem waits after it goes

off-hook before it begins to dial the telephone

number.

S-registers

S10

S11 S18

S28 S30

S35

seconds 1–255* 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. seconds 2–65 2 Sets the length of a pause caused by a

comma character in a dialing command. decimal 0–127 37 (%) Sets ASCII code for remote configuration

escape character. S9=0 disables remote

configuration. 100 ms 1–255 20 Sets how long a carrier signal must be lost

before the modem disconnects. 1 ms 50–150* 95* Sets spacing and duration of dialing tones. 50 ms 0–255 20 Sets the time the CD signal drops before

going high again. Used for some PBX and

CBX phone systems. See &C2 command. decimal 0, 1–255 1 0 disables, 1–255 enables V.34 modulation. 1 minute 0, 1–255 0 Sets the time the modem waits before it

disconnects when no data is sent or

received. A value of zero disables the timer.

See also the \T command decimal 0–1 0 0 disables, 1 enables the V.25 data calling

tone, which allows remote data/fax/voice

discrimination.

MultiModemDID User Guide

Chapter 4 - AT Commands, S-Registers, Result Codes

S36

S37

decimal 0–7 7 Specifies the action to take in the event of a

negotiation failure when error control is

selected. (See S48.) decimal 0–19 0 Sets the maximum V.34 “upstream” speed

at which the modem attempts to connect.

Value Speed

0 maximum modem 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 18 31200 bps 19 33600 bps

S38

decimal 0–23 1 Sets the maximum 56K “downstream” speed

at which the modem attempts to connect. The default maximum speed is 56K bps. Note: When using V.34 or V.32 client-to-client connections in poor conditions, setting

S38=0 may result in better performance. Value Rate

0 56K disabled

1 56K autorate

2 28000 bps

3 29333 bps

4 30666 bps

5 32000 bps

6 33333 bps

7 34666 bps

8 36000 bps

9 37333 bps 10 38666 bps 11 40000 bps 12 41333 bps 13 42666 bps 14 44000 bps 15 45333 bps 16 46666 bps

MultiModemDID User Guide

Chapter 4 - AT Commands, S-Registers, Result Codes

17 48000 bps 18 49333 bps 19 50666 bps 20 52000 bps 21 53333 bps 22 54666 bps 23 56000 bps

S42

S48

S89

S108

decimal 0–1 1 Enables/disables the 56K auto rate. When

56K auto is disabled, fallback to V.34 is also disabled. 0 = disable; 1 = enable.

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 S36=1, 3 S36=4, 6 S36=5, 7

LAPM or hangup Do not use LAPM or async Async LAPM, MNP, or hangup MNP or hangup LAPM, MNP, or aysnc

MNP or async

seconds 0, 5–255 0 Sets the length of time in the off-line

command mode before the modem goes into standby mode. A value of zero prevents standby mode; a value of 1–4 sets the value to 5.

decimal 0–3, 6, 7 6 Selects the 56K digital loss if using the

modem thru a PBX line. The default value is

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

Value Digital loss

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

MultiModemDID User Guide

Result Codes

Chapter 4 - AT Commands, S-Registers, 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 Description

0OK 1 CONNECT 2 RING 3 NO CARRIER 4 ERROR 5 CONNECT 1200 * 6 NO DIALTONE 7 BUSY 8 NO ANSWER 10 CONNECT 2400 * 11 CONNECT 4800 * 12 CONNECT 9600 * 13 CONNECT 14400 * 14 CONNECT 19200 * 24 CONNECT 7200 * 25 CONNECT 12000 * 26 CONNECT 16800 * 40 CONNECT 300 * 55 CONNECT 21600 * 56 CONNECT 24000 * 57 CONNECT 26400 * 58 CONNECT 28800 * 59 CONNECT 31200 * 60 CONNECT 33600 * 70 CONNECT 32000 * 71 CONNECT 34000 * 72 CONNECT 36000 * 73 CONNECT 38000 * 74 CONNECT 40000 * 75 CONNECT 42000 * 76 CONNECT 44000 * 77 CONNECT 46000 * 78 CONNECT 48000 * 79 CONNECT 50000 * 80 CONNECT 52000 * 81 CONNECT 54000 * 82 CONNECT 56000 * 88 DELAYED 89 BLACKLISTED 90 BLACKLIST FULL

*When the extended result code configuration option is enabled, one of the following codes is

appended to the result code, 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

Command executed Modem connected to line Ring signal detected Carrier signal lost or not detected Invalid command Connected at 1200 bps No dial tone detected Busy signal detected No answer at remote end Connected at 2400 bps Connected at 4800 bps Connected at 9600 bps Connected at 14400 bps Connected at 19200 bps Connected at 7200 bps Connected at 12000 bps Connected at 16800 bps Connected at 300 bps Connected at 21600 bps Connected at 24000 bps Connected at 26400 bps Connected at 28800 bps Connected at 31200 bps Connected at 33600 bps Connected at 32000 bps, 56K rate Connected at 34000 bps, 56K rate Connected at 36000 bps, 56K rate Connected at 38000 bps, 56K rate Connected at 40000 bps, 56K rate Connected at 42000 bps, 56K rate Connected at 44000 bps, 56K rate Connected at 46000 bps, 56K rate Connected at 48000 bps, 56K rate Connected at 50000 bps, 56K rate Connected at 52000 bps, 56K rate Connected at 54000 bps, 56K rate Connected at 56000 bps, 56K rate Delay is in effect for the dialed number Dialed number is blacklisted Blacklist is full

MultiModemDID User Guide

Chapter 4 - AT Commands, S-Registers, Result Codes

100 CONNECT 28000 * 101 CONNECT 29333 * 102 CONNECT 30666 * 103 CONNECT 33333 * 104 CONNECT 34666 * 105 CONNECT 37333 * 106 CONNECT 38666 * 107 CONNECT 41333 * 108 CONNECT 42666 * 109 CONNECT 45333 * 110 CONNECT 46666 * 111 CONNECT 49333 * 112 CONNECT 50666 * 113 CONNECT 53333 * 114 CONNECT 54666 * 115 CONNECT 25333 * 116 CONNECT 26666 *

*When the extended result code configuration option is enabled, one of the following codes is append-

ed to the result code, 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

Connected at 28000 bps, 56K rate Connected at 29333 bps, 56K rate Connected at 30666 bps, 56K rate Connected at 33333 bps, 56K rate Connected at 34666 bps, 56K rate Connected at 37333 bps, 56K rate Connected at 38666 bps, 56K rate Connected at 41333 bps, 56K rate Connected at 42666 bps, 56K rate Connected at 45333 bps, 56K rate Connected at 46666 bps, 56K rate Connected at 49333 bps, 56K rate Connected at 50666 bps, 56K rate Connected at 53333 bps, 56K rate Connected at 54666 bps, 56K rate Connected at 25333 bps, 56K rate Connected at 26666 bps, 56K rate

MultiModemDID User Guide

Chapter 5 - 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 MT5634ZBA-DID modem 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 Multi-Tech modem.

1. Establish a data connection with a remote MT5634ZBA-DID modem.

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 then break the connection in the normal way.

CAUTION: If you hang up while you are in remote configuration mode, it may lock up the remote modem.

Setup

Multi-Tech modems are shipped with a default setup password (MTSMODEM). Because anyone who has an owner’s manual knows the default setup password, for security 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 Phone Tools or HyperTerminal.

2. In the terminal window, type AT#SMTSMODEM (or AT#Sxxxxxxxx if you have replaced the MTSMODEM password with xxxxxxxx) 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=xxxxxxxx, where xxxxxxxx stands for the password, and press ENTER. The password can include any keyboard character, and must be one 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.

Note: 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.

MultiModemDID User Guide

Chapter 5 - Remote Configuration

Changing the Remote Escape Character

To increase 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—but 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.”

2. Type ATS9=

press ENTER.

3. Save the new value by typing AT&W and pressing ENTER.

4. Type ATO<CR> to exit remote configuration.

, where n is the ASCII code for the new remote configuration escape character, then

MultiModemDID User Guide

Chapter 6 - Troubleshooting

Your modem was thoroughly tested at the factory before it was shipped. If you are unable to make a successful connection, or if you experience data loss or garbled characters during your connection, it is possible that the modem is defective. However, it is more likely that the source of your problem lies elsewhere. The following symptoms are typical of problems you might encounter:

•

None of the LEDs light when the modem is on.

•

The modem does not respond to commands.

•

The modem dials but is unable to make a connection.

•

The modem disconnects while online.

•

The modem cannot connect when answering.

•

The modem doesn’t work with Caller ID.

•

Fax and data software can’t run at the same time.

If you experience problems, please check the following possibilities before calling Technical Support (see

Appendix E).

None of the Indicators Light

When you plug in the modem, the Power LED should come on. After the operating system detects and configures the modem, the TR LED should come on.

•

If the Power LED does not come on, double check the cable connections.

•

If the TR LED does not come on, check to see that the software from the installation disk has been installed (see Chapter 2, Step 3).

The Modem Does Not Respond to Commands

•

Make sure you are issuing the modem commands from the data communications software, either manually in terminal mode or automatically by configuring the software. (You cannot send commands to the modem from the DOS prompt.)

•

Make sure you are in terminal mode in your data communications program, then type AT and press ENTER. If you get an OK response, your connections are good and the problem likely is in the connect setup in your communications software.

•

Try resetting your modem by unplugging the DID cable from the modem, and then plugging it back in.

•

Try rebooting the computer.

•

The modem might be defective. If you have another Multi-Tech modem, try swapping modems. If the problem goes away, the first modem is possibly defective. Call Tech Support for assistance (see Appendix E).

MultiModemDID User Guide

Chapter 6 - Troubleshooting

The Modem Dials But Cannot Connect

There can be several reasons the ZBA fails to make a connection. Possibilities include

•

lack of a physical connection to the telephone line.

•

a wrong dial tone.

•

a busy signal.

•

a wrong number.

•

no modem at the other end.

•

a faulty modem, computer, or software at the other end.

•

incompatibility between modems.

You can narrow the list of possibilities by using extended result codes. Extended result codes are enabled by default. If they have been disabled, enter ATV1X4 and press ENTER while in terminal mode, or include V1X4 in the modem’s initialization string. When you dial again, the modem will report the call’s progress.

•

If the modem reports to both the modem’s LINE jack (not the PHONE jack) and the telephone wall jack. If the cable looks secure, try replacing it. If that doesn’t work, the problem might be in your building’s telephone installation. To test the building installation, plug a telephone into your modem’s telephone wall jack and listen for a dial tone. If you hear a dial tone, your modem might be installed behind a company phone system (PBX) with an internal dial tone that sounds different from the normal dial tone. In that case, the modem might not recognize the dial tone and might treat it as an error. Check your PBX manual to see if you can change the internal dial tone; if you can’t, change your modem’s initialization string to replace X4 with X3, which will cause the modem to ignore dial tones (note, however, that X3 is not allowed in some countries, such as France and Spain).

•

If the modem reports BUSY, the other number might be busy, in which case you should try again later, or it might indicate that you have failed to add a 9, prefix to the phone number if you must dial 9 for an outside line.

If you must dial 9 to get an outside line, the easiest way to dial it automatically is to include it in the modem’s dial prefix, e.g., ATDT9,. Note the comma, which inserts a pause before the number is dialed. By inserting 9, into the dial prefix, you do not have to include it in each directory entry.

To change the dial prefix in Windows 98 HyperTerminal, select Call from the Call menu, click

Dialing Properties, and type 9 in the local and long distance boxes in How I dial from this location.

•

If the modem reports have dialed a wrong number. Check the number.

•

If the modem reports tion was made. You might have dialed a wrong number, and a person answered instead of a computer, or you might have dialed the correct number but the other computer or software was turned off or faulty. Check the number and try again, or try calling another system to make sure your modem is working. Also, try calling the number on your telephone. If you hear harsh sounds, then another modem is answering the call, and the modems might be having problems negotiating because of modem incompatibilities or line noise. Try connecting at a lower speed.

NO DIALTONE

NO ANSWER

NO CARRIER

, check that the modem’s telephone line cable is connected

, the other system has failed to go off-hook, or you might

, the phone was answered at the other end, but no connec-

MultiModemDID User Guide

The Modem Disconnects While Online

•

If you have Call Waiting on the same phone line as your modem, it can interrupt your connection when someone tries to call you. If you have Call Waiting, disable it before each call. In most telephone areas in North America, you can disable Call Waiting by preceding the telephone number with *70 (check with your local telephone company).

You can automatically disable Call Waiting by including the disabling code in the modem’s dial prefix (e.g., ATDT*70,—note the comma, which inserts a pause before the number is dialed). To change the dial prefix in Windows 98 HyperTerminal, select Call from the Call menu, click Dial- ing Properties, check This location has Call Waiting, and select the correct code for your phone service.

•

If you have extension phones on the same line as your modem, you or someone else can interrupt the connection by picking up another phone. If this is a frequent problem, disconnect the extension phones before using the modem, or install another phone line especially for the modem.

•

Check for loose connections between the modem and the computer and the telephone jack.

•

You might have had a poor connection because of line conditions or the problem might have originated on the other end of the line. Try again.

•

If you were online with an online service, it might have hung up on you because of lack of activity on your part or because you exceeded your time limit for the day. Try again.

Chapter 6 - Troubleshooting

The Modem Cannot Connect When Answering

•

Autoanswer might be disabled. Turn on autoanswer in your data communications program or send the command ATS0=1 (ATS0=2 if you have Caller ID service) to make sure your modem in terminal mode.

The Modem Doesn’t Work with Caller ID

•

Caller ID information is transmitted between the first and second rings, so if autoanswer is turned off (S0=0) or if the modem is set to answer after only one ring (S0=1), the modem will not receive Caller ID information. Check your initialization string, and if necessary change it to set the modem to answer after the second ring (S0=2).

•

Make sure that you have Caller ID service from your telephone company.

Fax and Data Software Can’t Run at the Same Time

•

Communications devices can be accessed by only one application at a time. In Windows 98, you can have data and fax communication applications open at the same time, but they cannot use the same modem at the same time.

MultiModemDID User Guide

DID T roubleshooting

•

Make sure that the MT5634ZBA-DID parameters match the DID line. Refer to the *D command. Also, verify that your fax software is configured to match the analog DID trunk line and the MT5634ZBA-DID parameters.

•

If callers are receiving an immediate busy signal or are allowed a short connection but become unexplectedly disconnected after a short time, try reversing the TIP and RING wires. The central office is sensitive to the DC polarity and this will reverse the polarity.

•

If the MT5634ZBA-DID line is out of service, verify that the DC voltage is being applied by the MT5634ZBA-DID to the DID line. This voltage should be applied to the line at all times, even when the PC is not in use. The central office will check the line occasionally and if a voltage is not sensed, the line may be put out of service. If this has occurred, call the phone company to get the line back in service. Be sure to have you DID line information available.

•

Note that the DID and POTS ports on the MT5634ZBA-DID can use only one port at a time since they share common circuitry within the modem.

•

If the MT5634ZBA-DID is totally inoperational, verify that the power supply shipped with modem is connected properly to the modem and the wall outlet.

Important: Use the power source shipped with your modem. If you use any other power source,

you could damage the MT5634ZBA-DID and void the warranty.

cannot

Chapter 6 - Troubleshooting

operate simultaneously. You

MultiModemDID User Guide

Appendix A – Regulatory Compliance

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. See installation instructions for details.

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 MultiTech 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: MultiModem Model Number: MT5634ZBA-DID FCC Registration No: AU7USA-25665-MM-E Ringer Equivalence No: 0.4B Modular Jack (USOC): RJ11C or RJ11W (single line) Service Center: Multi-Tech Systems, Inc.

2205 Woodale Drive Mounds View, MN 55112 U.S.A (763) 785-3500 Phone (763) 785-9874 Fax

MultiModemDID User Guide

Appendix A – Regulatory Compliance

FCC Part 15

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.

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 Any number of fax software packages can be used with this product. Refer to the fax software manual for setup details. Typically, the fax branding information must be entered via the configuration menu of the software.

fax branding

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.

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.

MultiModemDID User Guide

Appendix B – Technical Specifications

Your MultiModemZBA-DID fax modem meets the following specifications:

Trade Name Model Number

Fax

Standards: Super G3 V.34/33.6K bps; V.17/14.4Kbps, V.29, V.27ter, V.21, T.30,

Rates: 33.6K, 31.2K, 28.8K, 26.4K, 24K, 21.6K, 19.2K, 16.8K, 14.4K, 12K,

Error Correction: V.42, ECM Compression: MH (T.4), MR (T.4), & MMR (T.6) Conversion: Real time (on-the-fly) compression conversion Commands: Class 1, 2, 1.0, 2.0, 2.1 Service Types: Wink-start; immediate-start; delay dial Signaling Types: DTMF (1-7 digits accepted)

Data

Rates: V.92/56K, V.90/56K, enhanced V.34/33.6K & others Error Correction: V.42 & MNP® Data Compression: V.44, V.42bis, MNP® Class 5

Physical Description

Weight

Approvals

Modem Compatibility

Fax Compatibility

Flow Control Command Buffer Frequency Stability Receiver Sensitivity AGC Dynamic Range Cables

Environmental

Limited Warranty

MultiModem™ MT5634ZBA-DID

T.30 Annex A, T.30 Annex F, T.31, T.31 Annex B, T.32 Annex C, TR29.2 Class 2 Recommendation

9600, 7200, 4800, 2400, 300 bps

4.3" w × 1.0" h × 5.7" d; 8 oz (10.9 cm × 2.5 cm × 14.5 cm; 227g)

224 g (8 oz)

EMC: FCC Part 15 Class B Safety: UL, cUL, UL60950

Telecom: FCC Part 68, CS03 56K; ITU-T V.34 enhanced, V.34, V.32terbo, V.32bis, V.32, V.22bis,

V.22; Bell 212A and 103/113; ITU-T V.29, V.42, V.42bis; ITU-T V.21 & V.23 in international versions

ITU-T Group 3, Class 1 and 2, T.4, T.30, V.21, V.27ter, V.29, V.17, and TIA/EIA TR29.2

XON/XOFF (software), RTS/CTS (hardware) 40 characters ±0.01%

-43 dBm under worst-case conditions 43 dB Two RJ-11s (LINE jack and PHONE jack)

One RJ-12 (DID line) One DB9 (serial port) Note: Any cables connected to the computer should be shielded to reduce interference.

Temperature range 0°–50°C (32°–120°F); humidity range 20–90% (non-condensing)

10 years

MultiModemDID User Guide

Appendix C – Warranty and Service

Appendix C - W arranty and Repairs

Multi-Tech Systems, Inc. Warranty and Repairs Policies

Warranty

Multi-Tech Systems, Inc., (hereafter MTS) warrants that its products will be free from defects in material or workmanship for a period of two, five, or ten years (depending on model) from date of purchase, or if proof of purchase is not provided, two, five, or ten years (depending on model) from date of shipment.

MTS MAKES NO OTHER WARRANTY, EXPRESS OR IMPLIED, AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED.

This warranty does not apply to any products which have been damaged by lightning storms, water, or power surges or which have been neglected, altered, abused, used for a purpose other than the one for which they were manufactured, repaired by Customer or any party without MTSs written authorization, or used in any manner inconsistent with MTSs instructions.

MTSs entire obligation under this warranty shall be limited (at MTSs option) to repair or replacement of any products which prove to be defective within the warranty period or, at MTSs option, issuance of a refund of the purchase price. Defective products must be returned by Customer to MTSs factory  transportation prepaid.

MTS WILL NOT BE LIABLE FOR CONSEQUENTIAL DAMAGES, AND UNDER NO CIRCUMSTANCES WILL ITS LIABILITY EXCEED THE PRICE FOR DEFECTIVE PRODUCTS.

Repair Procedures for U.S. and Canadian Customers

In the event that service is required, products may be shipped, freight prepaid, to our Mounds View, Minnesota factory:

Multi-Tech Systems, Inc. 2205 Woodale Drive Mounds View, MN 55112 Attn: Repairs, Serial # ____________

A Returned Materials Authorization (RMA) is not required. Return shipping charges (surface) will be paid by MTS.

Please include, inside the shipping box, a description of the problem, a return shipping address (must have street address, not P.O. Box), your telephone number, and if the product is out of warranty, a check or purchase order for repair charges.

For out of warranty repair charges, go to www.multitech.com/documents/warranties Extended two-year overnight replacement service agreements are available for selected products.

Please call MTS at (888) 288-5470, extension 5308 or visit our web site at

http://www.multitech.com/programs/orc/ for details on rates and coverages.

Please direct your questions regarding technical matters, product configuration, verification that the product is defective, etc., to our Technical Support department at (800) 972-2439 or email

tsupport@multitech.com. Please direct your questions regarding repair expediting, receiving, shipping,

billing, etc., to our Repair Accounting department at (800) 328-9717 or (763) 717-5631, or email

mtsrepair@multitech.com.

Repairs for damages caused by lightning storms, water, power surges, incorrect installation, physical abuse, or user-caused damages are billed on a time-plus-materials basis.

MultiModemDID User Guide

Appendix C – Warranty and Service

Repair Procedures for International Customers (Outside U.S.A. and Canada)

Your original point of purchase Reseller may offer the quickest and most economical repair option for your Multi-Tech product. You may also contact any Multi-Tech sales office for information about the nearest distributor or other repair service for your Multi-Tech product.

http://www.multitech.com/COMPANY/offices/DEFAULT.ASP

In the event that factory service is required, products may be shipped, freight prepaid to our Mounds View, Minnesota factory. Recommended international shipment methods are via Federal Express, UPS or DHL courier services, or by airmail parcel post; shipments made by any other method will be refused. A Returned Materials Authorization (RMA) is required for products shipped from outside the U.S.A. and Canada. Please contact us for return authorization and shipping instructions on any International shipments to the U.S.A. Please include, inside the shipping box, a description of the problem, a return shipping address (must have street address, not P.O. Box), your telephone number, and if the product is out of warranty, a check drawn on a U.S. bank or your companys purchase order for repair charges. Repaired units shall be shipped freight collect, unless other arrangements are made in advance.

Please direct your questions regarding technical matters, product configuration, verification that the product is defective, etc., to our Technical Support department nearest you or email tsupport@multitech.com. When calling the U.S., please direct your questions regarding repair expediting, receiving, shipping, billing, etc., to our Repair Accounting department at

+(763) 717-5631 in the U.S.A., or email mtsrepair@multitech.com. Repairs for damages caused by lightning storms, water, power surges, incorrect installation, physical

abuse, or user-caused damages are billed on a time-plus-materials basis.

Repair Procedures for International Distributors

Procedures for International Distributors of Multi-Tech products are on the distributor web site.

http://www.multitech.com/PARTNERS/login/

MultiModemDID User Guide

Appendix D – Upgrading the Modem’s Firmware

Appendix D - Upgrading the Modem’ s

Firmware

Upgrade Overview

1. Identify your modem’s model number and firmware version.

2. Identify the current version of the firmware at the Multi-Tech Web site. If your modem already has current firmware, there is no need to install it.

3. Download the upgrade file and the appropriate Flash Wizard for your modem.

4. Install the Flash Wizard and extract the firmware .HEX file from you the file you downloaded.

4. If the firmware version number matches the firmware version number found in “Step 1: Identify the Modem Firmware,” you have the current firmware version and do not need to be update.

5. Document and clear your stored parameters.

6. Upgrade the firmware using the .HEX file and the Flash Wizard.

7. Restore your parameters. .

Step 1: Identify Your Modem‘s Number and Firmware

You must know the model number and firmware version of your Mult-Tech modem to know whether or not you should update it.

1. Run your favorite terminal program. If you are using Windows 95 or above, you can use Windows 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. If the modem does not respond with OK, repeat the AT&F command.

3. Now type ATI, press Enter. The model number and firware version should appear. Record these results.

Step 2: Indentify the Current Firware Version

1. Using your favorite Web browser, go to http://www.multitech.com/support/MultiModemZBA/ firmware.asp

2. Scroll down to your modem model number.

3. Look at the firmware version number for your modem.

4. If the firmware version number matches the firmware version number found in Step 1, you have the current firmware version and do not need to update.

5. If the firmware version is greater than the one found in Step 1, your modem has an older version of firmware. Continue with Step 6.

Warning: The first digit of the new firmware must match the first digit of the old firmware or the modem may not work properly. If your current version is 4.16, replace it only with 4.xx, not 6.xx.

Step 3: Download the Upgrade File

1. If you are not already at the MultiModemZBA Firmware page of the Multi-Tech Web site, follow the procedure in “Step 2: Identify the Current Firmware.”

2. Download the upgrade file for your modem by clicking its name, and save the file in a temporary folder on your hard disk.

3. In the same section of the Web page, click the Flash Wizard utility for your operating system to download it, and save it in the same folder.

MultiModemDID User Guide

Appendix D – Upgrading the Modem’s Firmware

Step 4: Extract the Upgrade Files

1. Install the Flash Wizard utility by double-clicking the file name in Windows Explorer.

2. Extract the upgrade files by double-clicking the file name. The extracted files include a .HEX file, which contains the upgrade data, and a Readme file.

3. Copy the upgrade .HEX file into the Flash Wizard folder, which, in a default installation, is at C:\Program Files\MultiTech Systems\Flash Wizard\.

Step 5: Clear Your Stored Parameters

Before you flash your modem, you should record the parameters that are currently stored in it, so you can reprogram it after flashing. After you have recorded them, send the AT&W1Z command to the modem to clear the stored parameters.

1. Run your favorite terminal program. If you are using Windows 95 or above, you can use Windows HyperTerminal.

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. Type AT&W1Z and press ENTER to clear your stored parameters and reset your modem to factory default.

5. Close the terminal program.

Step 6: Upgrade the Modem’s Firmware

Before you begin the following procedure, read the README.TXT file extracted from the upgrade archive file. Note the file name for the new firmware (example: ARQG125A.HEX).

Warning: Never install an older version of firmware over a newer version. Doing this WILL DESTROY THE FLASH PROM! If the flash PROM is destroyed, the modem must be sent in for repair.

1. Run Flash Wizard by double-clicking its icon or file name, or by selecting it from the Start menu. The Identifying Devices dialog box is displayed as Flash Wizard locates and identifies the devices connected to your system.

Note: If the message turned on and that all cables are correctly and securely attached.

2. Click the modem to be upgraded, and then click Next to proceed.

3. Select the port to be upgraded from the Port list, select the appropriate .HEX file from the Hex

File list, and then click Next to continue. Note: Do not use FLASHLDR.HEX. This file is used internally by Flash Wizard.

4. The Progress dialog box appears, showing a status bar that indicates the progress of the up- grade.

Caution: Any disruption of the program during this stage of the upgrade can cause your modem to become inoperable. Wait for the Next button to become active before proceeding.

5. When the flash upgrade is complete, the message to continue.

6. The Results dialog box appears next. Click Finish to exit Flash Wizard.

ERROR: No valid devices detected

Programming Complete

is displayed, verify that the modem is

appears. Click Next

Step 7: 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 the terminal window and pressing ENTER.

MultiModemDID User Guide

Appendix E – Installng a Modem Under Linux

Appendix E - Installing a Modem Under

Linux

Introduction

This appendix explains how to install a modem on a computer operating under the Red Hat Linux 6.2 operating system. Other versions of Red Hat and other Linux operating systems should be similar. Briefly, in Linux, you do not need drivers for most standard external modems and most internal ISA bus modems. Programs in Linux commonly call upon the port, rather than the modem.

Standard Linux Serial Port Definitions

PC port Linux port Com1 ttyS0 Com2 ttyS1 Com3 ttyS2 Com4 ttyS3

Installation

Connect the external modem to an available serial port.

Setup

This section describes how to make sure Linux can talk to the modem and be able to dial up to the Internet. Linux can use different programs and desktops depending on who made the Linux operating system and what version it is. The following procedures use the most commonly installed components of Red Hat

6.2. More information can be found in your Linux OS owner’s manual.

Using the Terminal Program Minicom to Verify Operation

1. At the command prompt, type minicom –s and press ENTER.

2. Select Serial port setup and press ENTER.

3. From Serial port setup, use the A key to access Serial Device, and then press ENTER.

4. Press ESC.

5. You are now in the Minicom terminal. Type AT and press ENTER. The screen should display OK to

verify the operation. Alternately, dial a phone number to verify line operation

6. To leave Minicom, press CTRL + A, and then press Z.

7. On the help menu, press X to exit.

Using the Modem to Call the Internet

Linux allows different graphic user interfaces (GUI). In the following steps, we’ll use the Gnome Desktop GUI and assume that the Internet Service Provider (ISP) you are calling assigns you the Domain Name Service (DNS) and Internet Protocol (IP) addresses. For more information on DNS or IP, see the Linux OS owner’s manual or contact your ISP.

1. On the Task Bar at the bottom of the screen, select the Gnome Footprint.

2. Select Internet from the menu.

3. Select Dialup Configuration Tool.

4. Select Add, and then click Next.

5. Enter the connection name and phone number, and then click Next.

6. Enter your user name and password, and then click Next.

7. Select Normal ISP if your ISP is not listed, and then click Next.

8. Click Finish.

MultiModemDID User Guide

Appendix E – Installng a Modem Under Linux

Calling the ISP

1. On the Task Bar at the bottom of the screen, select the Gnome Footprint.

2. Select Internet from the menu.

3. Select RH PPP Dialer.

4. Select the connection name you entered in step 5 of the previous section.

5. Click OK.

Answering Calls

To use the system for answering calls, Linux requires other programs to be installed, such as Mgetty, Mgetty+Sendfax, and others, depending on your requirements. Each vendor of Linux has more than adequate information on installing these programs.

MultiModemDID User Guide

Appendix F – Technical Support

Appendix F - Technical Support

Multi-Tech Systems, Inc. has an excellent staff of technical support personnel available to help you get the most out of your Multi-Tech product. If you have any questions about the operation of this unit, please call or email Multi-Tech at the following:

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 support@multitech.com (800) 972 -2439 Rest of the World support@multitech.com +(763) 717-5863

Please have modem information available when calling.

Internet Sites

Multi-Tech maintains a Web site and an FTP site at:

http://www.multitech.com ftp://ftp.multitech.com

MultiModemDID User Guide

Index

Symbols

11-bit mode 23 56K operation

digital loss when used with

PBX 38 disabling the auto rate 38 maximum connect speed 37

abort timer 36 Adaptive Answer Result Code

Enable command 22

Answer command 14 assembling the modem 7 Asynchronous Communications

Mode command 18

Asynchronous Word Length

command 23

AT Command Control command

AT command speed 23 AT commands 13–56

$D 23 $EB 23 $SB 23 %%%AT 31 %A 22 %B 22 %C 22 %DC 22 %E 22 %H 22 %R 23 %S 23 &C 17 &D 18 &E 18 &F 18 &G 18 &K 18 &Q 18 &S 19 &T 19 &V 19 &W 19 &Z= 19 *DD 33 *DF 34 *DN 33

*DS 32 *DT 33 *DW 33 +++AT 31 +DCS= 23 +DR= 24 +DS44= 24 +ES= 25 +MS= 26 +MS=? 24, 26 +MS? 24, 26 +PCW= 28 +PIG= 28 +PMH= 28 +PMHF 28 +PMHR= 29 +PMHT= 29 +PQC= 30 +VCID= 30 +VDR= 30

-C 21 \A 19 \B 20 \K 20 \N 21 \Q 21 \T 21 \V 21 \X 21 A 14 A/ 14 AT 14 B 14 D 14 definition 13 descriptions 14–56 disabling modem response to

commands 22 DS= 15 E 15 F 15 format 13 H 15 I 15 M 16 N 16 O 16 P 16 Q 16 S= 16 S? 16 T 17 V 17 W 17

X 17

Z 17 attention code 14 autoanswer 13, 36, 45

backspace character, setting

36 Bell 212A mode 14 blacklisting 22 Break Control command 20 break signal 20 Busy-Out Functions 33 Busy-Out Timer at End of Call

Call Waiting 45 call waiting 28 Call Waiting Enable command

28 callback security 22

displaying settings 19

storing a dialing command 19 Caller ID 30, 36, 45 Caller ID Selection command

30 carriage return character 36 carrier loss disconnect time,

setting 36 CD delay timer 36 Changing the Setup Password

41 Cisco Configuration command

23 comma, setting pause time 36 command mode 13 command speed 23 Command Speed Response

command 23 command string 13 communication programs 13 Communication Standard com-

mand 14 communications programs 43 compression, data 24 configuration, storing a 19 connect messages 39 connecting the modem 7 country code, displaying 15

MultiModemDID User Guide

Index

data buffering 18 data calling tone 36 Data Calling Tone command 21 Data Carrier Detect command

17 data compression 23, 24 Data Compression Control

command 22 data mode 13, 16 Data Set Ready Control com-

mand 19 Data Terminal Ready command

18 DC polarity 11 DC voltage 11 DCD Control command 17 default settings 18 delay timer 36 diagnostic information, displaying

15 Dial command 14 Dial Stored Telephone Number

command 15 dial string modifiers 14 Dial-Up Networking 12–56 dialing tones 36 Digit Format *DD 33 Direct Connect Enable command

22 Direct Inward Dialing Operation

11 disconnect delay 36 Display Current Settings com-

mand 19 Distinctive Ring command 30 driver installation 8 DSR Control command 19 DTR (Data Terminal Ready)

Control command 18 DTR Dialing command 23

Echo Command Mode Charac-

ters command 15 Echo Online Data Characters

command 15 Enable Synchronous Buffered

Mode command 25 ENTER key 14 error control, setting 37, 38

Error Correction Mode Selection

command 21 escape character 36 escape sequence 13, 31

fallback 16 Fallback and Fall Forward

command 22 FCC regulations 47–56 Features 5 firmware

version 15 flash 28 Flash Wizard upgrade utility 52 flow control 18, 21 Flow Control Selection command

18, 21

Format for Reporting Incoming

DID Number 34

Guard Tone Control command

H.324 video 25 handshake 16 hangup command 15 hangup delay 36 Hook Control command 15

inactivity timer 36 Inactivity Timer command 21 indicators 43 Information Request command

Initialization Recommendations

32 initialization strings 13, 44 installing the modem driver 8 Internet Connection 12

LED indicators 10, 43 line connection 8 line feed character 36 Load Factory Settings command

messages 39–56 MNP 5 data compression 22 MNP error correction 21 modem driver installation 8 Modem on Hold 28, 29 Modem on Hold Enable com-

mand 28

Modem on Hold Initiate com-

mand 29

Modem on Hold Timer command

29 Modem Reset command 17 Modulation Handshake command

16 Modulation Selection command

26 Monitor Speaker Mode command

Number of DID Digits Expected

on-hook/off-hook 15

pause time for comma, setting

36 PCM Upstream 11 PCM Upstream Ignore command

28 power source, important note

46 Protocol Result Code command

21 Pulse Dialing command 16

Quick Connect 11, 30 Quick Connect Control command

rate, maximum data 37 Read Register Value command

16 Regulatory compliance 47

MultiModemDID User Guide

Index

remote configuration 41

escape character 36, 42

escape sequence 31 remote node operation 12 Removing a modem from Win-

dows 8 Repeat command 14 required equipment 6 resetting the modem 17, 18 Result Code Format command

17 Result Code Options command

17 Result Code Selection command

17 result codes 13, 21, 39–

56, 44 Result Codes Enable/Disable

command 16 Return Online to Data Mode

command 16 rings, setting number of 36 ROM checksum 15

S-registers 36–56

reading 16 S0 36 S1 36 S2 36 S3 36 S4 36 S5 36 S6 36 S7 36 S8 36 S9 36 S10 36 S11 36 S18 36 S28 36 S30 36 S35 36 S36 37 S37 37 S38 37 S42 38 S48 38 S89 38 S108 38

setting 16 Safety 6 Safety Warning Telecom 6

Select Maximum MNP Block Size

command 19

Select V.44 Data Compression

command 23 serial port 23 Serial Port Baud Rate command

23 Set Register Value command

16 Setup Password 41 setup password 41 solving problems 43 Speaker Mode command 16 specifications, technical 49 speed

maximum 37 serial port 23

speed conversion (data buffer)

18 standby mode delay time 38 Start Protocol *DS 32 Store Current Configuration

command 19 Store Dialing Command 19 synchronous buffered mode 25

technical specifications 49 telephone line 44 terminal mode 43 testing the modem 8, 19, 44 Tone Dialing command 17 tones, dialing 36 Transmit Break command 20 troubleshooting 43 Troubleshooting DID 46

Uninstalling a modem from

Windows 8 upstream mode 28

V.22 mode 14 V.22bis Guard Tone Control

command 18 V.25 data calling tone 21, 36 V.34 modulation, enabling 36 V.42 error correction 21 V.42bis data compression 22 V.44 data compression 24

V.44 Data Compression com-

mand 24

V.44 Data Compression Report-

ing command 24 V.54 tests 19 V.92 mode 11, 26, 28, 29, 30 V.92 Modem Hook Flash com-

mand 28 video 25 View Numbers in Blacklist

command 22

Wait for Digit Time-Out Time

command 33 wait time for dial tone 36 warranty 47 Windows 2000, uninstalling a

modem 9 Windows 95, uninstalling a

modem 8 Windows 98, uninstalling a

modem 8

XON/XOFF Pacing Control

command 18 XON/XOFF Pass-Through

command 21

Multi-Tech Systems MT5634ZBA User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

Chapter 1 - Introduction and Description

Introduction

Features

We Supply

Safety

Chapter 2 - Installation

Step 1: Assemble the Modem

Step 2: Connect the Modem to Your System

Step 3: Install the Modem Driver

Removing Your Old Modem from Windows

Chapter 3 - Operation

Front Panel of the MultiModemDID Modem

DID Operation

V.92 Operation

Connecting to the Internet

Dial-Up Networking

command mode

AT Commands

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

Store Dialing Command

Command: +DCS= Values:

Command: +DR=nV.44 Data Compression Reporting Values: Default: 0 Description: Enables or disables the V.44 data compression report. If the

Command: +DS44= Values: See description Default: See description Description: Controls the V.44 data compression function.

V.44 Data Compression

Command: +ES=nEnable Synchronous Buffered Mode Values: Default: None Description: Allows an H.324 video application direct access to the

+MS=[

V.92 Commands

Command: +PCW=nCall Waiting Enable Values: Default: 2 Description: Controls the action to be taken upon detection of a call waiting

Command: +PIG=nPCM Upstream Ignore Values: Default: 1 Description: Controls the use of PCM upstream during V.92 operation. PCM

Command: +PMH=nModem on Hold Enable Values: Default: 1 Description: Controls if modem on hold procedures are enabled during V.92

Command: +PMHR=nModem on Hold Initiate Values: Default: 0 Description: +PMHR is an action command that causes the modem to

Command: +PMHT= Values: Default: 0 Description: Determines if the modem will accept a V.92 Modem on Hold

Command: +PQC=nQuick Connect Control Values: Default: 3 Description: Controls the V.92 shortened Phase 1 and Phase 2 startup

Other Commands

Command: +VCID=nCaller ID Selection Values: Default: 0 Description: Enables Caller ID detection and configures the reporting and

Command: +VDR= Values:

command) while remaining online. Type +++AT and up to six

DID Commands

MT5634ZBA-DID Initialization Recommendations

Command: *DN Number of DID Digits Expected Values: 0-7 Default: 0 Description: This command is used to configure the modem for the

About the Busy-Out Features and Functions

Command: *DF Format for Reporting Incoming DID Number Values: 0, 1, 2 Default: 0 Description: This command allows for three different reporting formats of

S-Registers

S-registers

S108

Result Codes

Chapter 5 - Remote Configuration

Basic Procedure

Setup

Changing the Setup Password

Chapter 6 - Troubleshooting

None of the Indicators Light

The Modem Does Not Respond to Commands

The Modem Dials But Cannot Connect

The Modem Disconnects While Online

The Modem Cannot Connect When Answering

DID T roubleshooting

FCC Part 68 Telecom

FCC Part 15

Fax Branding Statement

Canadian Limitations Notice

Industry Canada

Appendix C - W arranty and Repairs

Appendix F - Technical Support

Index

Index

Symbols