ZyXEL Omni 56K Smart User Manual

Omni 56K Smart

Fax/Data Modem

User's Guide

Version 1.0

August 2002

Omni 56K Smart User’s Guide

Copyright

Copyright (c) 2002 by ZyXEL Communications Corporation.

The contents of this publication may not be reproduced in any part or as a whole, transcribed, stored in a
retrieval system, translated into any language, or transmitted in any form or by any means, electronic,
mechanical, magnetic, optical, chemical, photocopying, manual, or otherwise, without the prior written
permission of ZyXEL Communications Corporation.

Published by ZyXEL Communications Corporation. All rights reserved.

Disclaimer

ZyXEL does not assume any liability arising out of the application or use of any products, or software
described herein. Neither does it convey any license under its patent rights nor the patent rights of others.
ZyXEL further reserves the right to make changes in any products described herein without notice. This
publication is subject to change without notice.

Trademarks

ZyNOS (ZyXEL Network Operating System) is a registered trademark of ZyXEL Communications, Inc.
Other trademarks mentioned in this publication are used for identification purposes only and may be
properties of their respective owners.

ii Copyright

Omni 56K Smart User’s Guide

ZyXEL Limited Warranty

ZyXEL warrants to the original end user (purchaser) that this product is free from any defects in materials or
workmanship for a period of up to two years from the date of purchase. During the warranty period, and upon
proof of purchase, should the product have indications of failure due to faulty workmanship and/or materials,
ZyXEL will, at its discretion, repair or replace the defective products or components without charge for
either parts or labor, and to whatever extent it shall deem necessary to restore the product or components to
proper operating condition. Any replacement will consist of a new or re-manufactured functionally
equivalent product of equal value, and will be solely at the discretion of ZyXEL. This warranty shall not
apply if the product is modified, misused, tampered with, damaged by an act of God, or subjected to
abnormal working conditions.

Note

Repair or replacement, as provided under this warranty, is the exclusive remedy of the purchaser. This
warranty is in lieu of all other warranties, express or implied, including any implied warranty of
merchantability or fitness for a particular use or purpose. ZyXEL shall in no event be held liable for indirect
or consequential damages of any kind of character to the purchaser.

To obtain the services of this warranty, contact ZyXEL's Service Center for your Return Material
Authorization number (RMA). Products must be returned Postage Prepaid. It is recommended that the unit be
insured when shipped. Any returned products without proof of purchase or those with an out-dated warranty
will be repaired or replaced (at the discretion of ZyXEL) and the customer will be billed for parts and labor.
All repaired or replaced products will be shipped by ZyXEL to the corresponding return address, Postage
Paid. This warranty gives you specific legal rights, and you may also have other rights that vary from country
to country.

Online Registration

Don't forget to register your ZyXEL product (fast, easy online registration at www.zyxel.com) for free future
product updates and information.

Limited Warranty iii

Omni 56K Smart User’s Guide

Customer Support

Please have the following information ready when you contact customer support.

• Product model and serial number.

• Warranty Information.

• Date that you received your device.

• Brief description of the problem and the steps you took to solve it.

METHOD

LOCATION

WORLDWIDE

AMERICA

[e-mail]

[e-mail]

[e-mail]

[e-mail] [phone]

[e-mail]

[e-mail] [phone] www.zyxel.dk SCANDINAVIA

[e-mail]

[e-mail] [phone] www.zyxel.de GERMANY

[e-mail]

[e-mail] [phone] www.zyxel.com.my MALAYSIA

[e-mail]

E-MAIL

SUPPORT/SALES

[phone] ftp.europe.zyxel.com

[phone] ftp.zyxel.com

[phone] ftp.zyxel.dk

[phone]

[phone]

TELEPHONE/FAX WEB SITE/ FTP SITE REGULAR MAIL

[phone] www.zyxel.com

www.europe.zyxel.com

www.zyxel.com NORTH

800-255-4101

ZyXEL Communications Corp., 6
Innovation Road II, Science­Based Industrial Park, Hsinchu,
300, Taiwan

ZyXEL Communications Inc.,
1650 Miraloma Avenue,
Placentia, CA 92870, U.S.A.

ZyXEL Communications A/S,
Columbusvej 5, 2860 Soeborg,
Denmark

ZyXEL Deutschland GmbH.
Adenauerstr. 20/A4 D-52146
Wuerselen, Germany

Lot B2-06, PJ Industrial Park,
Section 13, Jalan Kemajuan,
46200 Petaling Jaya Selangor
Darul Ehasn, Malaysia

iv Customer Support

Omni 56K Smart User’s Guide

Table of Contents

Copyright ...........................................................................................................................................................ii

ZyXEL Limited Warranty................................................................................................................................ iii

Customer Support .............................................................................................................................................iv

List of Figures................................................................................................................................................ viii

List of Tables ....................................................................................................................................................ix

Preface ...............................................................................................................................................................x

Chapter 1 Getting To Know Your Modem .................................................................................................... 1-1

1.1 The Omni 56K Smart Modem........................................................................................................1-1

1.2 Features of the Omni 56K Smart Modem ...................................................................................... 1-1

Chapter 2 Installation ..................................................................................................................................... 2-1

2.1 Panel Descriptions.......................................................................................................................... 2-1

2.1.1 Front Panel LEDs................................................................................................................... 2-1

2.1.2 Back Panel.............................................................................................................................. 2-1

2.2 Connecting Your Omni 56K Smart (RS-232 Port) ........................................................................ 2-2

2.2.1 Driver Installation .................................................................................................................. 2-3

2.3 TCP/IP Setup.................................................................................................................................. 2-5

2.3.1 Installing TCP/IP in Windows 95/98/Me............................................................................... 2-5

2.3.2 Configuring TCP/IP in Windows 95/98/Me........................................................................... 2-6

2.3.3 Configuring TCP/IP in Windows NT/2000/XP ..................................................................... 2-6

2.4 Dial-Up Networking....................................................................................................................... 2-7

2.5 Installing Bitware From the Included CD ...................................................................................... 2-7

Chapter 3 Specifications & Functions............................................................................................................ 3-1

3.1 Specifications ................................................................................................................................. 3-1

3.2 Hardware Specification.................................................................................................................. 3-1

Table of Contents v

Omni 56K Smart User’s Guide

3.3 Firmware Specification................................................................................................................... 3-1

3.4 Protocol Support .............................................................................................................................3-2

3.5 Omni 56K Smart Capability ...........................................................................................................3-3

3.6 Data Function..................................................................................................................................3-4

3.6.1 Physical Layer Capability .......................................................................................................3-4

3.7 Flow Control...................................................................................................................................3-5

3.8 Hardware CTS/RTS Flow Control..................................................................................................3-5

3.9 Software XON/XOFF Flow Control...............................................................................................3-5

3.10 Error Control...................................................................................................................................3-6

3.11 Data Compression...........................................................................................................................3-6

3.12 Repeat Dial .....................................................................................................................................3-6

3.13 Caller Number Delivery (Caller ID) ...............................................................................................3-6

3.14 Distinctive Ring ..............................................................................................................................3-9

3.15 Fax function ....................................................................................................................................3-9

3.15.1 Fax Physical Layer Protocol ...................................................................................................3-9

3.15.2 EIA Class 1/Class 2 & Class 2.0 Command Sets..................................................................3-10

3.15.3 ITU-T T.30 Fax Protocol......................................................................................................3-10

Chapter 4 Result Codes...................................................................................................................................4-1

4.1 Result Codes ...................................................................................................................................4-1

Chapter 5 Command Sets ...............................................................................................................................5-1

5.1 Data command sets .........................................................................................................................5-1

5.1.1 Basic AT Command Sets ........................................................................................................5-1

5.1.2 Extended AT& Command Sets...............................................................................................5-4

5.1.3 Extended AT* Command Sets................................................................................................5-8

5.1.4 Extended AT# Command Sets..............................................................................................5-10

5.2 Fax command sets.........................................................................................................................5-10

5.2.1 Service Class 1 Commands...................................................................................................5-10

vi Table of Contents

Omni 56K Smart User’s Guide

5.2.2 Service Class 2 Commands.................................................................................................. 5-11

5.2.3 Service Class 2.0 Commands............................................................................................... 5-17

5.3 S-Register Descriptions................................................................................................................ 5-20

5.3.1 Basic S-Registers "ATSn=x"................................................................................................ 5-20

5.3.2 Extended S-Registers "ATSn=x" ......................................................................................... 5-21

Chapter 6 Troubleshooting............................................................................................................................. 6-1

Index .................................................................................................................................................................A

Table of Contents vii

Omni 56K Smart User’s Guide

List of Figures

Figure 2-1 Omni 56K Smart Rear Panel and Connections .............................................................................2-2

Figure 2-2 Windows 98 Add New Hardware Wizard.....................................................................................2-3

Figure 2-3 Windows Me Add New Hardware Wizard ...................................................................................2-4

Figure 2-4 Windows 2000 Found New Hardware Wizard .............................................................................2-4

Figure 2-5 Windows XP Hardware Update Wizard .......................................................................................2-5

Figure 2-6 Bitware Master Setup....................................................................................................................2-7

viii List of Figures

Omni 56K Smart User’s Guide

List of Tables

Table 2-1 Front Panel LEDs for Omni 56K Smart ........................................................................................ 2-1

Table 2-2 Back Panel Description.................................................................................................................. 2-1

Table 3-1 Hardware Specifications................................................................................................................ 3-1

Table 3-2 Firmware Specifications................................................................................................................ 3-2

Table 3-3 Feature Description........................................................................................................................ 3-4

Table 3-4 Physical Layer Capacity ................................................................................................................ 3-4

Table 3-5 Different Ring Types in Register S40............................................................................................ 3-9

Table 3-6 Fax Physical Layer Capacity ....................................................................................................... 3-10

Table 4-1 Result Codes.................................................................................................................................. 4-1

Table 5-1 Basic AT Command Sets............................................................................................................... 5-1

Table 5-2 AT Command Sets Requiring an "AT" Prefix............................................................................... 5-1

Table 5-3 Extended AT& Command Sets...................................................................................................... 5-4

Table 5-4 Extended AT* Command Sets....................................................................................................... 5-8

Table 5-5 Extended AT# Command Sets..................................................................................................... 5-10

Table 5-6 Service Class 1 Commands.......................................................................................................... 5-10

Table 5-7 The Value of <MOD> Parameters............................................................................................... 5-11

Table 5-8 Service Class 2 Command Syntax............................................................................................... 5-11

Table 5-9 Service Class 2 Commands Supported Commands (per TIA PN2388 8/20/90).......................... 5-12

Table 5-10 Class 2 Command Responses......................................................................................................... 5-16

Table 5-11 Service Class 2.0 Commands..................................................................................................... 5-17

Table 5-12 Basic S-Registers "ATSn=x"..................................................................................................... 5-20

Table 5-13 Extended S-Registers "ATSn=x"............................................................................................... 5-22

Table 6-1 Troubleshooting............................................................................................................................. 6-1

List of Tables ix

Omni 56K Smart User’s Guide

Preface

Thank you for purchasing the ZyXEL Omni 56K Smart modem.

Register your modem online at www.zyxel.com for free future product updates and

information.

About This User's Guide

This manual is designed to guide you through the installation and configuration of your modem.

Related Documentation

Supporting Disk

More detailed information and examples can be found in the included disk (as well as on the zyxel.com web
site).

Quick Start Guide

The Quick Start Guide is designed to help you get up and running right away. It contains a detailed, easy-to­follow connection diagram, and information on configuring for Internet access.

ZyXEL Glossary and Web Site

Please refer to www.zyxel.com for an online glossary of networking terms and additional support
documentation.

Syntax Conventions

“Enter” means for you to type one or more characters and press the carriage return. “Select” or “Choose”
means for you to select one predefined choice.

For brevity's sake, we will use "e.g." as shorthand for "for instance" and "i.e." for "that is" or "in other words"
throughout this manual.

The Omni 56K Smart may be referred to as the modem or the device in this manual.

x Preface

Omni 56K Smart User’s Guide

Chapter 1

Getting To Know Your Modem

This chapter introduces you to the features and specifications for the ZyXEL Omni 56K Smart

modem.

1.1 The Omni 56K Smart Modem

The Omni 56K Smart is analog Data/Fax modem used for Internet access via telephone wire. The modem
can run upstream maximum rates of 33.6 kilobits per second (Kbps) and downstream rates of 56Kbps. The
actual rate depends on the line quality, the distance to the exchange and server side configuration.

1.2 Features of the Omni 56K Smart Modem

ZyDAS Sixth Generation Data Pump with V.90 Capability

The Omni 56K Smart modem complies with the V.90 standard for data communications. This means that
your modem is able to communicate at 56K on data communications originating from your service provider.

Microsoft Windows 95/98/2000/Me/XP: RS-232 Plug and Play Compatible

Your modem provides the convenience of simply being connected to the serial port on your computer. The
serial port is a dedicated communications port and allows for optimum data speeds between your computer
and modem.

V.34bis 33.6K Data Transmission Rate

Upstream communication rates of up to 33.6K are possible with the V.34bis protocol. The Omni 56K Smart
modem complies to the V.34bis protocol and this provides an effective transmission speed of 33.6K when
connection is made to a service provider that utilizes the same protocol.

Automatic Data/Fax Call Detection

The Omni 56K Smart modem can automatically answer an incoming call and ascertain whether that call is a
data or a fax call.

Getting to Know Your Modem 1-1

Omni 56K Smart User’s Guide

G3 14.4Kbps Fax Send/Receive

Your modem supports the V.17 fax standard that will allow for fax speeds of up to 14400 bps when
transmitting to another V.17 fax machine. When connecting to an earlier G3 fax device, your modem
operates at speeds up to 9600.

Support Fax Class 1, Class 2 and Class 2.0 Command Set

The fax facilities as offered on the Omni 56K Smart modem provides full compatibility with the class 1, class
2 and class 2.0 command sets. This compatibility means that your fax modem is fully configurable with a
wider range of options that can be optimized if need be.

Data Compression and Error Correction

Data compression is utilized to reduce the number of bits actually sent and received. This saves on the actual
amount of data being sent and therefore increases the modem's speed (or throughput). Error correction
protocols are used so that the compressed data can be accurately decompressed on the receiving end.

Omni 56K Smart modem supports V.42bis and MNP5 data compression protocols as well as MNP4/V.42
error correction. MNP5 is used with MNP4 error control; V.42bis is used with V.42 error control. The
compression efficiency of V.42bis is generally higher than that of MNP5.

1-2 Getting To Know Your Modem

Omni 56K Smart User’s Guide

Chapter 2

Installation

This chapter guides you through the installation process for your modem.

2.1 Panel Descriptions

2.1.1 Front Panel LEDs

The descriptions of the front panel LEDs are listed below:

Table 2-1 Front Panel LEDs for Omni 56K Smart

LED FUNCTION STATUS DESCRIPTION

OH Hook Status ON

OFF

PWR Power Status ON

OFF

The modem is off hook.
The modem is on hook.

The modem is on and receiving power.
The modem is off or not receiving power.

2.1.2 Back Panel

Table 2-2 Back Panel Description

LABEL DESCRIPTION

AC IN This receptacle is the power input socket and is used to plug the power adapter into

the modem.

RS-232 This serial port DB-9 female connector is used to plug the RS-232 cable from serial

port of a DTE or computer.

LINE Connect this analog RJ-11 port to a wall phone jack.

Installation 2-1

Omni 56K Smart User’s Guide

Figure 2-1 Omni 56K Smart Rear Panel and Connections

2.2 Connecting Your Omni 56K Smart (RS-232 Port)

Step 1. Use telephone wire to connect the modem to a wall phone jack.

Step 2. Use the RS-232 cable to connect the modem to your computer’s serial port.

Step 3. Use the included power adapter to connect your modem to a power outlet.

Step 4. Turn on your modem and then turn on your computer and insert the included CD.

2-2 Installation

Omni 56K Smart User’s Guide

2.2.1 Driver Installation

Windows automatically starts an installation wizard when it detects new hardware. Use the wizard to select
the driver on your included CD. Browse to D:\Drivers\Omni56KSmart (where D: is your CD-ROM drive),
and click Next or OK.

Click Yes or Continue Anyway if a warning screen appears.

Restart your computer if prompted. If Windows does not automatically detect your modem, make sure that
the modem is connected and turned on. Then restart your computer or use the add new hardware option in
Control Panel to start the installation wizard. Browse on the CD to the location described above.

Figure 2-2 Windows 98 Add New Hardware Wizard

Installation 2-3

Omni 56K Smart User’s Guide

Figure 2-3 Windows Me Add New Hardware Wizard

Figure 2-4 Windows 2000 Found New Hardware Wizard

2-4 Installation

Omni 56K Smart User’s Guide

Figure 2-5 Windows XP Hardware Update Wizard

Click Yes or Continue Anyway if a warning screen appears.

Restart your computer if prompted.

If Windows does not automatically detect your modem, make sure that the modem is connected and turned
on. Then restart your computer or use the add new hardware option in Control Panel to start the installation
wizard. Browse on the CD to the location described above.

2.3 TCP/IP Setup

2.3.1 Installing TCP/IP in Windows 95/98/Me

Click Start, Settings, Control Panel and double-click the Network icon.

Installation 2-5

Omni 56K Smart User’s Guide

Click Add in the Network window Configuration tab.

Select Protocol and then click Add.

Select Microsoft from the list of manufacturers.

Select TCP/IP from the list of network protocols and then click OK.

2.3.2 Configuring TCP/IP in Windows 95/98/Me

In the Network window Configuration tab, select your network adapter’s TCP/IP entry and click
Properties.

Click the IP Address tab. If your ISP gave you an IP address, select Specify an IP address and enter your IP
address and subnet mask. Otherwise, click Obtain an IP address automatically.

Click the DNS Configuration tab. Select Enable DNS, enter your Host name, Domain name, and the DNS
of your ISP, then click OK.

Click the Gateway tab. Highlight any installed gateways and click Remove until none are listed.

Click OK to save and close the TCP/IP Properties window.

Click OK to close the Network window.

Restart your computer if prompted. Insert the Windows CD if prompted.

2.3.3 Configuring TCP/IP in Windows NT/2000/XP

From the Control Panel, click Network and Dial-up Connections (Network Connections in XP) and
right-click your modem’s icon and click Properties.

Select Internet Protocol (TCP/IP) (under the General tab in Win XP) and click Properties.

The Internet Protocol TCP/IP Properties window opens. If your ISP gave you an IP address, select Use

the following IP address: and enter your IP address, subnet mask and default gateway: then select Use the
following DNS server addresses. Otherwise, select Obtain an IP address automatically and Obtain DNS
server automatically.

Click Advanced and remove any installed gateways in the IP Settings tab, then click OK.

Click OK to save and close the TCP/IP Properties window.

Click OK to close the Network window.

Restart your computer if prompted. Insert the Windows CD if prompted.

2-6 Installation

Omni 56K Smart User’s Guide

2.4 Dial-Up Networking

Fill in the wizard screens with information from your ISP to create a new dial-up connection.

Windows 98: Click Start, Programs, Accessories, Communications, Dial-Up Networking.

Double-click the Make New Connection icon.

Windows 2000/Me: Click Start, Settings, Network and Dial-Up Connections, Make New Connection.

Windows XP: Click start, All Programs, Accessories, Communications, New Connection Wizard.

After you set up the connection, click or double click the new connection. A pop-up window requests your
username and password.

2.5 Installing Bitware From the Included CD

Bitware software lets you transmit faxes or talk on the telephone while using the Internet.

Insert the included CD. Choose the Bitware program from the Product list-box, and select your Windows
system and language on the right side, then click Install. Follow the wizard to complete the installation
process.

Figure 2-6 Bitware Master Setup

Installation 2-7

Omni 56K Smart User’s Guide

Chapter 3

Specifications & Functions

This chapter introduces the specifications and functions of the Omni 56K Smart modem.

This chapter and the next three chapters are designed for advanced users who might need more information
about the Omni 56K Smart modem's specifications and functions when programming or using other
applications.

3.1 Specifications

3.2 Hardware Specification

Table 3-1 Hardware Specifications

ITEM SPECIFICATION DESCRIPTION

Power Requirements 9V AC

Operating Requirements

Weight 102g

Dimensions 75mm (W) x 25mm (H) x 100mm (L)

Temperature: 20° C to 40° C
Humidity: 5 to 90 % (non-condensing)

3.3 Firmware Specification

Specifications & Functions 3-1

Omni 56K Smart User’s Guide

Table 3-2 Firmware Specifications

PHYSICAL LAYER FOR

DATA MODE

LINK LAYER

FLOW CONTROL

COMMAND SET

DIAGNOSTICS

Multi-Auto
V.90
V.34bis 33.6 Kbps to 2.4 Kbps
V.34 28.8 Kbps to 2.4 Kbps
V.32bis 14.4/12/9.6/7.2/4.8 Kbps
V.32 9.6/4.8 Kbps
V.23 1200/600/75 bps
V.22bis 2.4 Kbps
V.22/Bell 212A 1.2K bps
V.21/Bell 103 300 bps
Auto Fallback/Forward

MNP 3-4
MNP 5
V42
V42bis
V42 SREJ

Hardware flow control: RTS/CTS
Software flow control: XON/XOFF

Full AT command set
Dialing type: DTMF/Pulse

Power on self test
Analog loop-back test
Analog loop-back with self-test

FAX

V.17 FAX (send and receive)
V.29 G3 FAX (send and receive)
V.27ter G3 FAX (send and receive)
EIA Class 1 Command Set
EIA Class 2 Command Set
EIA Class 2.0 Command Set

3.4 Protocol Support

 Data Physical Layer

. ITU-T V.90

3-2 Specifications & Functions

Omni 56K Smart User’s Guide

. ITU-T V.34bis/V.34

. ITU-T V.32bis/V.32

. ITU-T V.22bis/V.22

. ITU-T V.21

. ITU-T V.23

. Bell 212A

. Bell 103

 Fax Physical Layer

. ITU-T V.17

. ITU-T V.29

. ITU-T V.27ter

. ITU-T V.21

 Error Control and Data Compression

. ITU-T V.42

. ITU-T V.42bis

. MNP3-5

 Command Sets

. Standard command set

. EIA Class 1 Fax Command set

. EIA Class 2.0 Fax Command set

. ZyXEL AT Command set

For more information on detailed command sets, please refer to Chapter 5.

3.5 Omni 56K Smart Capability

The data/fax feature of Omni 56K Smart is described next:

Specifications & Functions 3-3

Omni 56K Smart User’s Guide

Table 3-3 Feature Description

FEATURE DESCRIPTION

Data

Fax

2W Dial-Up Line
Multi-auto/V.90/V.34bis/V.34/V.32bis/V.32/V.22bis/V.22/ Bell212A
Hardware/Software Flow Control
Error Control/Data Compression
ZyXEL AT Command Set
External Plug and Play for Windows 95/98/2000/Me/XP in RS232 mode
Repeat Dial
Caller ID
Distinctive Ring
AT Protection for software application

V.17/V.29/V.27ter
G3 T.30 Protocol
EIA Class 1/ Class 2/ Class 2.0 command set

3.6 Data Function

3.6.1 Physical Layer Capability

The Omni 56K Smart modem is a high performance universal modem capable of transmission speeds up to
56/33.6Kbps full-duplex on a 2-wire dial-up line. Universal compatibility covers a broad range of ITU-T and
BELL standards.

Table 3-4 Physical Layer Capacity

STANDARD BIT RATE [BPS] BAUD RATE

[BAUD]

MODULATION CARRIER

FREQUENCY [HZ]

V.90 28000-56000 8000 PCM 0

V.34bis/V.34 2400-33600 multiple TCM multiple

V.32bis 14400 2400 128-TCM 1800

V.32bis 12000 2400 64-TCM 1800

V.32bis 7200 2400 16-TCM 1800

3-4 Specifications & Functions

Omni 56K Smart User’s Guide

Table 3-4 Physical Layer Capacity

STANDARD BIT RATE [BPS] BAUD RATE

[BAUD]

V.32 9600 2400 32-TCM 1800

V.32 uncoded 9600 2400 16-QAM 1800

V.32 4800 2400 4-DPSK 1800

V.23 1200/75 1200/75 FSK

V.23 600/75 600/75 FSK

V.22bis 2400 600 16-QAM 1200 Call

V.22
(BELL 212A)

V.21 300 300 FSK

BELL 103 300 300 FSK

1200 600 4-DPSK 1200 Call

MODULATION CARRIER

FREQUENCY [HZ]

2400 Ans

2400 Ans

3.7 Flow Control

This feature refers to stopping and restarting the flow of data into and out of the modem's transmission and
receiving data buffers. Flow control is necessary so that a device does not receive more data than it can
handle. The Omni 56K Smart provides two kinds of flow control methods.

3.8 Hardware CTS/RTS Flow Control

This is a bi-directional flow control where CTS (Clear to Send) and RTS (Ready to Send) are RS-232 signals
that must be available on your computer. CTS is an RS-232 signal that means the device can send data now.
RTS signifies that the device is now ready to receive data. Both CTS and RTS are hardware methods of flow
control.

3.9 Software XON/XOFF Flow Control

This is a bi-directional flow control. XON and XOFF character defaults are decimals 17 and 19. These can be
changed by modifying the S-Registers S31 and S32.Both the modem and the DTE will treat XOFF as a

Specifications & Functions 3-5

Omni 56K Smart User’s Guide

signal to stop transmitting data and will treat XON as a signal to restart sending data. The modem will not
send these characters received from the local DTE to the remote modem.

3.10 Error Control

Error control keeps the modem data link error-free by detecting and re-transmitting erroneous data. The
Omni 56K Smart modem supports both MNP and V.42 error control protocols. The MNP protocol was an
industry standard developed and licensed by Microcom, Inc. Omni 56K Smart modem supports level 4 and 3
error control protocols, commonly denoted as MNP4 and MNP3. V42 is a standard developed by CCITT.
V.42 supports both LAPM and MNP4. A V.42 handshake will try an LAPM connection first, and if it is not
successful, it will try MNP4.

3.11 Data Compression

In the modem, the data compression is activated to reduce the number of bits actually sent. The receiving
modem applies these techniques in reverse to recover the actual data from the compressed data stream.

The Omni 56K Smart modem supports V.42bis and MNP5 data compression protocols. Data compression
needs an error-free data link to work correctly, otherwise the corrupted compressed data stream will ruin the
decompression process. MNP5 is used with MNP4 error control, V.42bis is used with V.42 error control. The
compression efficiency of V.42bis is generally higher than that of MNP5.

3.12 Repeat Dial

The modem will dial the default number stored in non-volatile RAM, EEPROM, repeatedly if not connected.
(s38.0=1,*Dn)

3.13 Caller Number Delivery (Caller ID)

Caller Number Delivery (CND), commonly called Caller ID, is a feature that may be offered by your local
phone company. Check your phone company for availability. You must subscribe to it and usually pay an
additional monthly service charge for this service.

With CND service, the phone company's central office will send the coded caller information to the called
station. This information is sent once between the first and second ring. Your modem can decode this caller
information and present it to the connected computer/terminal during the second ring period as part of the
call progress ring message. The modem will also report the Caller ID information if asked by the command
AT*T.

There are two kinds of caller information message formats sent by the phone company. One is the single
message format, which includes date, time, and caller ID. The other is the multiple message format, which
also includes the caller name as registered with the phone company.

3-6 Specifications & Functions

Omni 56K Smart User’s Guide

The command ATS40.2=n is used to enable (n=1) or disable (n=0) the Caller ID detection function. The
default is disabled. Enable it only when you have this service and want to enable its detection.

The Caller ID message may cause some communication software that is not
expecting it to become confused. If you plan to use the Caller ID feature, be sure
you are using software that supports it.

In single message format, the modem will send a ring message to the terminal as follows:

RING

TIME: <MM-DD hh:mm>

CALLER NUMBER: <CALLER_ID> or CALLER NAME:<CALLER_NM>

RING

MM is the two-digit month message, DD is the two-digit date message, hh is the hour and mm is the minute
of the time, and CALLER_ID is the phone number of the caller or CALLER_NM his/her name.

The following is an example of a caller ID message as it might appear on your screen:

RING

TIME: 04-28 12:30

CALLER NUMBER: 7135551414 or CALLER NAME: Brent Harper

RING

In the multiple message format, if the caller's number and name are available, the ring message will display
both:

RING

TIME: MM-DD hh:mm

CALLER NUMBER: <Caller_ID>

CALLER NAME: <Caller_Name>

RING

Specifications & Functions 3-7

Omni 56K Smart User’s Guide

Here is an example:

RING

TIME: 04-28 12:30

CALLER NUMBER: 7135551414

CALLER NAME: Tracy Huang

RING

If the caller number and name are not available, the ring message will appear as follows:

RING

TIME: 04-28 12:30

REASON FOR NO NUMBER: OUT_OF_AREA

REASON FOR NO NAME: PRIVACY

RING

The last CND message that the modem received can be displayed by using the AT*T command.

Setting S48.0=1 will cause the modem to report CND information in its ASCII coded hexadecimal raw data
format. The DTE software is responsible for explaining the data.

Please refer to the Bellcore Technical Advisory document TR-NWT-000030 for the

exact data format. The above Caller ID scheme applies to the North America area.

Different countries may employ different Caller ID schemes, check if the scheme

used in your country is supported before using the Caller ID feature. For most

other Caller ID schemes, only the Caller telephone number is provided.

3-8 Specifications & Functions

Omni 56K Smart User’s Guide

3.14 Distinctive Ring

Distinctive Ring is a phone service that may be offered by your phone company. Check your phone company
for availability. With this service, you can have several phone numbers assigned to the same phone line. The
phone company will send a different type of ring signal for each phone number being called. The subscriber
can distinguish which number is called by which type of ring is received.

One benefit of this feature is the ability to have three numbers on the same line allowing you to list the three
numbers for voice, data, and fax, respectively. You can then have your fax machine answer only the ring
corresponding to the fax number and have your modem answer only the ring corresponding to the data
number.

A ring signal is a composition of repeated on and off states. Different types of rings usually correspond to
different compositions of the "on" part (cadence) of the ring. Your modem can distinguish up to four types of
ring signals and can be commanded to answer or not answer any one of these four types of ring signals.
Following is a list of these four types of ring signals. These are the ring types used in the USA. The
difference among the ring types is the two-second ON part of the ring signal. It comprises a long, double
short, or triple short ring.

S-register S40 bits 3-6 are used for distinctive ring control. Each bit controls the answering of a particular
ring type. Setting a bit to "1" enables answering, setting it to "0" rejects the ring. Note that the ring may still
be heard even if it is not counted as an accepted ring by the modem.

The control relationships between bits 3-6 in register S40 and the different ring types are:

Table 3-5 Different Ring Types in Register S40

TYPE BIT (ON) RING SEQUENCE

1 3 1.2s or 2s on; 4s off

2 4 0.8s on, 0.4s off, 0.8s on; 4s off

3 5 0.4s on, 0.2s off, 0.4s on, 0.2s off, 0.8s on; 4s off

4 6 0.3s on, 0.2s off, 1s on, 0.2s off, 0.3s on; 4s off

3.15 Fax function

3.15.1 Fax Physical Layer Protocol

Specifications & Functions 3-9

Omni 56K Smart User’s Guide

Table 3-6 Fax Physical Layer Capacity

STANDARD BIT RATE [BPS] BAUD RATE

[BAUD]

MODULATION CARRIER

FREQUENCY [HZ]

V.17 14400-7200 2400 TCM 1800

V.29 9600-4800 2400 QAM/DPSK 1700

V.27ter 4800-2400 1600/1200 PSK/DPSK 1800

V.21 300 300 FSK

3.15.2 EIA Class 1/Class 2 & Class 2.0 Command Sets

Please refer to Section 5.2 Fax command sets.

3.15.3 ITU-T T.30 Fax Protocol

The ITU-T T.30 fax protocol is known as the G3 fax handshake signals and procedures. The modem takes
full control of this protocol - initiating and terminating fax calls, managing the communication session, and
transporting the image data. Therefore, the modem relieves the computer fax software of the T.30 protocol
handling.

You modem allows for fax speeds up to 14400 bps when transmitting to another fax machine that complies
with the V.17 fax standard. Speeds will fall back to 12000, 9600, or 7200 bps in poor line conditions. When
connecting to a G3 fax device, your modem allows for fax speeds up to 9600 bps and will automatically fall
back to 7200, 4800, and 2400 bps if the line quality is poor.

3-10 Specifications & Functions

Omni 56K Smart User’s Guide

Chapter 4

Result Codes

This chapter details the command responses for the Omni 56K Smart modem.

4.1 Result Codes

The result code is the command response or the Connect message to the DTE. The format of the result code
is dependent on the Xn and Vn commands. The lists are as follows:

Table 4-1 Result Codes

RESULT CODE FOR

ATV0 ATV1

0 OK

1 CONNECT

2 RING

3 NO CARRIER

4 ERROR

5 CONNECT 1200

6 NO DIAL TONE

7 BUSY

8 NO ANSWER

9 RINGING

10 CONNECT 2400

11 CONNECT 4800

12 CONNECT 9600

X0 X1 X2 X3 X4 X5 X6 X7

● ● ● ● ● ● ● ●

● ● ● ● ● ╬ ╬ ╬

● ● ● ● ● ● ● ●

● ● ● ● ● ● ● ●

● ● ● ● ● ● ● ●

● ● ● ● ╬ ╬ ╬

●

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ●

● ● ● ● ●

● ● ● ● ●

● ● ● ●

Result Codes 4-1

Omni 56K Smart User’s Guide

Table 4-1 Result Codes

RESULT CODE FOR

ATV0 ATV1

14 CONNECT 19200

15 CONNECT 7200

16 CONNECT 12000

17 CONNECT 14400

18 CONNECT 16800

19 CONNECT 38400

20 CONNECT 57600

21 CONNECT 76800

22 CONNECT 115200

23 CONNECT 230400

24 CONNECT 460800

25 CONNECT 921600

26 CONNECT 307200

27 CONNECT 153600

X0 X1 X2 X3 X4 X5 X6 X7

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬

● ● ● ● ╬

● ● ● ● ╬

● ● ● ● ╬

● ● ● ● ╬

● ● ● ● ╬

● ● ● ● ╬

● ● ● ● ╬

● ● ● ● ╬

28 CONNECT 102400

29 CONNECT 61440

30

31

32

CONNECT 51200

CONNECT624000

CONNECT124800

33 CONNECT 62400

34 CONNECT 41600

35 CONNECT 31200

● ● ● ● ╬

● ● ● ● ╬

●

●

●

● ● ● ● ╬

● ● ● ● ╬

● ● ● ● ╬ ╬ ╬

●

●

●

●

●

●

●

●

●

╬

●

●

4-2 Result Codes

Omni 56K Smart User’s Guide

Table 4-1 Result Codes

RESULT CODE FOR

ATV0 ATV1

36 CONNECT 24960

37 CONNECT 20800

38 CONNECT 33600

39 CONNECT 28800

40 CONNECT 26400

41

42

CONNECT 24000

CONNECT21600

100 CONNECT 56000

101 CONNECT 54666

102 CONNECT 53333

103 CONNECT 52000

104 CONNECT 50666

105 CONNECT 49333

106 CONNECT 48000

X0 X1 X2 X3 X4 X5 X6 X7

● ● ● ● ╬

● ● ● ● ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

107 CONNECT 46666

108 CONNECT 45333

109 CONNECT 44000

110 CONNECT 42666

111 CONNECT 41333

112 CONNECT 40000

113 CONNECT 38666

114 CONNECT 37333

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

Result Codes 4-3

Omni 56K Smart User’s Guide

Table 4-1 Result Codes

RESULT CODE FOR

ATV0 ATV1

115 CONNECT 36000

116 CONNECT 34666

117 CONNECT 33333

118 CONNECT 32000

119 CONNECT 30666

120 CONNECT 29333

121 CONNECT 28000

X0 X1 X2 X3 X4 X5 X6 X7

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

● ● ● ● ╬ ╬ ╬

Note: If error control result codes are enabled (X4, X5, X6, X7), the resulting message will be formatted as:

X4: CARRIER Rx Rate.

PROTOCOL: Error Control Level

COMPRESSION: Compression Level

CONNECT DTE Speed

X5: CONNECT DTE Speed/Protocol Rx Rate/Error control level

X6: CONNECT Rx Rate/ARQ

X7: CONNECT Rx Rate/ARQ/Error control level

ARQ denotes that the Automatic Retransmission reQuest type of error control is enabled.

4-4 Result Codes

Omni 56K Smart User’s Guide

)

Chapter 5

Command Sets

This chapter lists the command sets that the Omni 56K Smart modem support. These commands

include data command sets and fax command sets.

5.1 Data command sets

5.1.1 Basic AT Command Sets

Table 5-1 Basic AT Command Sets

COMMAND FUNCTION & DESCRIPTION

A/ Re-execute the last command once.

A> Re-execute the last command once or repeat the last call up to 9 times. (See also S8)

<any key> This command terminates the current connection attempt when entered in handshaking state.

+++ This is the escape sequence code. When entered, the modem returns to online command

mode.

All the Following Commands Require an "AT" Prefix:

Table 5-2 AT Command Sets Requiring an "AT" Prefix

COMMAND OPTIONS FUNCTION & DESCRIPTION REF.

A Go online in answer mode. (See also

S39.2,S43.6)

Bn

Ds Dials (numbers and options) that follow (see also

Command Sets 5-1

Handshake option. S28.7

B0 * Select CCITT V.22 for 1200 bps

B1 Select Bell 212A for 1200 bps communication.

S38.0, S35.4

. The options of s are listed as

Omni 56K Smart User’s Guide

Table 5-2 AT Command Sets Requiring an "AT" Prefix

COMMAND OPTIONS FUNCTION & DESCRIPTION REF.

follows:

DL Dials the last-dialed number.

DSn n=0-3 Dial the number stored in non-volatile RAM at

En

Hn

In

0-9, #, * Digits for dialing

P Pulse dialing S23.1

T Tone dialing S23.1

, Pause for a time specified in S8. Remaining digits

will be dialed as in-band DTMF.

; Return to command state after dialing.

! Hook flash S56

@ Waits for a 5 second silence before proceeding,

otherwise returns NO ANSWER.

R Reverse handshake. (go online in Answer mode) S17.5

W Wait for the second dial tone. Remaining digits will

be dialed as in-band DTMF.

location 'n.'

Echoes the keyboard commands. S23.0

E0 Echo off

E1 * Echo on

On/off hook control.

H0 * Hang up (on-hook) the modem or ISDN, same as

'ATH.

H1 Sets the modem to off hook.

Displays the inquired information.

I0 Displays the numerical product code, same as

'ATI.'

I1 Displays the product information and ROM

checksum.

I2 Displays the modem link status report.

S44.3

5-2 Command Sets

Omni 56K Smart User’s Guide

Table 5-2 AT Command Sets Requiring an "AT" Prefix

COMMAND OPTIONS FUNCTION & DESCRIPTION REF.

I12 Displays the physical layer status.

I13 Displays the channel response for V.34

Ln n=0-7 4 * Speaker volume control. The higher the value, the

higher the volume.

Mn

O Return to online state.

O1 Force the modem to request a retrain.

Qn

Sr.b=n Sets bit 'b' of S-register 'r' to value 'n'. 'n' is a

Sr.b? Displays the value of bit 'b' of S-register 'r'

Sr=n Sets S-register 'r' to value 'n'. 'n' must be a

Sr? Displays the value stored in S-register 'r'

T Tone dial S23.1

V1 * Displays the result code in verbose form.

Speaker control S21.1-2

M0 The speaker is always OFF.

M1 * The speaker is ON until carrier detected.

M2 The speaker is always ON.

M3 The speaker is ON after the last digit is dialed out

Tone dialing is not heard.

Displays the result code displayed. S23.7

Q0 * The modem returns the result code.

Q1 The modem does not return the result code.

Q2 The modem returns the result code but is quiet

after answering on a RING. (see also S42.2)

binary digit '0' or '1'.

decimal number between 0 and 255.

Sets the display type for result codes. S23.6 Vn

V0 Displays the result code in numeric form. (See

also S35.7 and the result code table of 'ATXn')

S24.4-6

S40.1

Command Sets 5-3

Omni 56K Smart User’s Guide

Table 5-2 AT Command Sets Requiring an "AT" Prefix

COMMAND OPTIONS FUNCTION & DESCRIPTION REF.

Xn n=0-7 5 * Result code options, see Table 41. S23.3-5

Zn

n=0-2 Resets the modem and set power-on profile. S15.5-7

Zn Resets the modem and load user profile n (0-1).

Z2 Resets the modem and load factory settings.

5.1.2 Extended AT& Command Sets

Table 5-3 Extended AT& Command Sets

COMMAND OPTIONS FUNCTION & DESCRIPTION REF.

&Bn

&Cn

&Dn

&F Load factory settings to RAM as active

Data rate, terminal-to-modem. (DTE/DCE) S28.6

&B0 The DTE rate follows the connection rate. (See

also S44.6)

&B1 * The DTE/DCE rates are fixed at the DTE setting

(See also S18, S20, and S44.6)

Carrier Detect (CD) options S21.4

&C0 CD always ON (See also S42.7)

&C1 * CD tracks the presence of carrier (See also S38.3,

S42.7)

Data Terminal Ready (DTR) options. (See also

S25)

&D0 Ignore DTR signal, assume DTR is always ON.

&D1 108.1, DTR OFF-ON transition causes dialing of

the default number. (See also 'AT*Dn' and S48.4)

&D2 * 108.2, Data Terminal Ready, DTR OFF causes the

modem to hang up.

&D3 Same as &D2 but DTR OFF causes the modem to

hang up and reset from profile 0.

configuration.

S21.6-7

5-4 Command Sets

Omni 56K Smart User’s Guide

Table 5-3 Extended AT& Command Sets

COMMAND OPTIONS FUNCTION & DESCRIPTION REF.

&Gn

&Hn

&Kn

&Nn

Guard tone options S28.4-5

&G0 * No guard tone (within USA, Canada).

&G2 1800 Hz guard tone.

Data flow control, DTE/DCE. S27.3-5

&H0 Flow control disabled.

&H3 * Hardware (CTS/RTS) flow control.

&H4 Software (XON/XOFF) flow control.

Modem error control and data compression. S27.0-2

&K0 No error control. (Same as AT&K)

&K1 MNP4 (See also S41.0). (Include MNP3)

&K2 MNP4+MNP5 (See also S38.5, S41.0).

&K3 V.42+MNP4.

&K4 * V.42+V.42bis, compatible with &K2 (See also

S38.5).

Modem link mode options (DCE/DCE). (See S19

also S43.7, S48.1)

&N0 * Multi-Auto, auto-negotiate the highest possible link

rate: .90,V.34bis, V.32bis, V.32, V.22bis, V.22 and
Bell 212A, G3 Fax V.17/V.29/V.27ter.

&N3 V.32 9600T/9600/7200T/4800

&N4 V.32 9600/7200/4800

&N5 V.32 4800

&N12 V.23 1200/75

&N13 V.23 600/75

&N14 V.22bis 2400/1200

&N15 V.22 1200

&N16 V.21 300

Command Sets 5-5

Omni 56K Smart User’s Guide

Table 5-3 Extended AT& Command Sets

COMMAND OPTIONS FUNCTION & DESCRIPTION REF.

&N17 V.32bis 14400/12000/9600/7200/4800

&N18 V.32bis 12000/9600/7200/4800

&N19 V.32bis 7200/4800

&N24 BELL 212A 1200

&N25 BELL 103 300

&N60 V.34 33600

&N61 V.34 31200

&N62 V.34 28800

&N63 V.34 26400

&N64 V.34 24000

&N65 V.34 21600

&N66 V.34 19200

&N67 V.34 16800

&N68 V.34 14400

&N69 V.34 12000

&N70 V.34 9600

&N71 V.34 7200

&N72 V.34 4800

&N73 V.34 2400

&N99 V.90 28000

&N98 V.90 29333

&N97 V.90 30666

&N96 V.90 32000

&N95 V.90 33333

&N94 V.90 34666

&N93 V.90 36000

5-6 Command Sets

Omni 56K Smart User’s Guide

Table 5-3 Extended AT& Command Sets

COMMAND OPTIONS FUNCTION & DESCRIPTION REF.

&Pn

&Rn

&Sn

&Tn Modem testing. S16

&N92 V.90 37333

&N91 V.90 38666

&N90 V.90 40000

&N89 V.90 41333

&N88 V.90 42666

&N87 V.90 44000

&N86 V.90 45333

&N85 V.90 46666

&N84 V.90 48000

&N83 V.90 49333

&N82 V.90 50666

&N81 V.90 52000

&N80 V.90 53333

&N79 V.90 54666

&N78 V.90 56000

Pulse dial make/break ratio. S23.2

&P0 * make / break=39% / 61%

&P1 make / break=33% / 67%

RTS (Request To Send) function selection. S21.5

&R0 CTS tracks RTS, response delay is set in S26.

&R1 * Ignore RTS, assumes RTS is always ON.

Data Set Ready (DSR) function selection. S21.3

&S0 * DSR overridden, DSR is always ON.

&S1 DSR according to CCITT (ITU-TSS). (See also

S41.5, S44.4)

Command Sets 5-7

Omni 56K Smart User’s Guide

Table 5-3 Extended AT& Command Sets

COMMAND OPTIONS FUNCTION & DESCRIPTION REF.

&T0 Terminate the test in progress.

&T1 Initiate an Analog Loop-back (ALB) test.

&T8 Initiate an Analog Loop-back test with self-test.

(ALB+ST)

&Vn

&Wn n=0-1 Save the current settings to user profile n in

&Yn

&Z? Display all the phone numbers stored in nonvolatile

&Zn=s n=0-3 Store phone number/s to NVRAM at location n

View the profile settings.

&V0 View the current active settings.

&Vn View the (n-1) user profile settings (n=1-2)

&V3 View the factory default settings.

nonvolatile RAM. (See also S35.6)

Break handling. Destructive Break clears the

buffer. Expedited Break is sent immediately to the
remote system.

&Y0 Destructive, expedited.

&Y1 * Nondestructive, expedited.

&Y2 Nondestructive, unexpedited.

RAM.

(n=0-3) use AT*Dn or ATS29=n to set the default
dial pointer.

5.1.3 Extended AT* Command Sets

S28.2-3

Table 5-4 Extended AT* Command Sets

COMMAND OPTIONS FUNCTION & DESCRIPTION REF.

*Cn Character length, including start, stop and parity

bit.

5-8 Command Sets

S15.3-4

Omni 56K Smart User’s Guide

Table 5-4 Extended AT* Command Sets

COMMAND OPTIONS FUNCTION & DESCRIPTION REF.

*En

*Pn n=0-15*P9 * Set transmission power level; ranges from -8 dBm

*Qn

*T Recall the last CND (Caller ID) information. S40.2

*C0 * 10-bit character length

*C1 11-bit character length

*C2 9-bit character length

*C3 8-bit character length

n=0-3 Set the default dial pointer at telephone directory

location 'n.'

*D0 * (See also S35.4 and S38.0)

Modem error control negotiation. S21.0

*E0 * If error control negotiation fails, keep the non-error

control connection.

*E1 If error control negotiation fails, disconnect the call

(hang-up).

to -15 dBm. (Default: -11 dBm)

Action taken when line quality changes. S27.6-7

*Q0 The modem will not act on poor signal quality.

*Q1 Retrain action taken if signal quality is poor. (See

also S41.2)

*Q2 * Adaptive rate, automatic fall-back or forward.

*Q3 Disconnect if the signal quality is poor.

S29 *Dn

S17.1-4

Command Sets 5-9

Omni 56K Smart User’s Guide

5.1.4 Extended AT# Command Sets

Table 5-5 Extended AT# Command Sets

COMMAND OPTIONS FUNCTION & DESCRIPTION REF.

#En

Modem status in escape state

#E0 This disables the reporting of modem status when it is in

escape state

#E1 This enables the reporting of modem status when in escape

state

5.2 Fax command sets

5.2.1 Service Class 1 Commands

Table 5-6 Service Class 1 Commands

COMMAND DESCRIPTION VALUE

+FCLASS=n Service Class Identification and Control n=0:Sets to modem mode

n=1:Sets to Class 1 mode
n=2.0:Sets to Class 2.0 mode

+FTS=n Stops data transmission and pauses n=0-255 in 10 ms units.

+FRS=n Wait for Silence n=0-255 in 10 ms units.

+FTM=<MOD> Transmit Data with <MOD> Carrier See Table 5-6

+FRM=<MOD> Receive Data with <MOD> Carrier See Table 5-6

+FTH=n Transmit HDLC Data with <MOD>=3 Carrier n=3

+FRH=n Receive HDLC Data with <MOD>=3 Carrier n=3

The value of <MOD> parameters lists as shown next:

5-10 Command Sets

Omni 56K Smart User’s Guide

Table 5-7 The Value of <MOD> Parameters

VALUE MODULATION SPEED

3 V.21 ch 2 300

24 V.27ter 2400

48 V.27ter 4800

72 V.29 7200

73 V.17 7200

74 V.17 short train 7200

96 V.29 9600

97 V.17 9600

98 V.17 short train 9600

121 V.17 12000

122 V.17 short train 12000

145 V.17 14400

146 V.17 short train 14400

5.2.2 Service Class 2 Commands

The following Class 2 commands are supported and implemented as per TIA PN2388 (8/20/90):

Table 5-8 Service Class 2 Command Syntax

COMMAND SYNTAX DESCRIPTION

+<command>=<value> Execute a command or set a parameter.

+<command>=? Read permissible settings.

+<command>? Read current setting.

Command Sets 5-11

Omni 56K Smart User’s Guide

Table 5-9 Service Class 2 Commands Supported Commands (per TIA PN2388 8/20/90)

COMMAND DESCRIPTION VALUE

+FAA=n

+FBADLIN= <value> Bad line threshold (number of consecutive bad lines for a bad page

+FBOR=n

+FBUF? Buffer size. This Read Only parameter allows the DTE to determine

+FCIG="string" Sets the local fax station ID string that is sent to polling Rx.

+FCLASS=n Service class selection. Refer to the +FCLASS Service Class 1

+FCON DCE automatically responds to a fax connection.

+FCQ=n

+FCR=n

+FDCC=vr,br,wd,ln,df,ec,
bf,st

Automatic answer mode parameters.

Answer as set by +FCLASS. n=0

DCE answers and automatically determines the type of call. n=1

0-255
parameter).Determine if Copy Quality is OK on the T.30 flow chart.
A value of 0 implies that error checking is disabled.

Phase C data bit order:

Select direct bit order. n=0

Select reversed bit order in receiving mode for phase C data. n=1

the characteristics of the DCE’s buffer size.

command in Table 56.

Sets the copy quality check capability parameters.

Disables the copy quality check capability. n=0

Only check 1D phase C data. n=1

Check both 1D and 2D phase C data. n=2

"Capability to receive" parameter.

DCE will not receive message data or poll a remote device. n=0

DCE receives message data or polls a remote device. n=1

Sets the DCE capabilities parameters.

Sets Vertical resolution to Normal (98 lpi). vr=0

Sets Vertical resolution to Fine (196 lpi). vr=1

Bit rate: 2400 bit/s; V.27ter. br=0

5-12 Command Sets

Omni 56K Smart User’s Guide

Table 5-9 Service Class 2 Commands Supported Commands (per TIA PN2388 8/20/90)

COMMAND DESCRIPTION VALUE

+FDCS=vr,br,wd,ln,df,ec,
bf,st

+FDIS=vr,br,wd,ln,df,ec,b

Bit rate: 4800 bit/s; V.27ter. br=1

Bit rate: 7200 bit/s; V.29 or V.17. br=2

Bit rate: 9600 bit/s; V.29 or V.17. br=3

Bit rate: 12000 bit/s; V.17. br=4

Bit rate: 14400 bit/s; V.17. br=5

Page width: 1728 pixels in 215mm. wd=0

Page width: 2048 pixels in 255mm. wd=1

Page width: 2432 pixels in 303mm. wd=2

Page length: A4; 297mm. ln=0

Page length: B4; 364mm. ln=1

Page length: unlimited length. ln=2

Data compression format: 1-D; modified Huffman. df=0

Data compression format: 2-D; modified Read. df=1

Disables Error correction. ec=0

Disables binary file transfer. bf=0

Minimum scan time/line: 0 ms. st=0

Minimum scan time/line: 5 ms. st=1

Minimum scan time/line: 10 ms (normal); 5 ms (fine). st=2

Minimum scan time/line: 10 ms. st=3

Minimum scan time/line: 20 ms (normal); 10ms (fine). st=4

Minimum scan time/line: 20 ms. st=5

Minimum scan time/line: 40 ms (normal); 20ms (fine). st=6

Minimum scan time/line: 40 ms. st=7

Current session parameters; refer to the +FDCC command.

Current session negotiation parameters; refer to the +FDCC

Command Sets 5-13

Omni 56K Smart User’s Guide

Table 5-9 Service Class 2 Commands Supported Commands (per TIA PN2388 8/20/90)

COMMAND DESCRIPTION VALUE

f,st command.

+FDR This initiates document reception after receiving a phase C data

command.

+FDT=df,vr,wd, ln Transmits a phase C data command: release the DCE to proceed

with negotiation.

+FET=n

+FK Regular fax abort command.

+FLID="string" Local ID string parameter.

+FLO=n

+FLPL=n

+FMDL? Request the DCE model.

+FMFR? Request the DCE manufacturer.

+FMINSP=n

End of page or document command:

More pages; same document. n=0

End of document; another document follows. n=1

No more pages or documents. n=2

Procedure interrupt; another page follows. n=4

Procedure interrupt; end of document, another document follows. n=5

Procedure interrupt; end of document. n=6

Flow control options.

No flow control. n=0

Set the XON/XOFF software flow control. n=1

Set the CTS/RTS hardware flow control. n=2

This command indicates the availability of documents for polling.

The DTE has no document available for polling. n=0

Indicates that a document is available for polling. n=1

Minimum phase C speed parameter.

2400 bps. n=0

4800 bps. n=1

7200 bps. n=2

5-14 Command Sets

Omni 56K Smart User’s Guide

Table 5-9 Service Class 2 Commands Supported Commands (per TIA PN2388 8/20/90)

COMMAND DESCRIPTION VALUE

+FPHCTO=
<value>

+FPTS=n

+FREL=n

+FREV? Request the DCE revision identification.

+FSPL=n

9600 bps. n=3

12000 bps. n=4

14400 bps. n=5

DTE Phase C response time-out:Determines how long the DCE will
wait for a command after reaching the end of data when transmitting
in Phase C.<value>=0 to 255; 100 ms units.

Page transfer status

Received page status - good. n=1

Received page status - bad; retrain requested. n=2

Received page status - good; retrain requested. n=3

Received page status - bad; procedure interrupt requested. n=4

Received page status - good; procedure interrupt requested. n=5

Phase C received EOL alignment:

The EOL patterns are bit aligned as received. n=0

The last received bits of EOL patterns are byte aligned by the DCE,
with necessary zero fill bits inserted. Refer to TIA PN-2388 for
details.

"Enable polling" command:

Disable polling. n=0

Enable polling. n=1

0-255

n=1

All other +F commands are not supported, but the modem will respond OK. In many cases this means "don't
care."

Command Sets 5-15

Omni 56K Smart User’s Guide

Table 5-10 Class 2 Command Responses

RESPONSE VALUE FUNCTION AND DESCRIPTION

+FCFR Confirmation.

+FCIG:"string" Reports the remote ID response CIG.

+FCON Facsimile connection response.

+FCSI:"string" Reports the remote ID response CSI.

+FDCS:vr,br,wd,ln,df,ec,bf,st Reports the session parameters response; refer to the

+FDCC=.... command.

+FDIS:vr,br,wd,ln,df,ec,bf,st Reports the session negotiation parameters response; refer to

the +FDCC=.... command.

+FDTC:vr,br,wd,ln,df,ec,bf,st Reports the remote capabilities response; refer to the

+FDCC=.... command.

+FET:n Message response for a received page; refer to the +FET=n

command in Error! Reference source not found..

+FHNG:n

+FNSC:"HEX string" Reports the non-standard facilities command frame.

+FNSF:"HEX string" Reports the non-standard facilities frame response.

+FNSS:"HEX string" Reports the non-standard setup frame response.

+FPOLL Remote polling indication.

+FPTS:n Receive a page transfer status response; refer to the +FPTS=n

+FTSI:"string" Report the remote ID response TSI.

Call termination status response.

n=00 Normal and proper end of connection.

n=10 Transmit error on phase A hang up code.

n=20 Transmit error on phase B hang up code.

n=40 Transmit error on phase C hang up code.

n=50 Transmit error on phase D hang up code.

n=70 Receive error on phase B hang up code.

n=90 Receive error on phase C hang up code.

n=100 Receive error on phase D hang up code.

command.

5-16 Command Sets

Omni 56K Smart User’s Guide

Class 2 Flow Control

Flow control is necessary to match the DTE-DCE data rate to the line-signaling rate while transmitting or
receiving Group 3 (T.4) data. In Class 2 fax mode, both hardware (RTS/CTS) and software (XON/XOFF)
flow control are enabled.

5.2.3 Service Class 2.0 Commands

Table 5-11 Service Class 2.0 Commands

COMMAND DESCRIPTION VALUE

+FDT Transmit a phase C data command. This

command releases the DCE to proceed
with the negotiation.

+FDR Receive a phase C data command. This

command initiates document reception.

+FKS Terminates a Session, orderly fax abort.

+FIP Initialize the Service Class 2.0

Parameters.

+FCLASS=n Service Class Identification and Control n=0,1,2.0,8;refer to the +FCLASS

+FMI? Identify DCE Manufacturer ZyDas

+FMM? Identify DCE ZD1061ROMV1.xx

+FMR? Identify DCE Revision Vx.x

+FCC=vr,br,wd,In,df,ec,b
f,st

Establish DCE Capabilities

Vertical Resolution vr=0:Normal;98 lpivr=1:Fine;196 lpi

Bit Rate br=0:2400 bpsbr=1:4800

Page Width wd=0:1728 pixels in

Page Length ln=0:A4;297mmln=1:B4;364mmln=2:u

Class 1 command

bpsbr=2:7200 bpsbr=3:9600
bpsbr=4:12000 bpsbr=5:14400 bps

215mmwd=1:2048 pixels in
255mmwd=2:2432 pixels in 303mm

nlimited length

Command Sets 5-17

Omni 56K Smart User’s Guide

Table 5-11 Service Class 2.0 Commands

COMMAND DESCRIPTION VALUE

+FIS=vr,br,wd,ln,df,ec,bf,
st

+FCS=vr,br,wd,ln,df,ec,b
f,st

+FLI="string" Local Facsimile station ID String,

+FPI="string" Local Facsimile station ID String, CIG

+FLP=n Indicates a document is available for

+FSP=n Enable/Disable polling n=0:Disablen=1:Enable

+FNR=rpr,tpr,idr,nsr Enable Negotiation Reporting rpr= 0:Receiver parameters are not

Data Compression Format df=0:1-Ddf=1:2-D

Error Correction ec=0:Disable

Binary File Transfer bf=0:Disable

Minimum Scan Time/Line st=0:0 msst=1:5 msst=2:10 ms

(normal); 5 ms (fine)st=3:10
msst=4:20 ms (normal); 10 ms
(fine)st=5:20 msst=6:40 ms
(normal);20 ms (fine)st=7:40 ms

The current session’s negotiating
parameters

The current session’s parameters The same as above

TSI/CSI

polling

The same as above

n=0:No documentn=1:A document is
available

reported.

rpr=1:Receiver parameters are
reported.

tpr= 0:Transmitter parameters are not
reported.

tpr=1:Transmitter parameters are
reported.

idr= 0: ID Strings are not reported.

idr=1: ID Strings are reported.

nsr= 0:Non-standard frames are not
reported.

nsr= 1:Non-standard frames are

5-18 Command Sets

Omni 56K Smart User’s Guide

q

Table 5-11 Service Class 2.0 Commands

COMMAND DESCRIPTION VALUE

reported.

+FIE=n Procedure Interrupt parameter n=0:Disablen=1:Enable

+FPS=n Page Transfer Status n=1:Received page is good.

n=2:Page is bad; retrain is requested.

n=3:Page is good; retrain is
requested.

n=4:Page is bad; procedure interrupt
is requested.

n=5:Page is good; procedure interrupt
is requested.

+FLO=n Flow Control Select n=0:No flow control

n=1:Sets XON/ XOFF software flow
control

n=2:Sets CTS/RTS hardware flow
control

+FPR=n Serial Port Rate Control n=0:Automatic DTE rate detection by

the DCE

n>0:Serial rate is fixed at the value
multiplied by 2400 bps.

+FBO=n Phase C Data Bit Order n=0:Selects direct bit order

n=1:Selects reversed bit order

+FEA=n Phase C Received EOL alignment n=0:EOL patterns are as received

+FCR=n Capability to Receive n=0: Do not receive message data or

poll a remote device.

n=1: Receives message data or polls
a remote device.

+FCQ=<rq>,<tq> Copy Quality disable/enable rq= 0:Receive copy quality check is

disabled.

rq=1:Receive copy quality check is
enabled.

t

= 0:Transmit copy quality check is

Command Sets 5-19

Omni 56K Smart User’s Guide

Table 5-11 Service Class 2.0 Commands

COMMAND DESCRIPTION VALUE

disabled.

tq=1:Transmit copy quality check is
enabled.

+FRQ=pql,cbl Receive Quality Thresholds pgl= 0-64h:Specifies the percentage

of good lines

cbl= 0-ffh:Specifies the maximum
tolerable number of consecutive bad
lines.

+FAA=n Adaptive Answer Mode n=0:Answers as set by +FCLASS

n=1:Answers and automatically
determines the call type.

+FCT=n Phase C Timeout n=0-ffh,1 sec units

+FMS=n Minimum Phase C Speed n=0:2400 bps

n=1:4800 bps

n=2:7200 bps

n=3:9600 bps

n=4:12000 bps

n=5:14400 bps

+FBS? Buffer Size 512,256

5.3 S-Register Descriptions

In most bit-mapped S-registers, the default bit value is 0. An asterisk follows non-0 default values. In some
cases, default values are shown in the reference column preceded by +. Some bits are reserved for factory use
and should not be changed.

5.3.1 Basic S-Registers "ATSn=x"

Table 5-12 Basic S-Registers "ATSn=x"

COMMAND FUNCTION & DESCRIPTION REF.

5-20 Command Sets

Omni 56K Smart User’s Guide

Table 5-12 Basic S-Registers "ATSn=x"

COMMAND FUNCTION & DESCRIPTION REF.

S0= Sets the number of rings on which the modem will answer. A

value of 0 disables auto-answering.

S1= Counts and stores the number of rings from an incoming

call.

S2= Defines the escape code character, default ' +' (43 dec.). A

value of 128-255 disables the escape code.

S3= Defines the ASCII Carriage Return. +013

S4= Defines the ASCII Line Feed. +010

S5= Defines the ASCII Backspace key. A value of 128-255

disables the Backspace key' s delete function.

S6= Sets the number of seconds the modem waits before dialing

if ' X0' or ' X1' is selected. If a setting of ' X2,' 'X7' is
selected; the modem will dial as soon as it detects a dial
tone. This register also sets the time-out interval for the "W"
dial modifier to wait for the dial tone. (See also S41b4)

S7= Sets duration, in number of seconds modem waits for a

carrier.

S8= Sets duration, in seconds, for pause (,) option in Dial

command and pause between command re-executions for
Repeat (>) command.

S9= Sets duration, in tenths of a second of remote carrier signal

before recognition. (Ignored if in non-FSK or half-duplex
operation)

S10= Sets duration, in tenths of a second, that the modem waits

after the carrier is lost before hanging up.

S11= Sets duration and spacing, in milliseconds, of dialed Touch-

Tones.

+000

+000

+043

+008

+003

+060

+002

+006

+007

+070

5.3.2 Extended S-Registers "ATSn=x"

Command Sets 5-21

Omni 56K Smart User’s Guide

Table 5-13 Extended S-Registers "ATSn=x"

COMMAND BIT DEC HEX FUNCTION AND DESCRIPTION REF.

bit dec hex Bit-mapped register. +000 S13=

S14=

S15=

S16=

1 2 2 Captures modem manufacturer information

during V.42 handshake, can be displayed at
ATI2 <Last Speed/Protocol> line if available
('Flash' or 'ZyXEL' stands for ZyXEL
connection).

bit dec hex Bit-mapped register: +002

1 0 0 Grant Remote Digital Loop-back test request. &T4

2 2 Deny Remote Digital Loop-back test request. &T5*

bit dec hex Bit-mapped register. +066

0,1 0 0 Even parity

1 1 Odd parity

2 2 No parity

2 0 0 1 stop bit

4 4 2 stop bits

4,3 0 0 10 bit character length

8 8 11 bit character length

16 10 9 bit character length

24 18 8 bit character length

7-5 0 0 Profile 0 as active settings after power on. Z0

32 20 Profile 1 as active settings after power on. Z1

64 40 Factory default as active settings after power on. Z2*

dec hex Test status register. +000

0 0 No test in progress. &T0

1 1 Analog Loop-back test in progress &T1

3 3 Local Digital Loop-back test in process

6 6 Remote Digital Loop-back test in process

5-22 Command Sets

Omni 56K Smart User’s Guide

Table 5-13 Extended S-Registers "ATSn=x"

COMMAND BIT DEC HEX FUNCTION AND DESCRIPTION REF.

7 7 Remote Digital Loop-back with self-test in

8 8 Analog Loop-back with self-test in progress. &T8

S17=

S18=

S19= Dec

S20=

Bit dec hex Bit-mapped register. +022

4-1 0-30 0-1E Set transmit power level from 0 to -15 dBm.

5 0 0 Normal dial. (Default) D

32 20 Reverse dial, go online in answer mode. DR

dec hex Force modem to fix baud rate when answering +000

0 0 Disable fixed baud function

1-46 1-2E Enable baud rate to be fixed when answering.

Hex

0-99

dec hex DTE speed (bps). Auto detected from AT

0 0 230400 bps

1 1 115200 bps (Default)

2 2 76800 bps

3 3 57600 bps

4 4 38400 bps

5 5 19200 bps

6 6 16800 bps

7 7 14400 bps

8 8 12000 bps

9 9 9600 bps

10 A 7200 bps

0-63

process

(See also S35b3) (Default *P11)

Baud rate value settings (n) the same as S20.

Modem connection mode, same setting value as
'AT&Nn' command.

Command

*Pn

+000/&Nn

+001

Command Sets 5-23

Omni 56K Smart User’s Guide

Table 5-13 Extended S-Registers "ATSn=x"

COMMAND BIT DEC HEX FUNCTION AND DESCRIPTION REF.

46 2E 921600 bps

Note: Only speeds up to S20=15 are supported by auto-speed detection.

S21=

11 B 4800 bps

12 C 2400 bps

13 D 1200 bps

14 E 460800 bps

15 F 300 bps

16 10 307200 bps

17 11 153600 bps

18 12 102400 bps

20 14 61440 bps

21 15 51200 bps

22 16 624000 bps

24 18 124800 bps

25 19 62400 bps

26 1A 41600 bps

27 1B 31200 bps

28 1C 24960 bps

29 1D 20800 bps

bit dec hex Bit-mapped register. +178

0 0 0 Maintain a non-error control connection when a

modem error control handshake fails (default).

1 1 Drop a connection when the modem error

control handshake fails.

1-2 0 0 The speaker is always OFF. M0

2 2 The speaker is ON until the carrier is detected.

(Default)

*E0

*E1

M1*

5-24 Command Sets

Omni 56K Smart User’s Guide

Table 5-13 Extended S-Registers "ATSn=x"

COMMAND BIT DEC HEX FUNCTION AND DESCRIPTION REF.

S23=

4 4 The speaker is always ON. M2

6 6 The speaker is ON after the last digit is dialed

out the until carrier is detected.

3 0 0 DSR is always ON (default). &S0

8 8 According to CCITT (see also S44.4, S41.5). &S1

4 0 0 CD is always ON. &C0

16 10 CD tracks the presence of the data carrier (see

also S38.3) (default).

5 0 0 CTS follows RTS in synchronous mode. The

response delay is set in S26.

32 20 Ignore RTS (CTS always ON) in synchronous

mode. (Default)

6-7 0 0 Assume DTR is always ON. &D0

64 40 108.1, DTR OFF-ON transition causes the

modem to dial the default number.

128 80 108.2 Data Terminal Ready, DTR OFF causes

the modem to hang up and return to the
command state (default)

192 C0 108.2, DTR OFF causes the modem to hang up

and reset the modem to profile 0 after the DTR
is dropped.

bit dec hex Bit-mapped register. +105

0 0 0 Command echo disabled. E0

1 1 Command echo enabled (default). E1

1 0 0 Tone dial (default). T

2 2 Pulse dial. P

2 0 0 Pulse dial make/break ratio = 39% / 61%

(default).

4 4 Pulse dial make/break ratio = 33% / 67%. &P1

3-5 0 0 ATX0 (see result code table). X0

M3

&C1

&R0

&R1

&D1

&D2

&D3

&P0

Command Sets 5-25

Omni 56K Smart User’s Guide

Table 5-13 Extended S-Registers "ATSn=x"

COMMAND BIT DEC HEX FUNCTION AND DESCRIPTION REF.

8 8 ATX18 X1

S25= 0 to 255 0-FF Specify the time delay that the DTR signal

S27=

16 10 ATX2 X2

24 18 ATX3 X3

32 20 ATX4 X4

40 28 ATX5, error control result code is enabled

(default).

48 30 ATX6, error control result code is enabled. X6

56 38 ATX7, error control result code is enabled. X7

6 0 0 Displays the result code in numeric format (see

S35.7).

64 40 Displays the result code in verbose format

(default).

7 0 0 The modem returns the result code (default). Q0

128 80 The modem does not return the result code (see

also S40.1).

bit dec hex Bit-mapped register. S24=

6-4 16-112 10-70 Speaker volume control, increments of 16 in

decimal value.

needs to be OFF before it is recognized, in 10
ms units. If S25=0, the delay time is set to 4 ms.

dec hex RTS/CTS delay. +000 S26=

0 to 255 0-FF Set the delay, in 10 millisecond units between

the RTS and the modem's CTS response in
synchronous mode (see '&Rn' command).

bit dec hex Bit-mapped register. +156

0-2 Modem error control.

0 0 No error control. &K0

1 1 MNP4 + MNP3 (see also S41.0). &K1

X5

V0

V1

Q1

L0-3

+000

&Rn

5-26 Command Sets

Omni 56K Smart User’s Guide

Table 5-13 Extended S-Registers "ATSn=x"

COMMAND BIT DEC HEX FUNCTION AND DESCRIPTION REF.

2 2 MNP4 + MNP5 (see also S38.5, S41.0). &K2

S28=

S29= 0 to 3 0 to 3 Set the default dial phone number pointer, use

3 3 V.42+MNP4 &K3

4 4 V.42 + V.42bis (compatible with &K2) (default). &K4*

3-5 0 0 Flow control disabled

24 18 Hardware (RTS/CTS) flow control (default)

32 20 Software (RTS/CTS) flow control

40 28 Reserved

6-7 Signal quality.

0 0 No response to poor signal quality. *Q0

64 40 Retrain action taken if signal quality is poor. *Q1

128 80 Adaptive rate (auto fall-back/forward) when

signal quality changes (default).

192 C0 Disconnect when signal quality is poor. *Q3

bit dec hex +068

2-3 0 0 Destructive, expedited break. &Y0

1 4 Non-destructive, expedited break (default). &Y1

10 8 Non-destructive, un-expedited break. &Y2

4-5 0 0 No guard tone (default). &G0

16 10 550 Hz guard tone. &G1

32 20 1800 Hz guard tone. &G2

6 0 0 The DTE/DCE rate follows link rate (see also

s18, S44b6)

1 64 The DTE/DCE rate is fixed at the DTE setting,

range from 300-460.8 Kbps (default, also see
S18, S44b6)

AT&Zn=s to store phone numbers in the
Windows registry.

*Q2

&B0

+000 *D

Command Sets 5-27

Omni 56K Smart User’s Guide

Table 5-13 Extended S-Registers "ATSn=x"

COMMAND BIT DEC HEX FUNCTION AND DESCRIPTION REF.

S31= 0-255 0-FF Holds the ASCII decimal value of the XON +017

S32= 0-255 0-FF Holds the ASCII decimal value of the XOFF +019

S35=

S38=

S40=

bit dec hex Bit-mapped register. +032

1 2 2 Disables aborting from the terminal during

modem handshaking.

3 8 8 Add 16dB attenuation to the leased line

transmission power.

5 32 20 Enable Selective Reject in V.42 (default).

7 128 80 Enable extended numerical result codes from 50

to 65 when an error corrected connection is
made. Use with ATV0 (see result code table).

bit dec hex Bit-mapped register. +000

0 1 1 Repeatedly dials the default number if not

connected.

3 0 0 CD tracks the carrier (default). &C0

3 8 8 The DCD ON/OFF sequence follows UNIX

standard, DCD ON before connect message is
sent, DCD off after the last DCE response is
sent.

4 16 10 Auto-mode fax receiving is disabled, hangs up if

a fax call is received (default).

5 32 20 Disable MNP5 negotiation. &Kn

bit dec hex Bit-mapped register. +032 S39

2 4 4 Reverse the answers. Answer in originating

mode.

bit dec hex Bit-mapped register. +000

1 2 2 No result code is displayed in answer mode. Q2

2 4 Enables caller ID detection.

3 8 Enables type 1 ring detection.

4 16 Enables type 2 ring detection.

V0S23.6

*Dn, S29

&C1,
S21.4

&N0

ATA

5-28 Command Sets

Omni 56K Smart User’s Guide

Table 5-13 Extended S-Registers "ATSn=x"

COMMAND BIT DEC HEX FUNCTION AND DESCRIPTION REF.

5 32 Enables type 3 ring detection.

6 64 Enables type 4 ring detection.

S41=

S42=

S43=

bit dec hex Bit-mapped register. +000

0 1 1 Special MNP compatibility. (see also s27.0,

S38.5)

3 8 8 Enable CCITT signals 140 and 141 on EIA-

232D interface.

4 16 10 In X2-X7 setting, modem waits for S6 seconds

before dialing and ignores dial tone detection.

5 32 20 DSR follows DCD and pulses for 0.5 sec after

DCD on-off transition.

6 64 40 Force S0>=2; does not answer on the first ring. S0

7 128 80 Ignore calling tone, not to be used as fax

detection.

bit dec hex Bit-mapped register.

1 2 2 Enables throughput averaging. 2

2 4 4 A CND message forces on even if ATQ2 is set.

3 8 8 This disables the escape sequence code in

answer mode.

4 16 10 This disables the V.17 14,400 Fax in calling

mode and no effect on answering mode.

6 64 40 This disables the 'RINGING' result code. Xn

7 128 80 The DCD is forced on but pulses off for 0.5

second at carrier loss.

bit dec hex Bit-mapped register. +008

6 64 40 Enable a 1.5 second pause between off-hook

and modem answering.

7 128 80 The modem hangs-up if the line condition does

not permit the modem to run at the highest
speed set by '&Nn' command.

&Kn

&Sn

&C0

Command Sets 5-29

Omni 56K Smart User’s Guide

Table 5-13 Extended S-Registers "ATSn=x"

COMMAND BIT DEC HEX FUNCTION AND DESCRIPTION REF.

S44= bit dec hex Bit-mapped register. +000

S45= dec0-

S48=

3 8 8 ATDSn initiates auto-dial of the stored numbers

4 16 10 DSR follows DTR (see also S41.5). &S1

6 64 40 When selected with ‘&B0’, DTE speed is fixed at

255

dec hex The CND silence detection interval. +028 S46=

0 to 255 0-FF To process the CND, silence must be detected

bit dec hex Bit-mapped register. +000

0 1 1 This causes CND information to be reported in

2 4 4 This enables the sending of data calling tones

3 8 8 Reverses the V.23 channel speed. Originate

4 16 10 (Works with the &D1 command) DTR ON

hex0­FF

consecutively until a connection is made (cyclic
dial).

38400 when the link speed is above 9600. DTE
speed is fixed at 9600 if the link speed is 7200.
If it is below 7200, the DTE speed follows link
speed. When selected with &B1, DTE speed is
fixed at the current rate when an ARQ
connection is made. When a non-ARQ
connection is made, DTE speed follows the link
speed (See also S18).

The delay during which the CND silence
detection is disabled, in 20 ms units (see also
S46).

for the specified interval, in 20 ms units.

raw format.

(CNG).

mode modem speed (Send/Receive) 1200/75;
Answer mode modem speed (Send/Receive)
75/1200.

causes the modem to dial the default number
and DTR OFF causes the modem to hang-up
and reset to profile 0. When the modem is idle
(waiting for a command), it does not dial any
number when DTR changes from ON to OFF.

DSn

&Bn

+100

&N12

5-30 Command Sets

Omni 56K Smart User’s Guide

Table 5-13 Extended S-Registers "ATSn=x"

COMMAND BIT DEC HEX FUNCTION AND DESCRIPTION REF.

S52= bit Dec hex Bit-mapped register. +000

7 0 0 Select 'Mark' as the first signal of the V.23

handshaking sequence (default).

128 80 Select 'Space' as the first signal of the V.23

handshaking sequence (default).

bit dec hex +000 S56=

0 to 255 0-FF Hook flash detect time, in units of 10ms. A value

of zero uses country-specific default duration.

bit dec hex Bit-mapped register. +016 S57=

4 16 10 Enables the reporting of Class 1 capability in

response to +FCLASS=?

&N12

&N12

Bit S-register bit number, 'b', used in 'ATSr.b=n' and 'ATSr.b=?'

Dec Decimal value, 'x', used in 'ATSn=x'

Hex Equivalent Hexadecimal value.

+nnn Factory default when listed in 'Reference' column.

Note: AT' is omitted when an AT command is referred to in the 'Reference' column.

Command Sets 5-31

Omni 56K Smart User’s Guide

5-32 Command Sets

Omni 56K Smart User’s Guide

Chapter 6

Troubleshooting

This chapter covers potential problems and the possible solutions.

Table 6-1 Troubleshooting

PROBLEM CORRECTIVE ACTION

None of the LEDs turn on when
I start the modem.

I cannot access the modem via
my computer.

I cannot connect to the Internet. Make sure the Line port is properly connected to the wall jack.

I cannot get the software driver
to uninstall and reinstall
properly.

Make sure your modem is turned on and the included power adapter is
connected to it as well as plugged into an appropriate and functioning
power outlet.

Check the RS-232 cable connections between the modem and your
computer.

Carefully follow the instructions in this User’s Guide to install the software
driver.

Contact technical support if these steps fail to solve the problem.

Make sure the modem’s RS-232 port is connected to your computer’s
serial port

Restart the modem by using the ON/OFF switch on your modem.

Restart your computer. Make sure that you have entered your ISP
connection information correctly. The password may be case sensitive, so
make sure that the Caps lock key is not turned on.

Make sure that your computer’s TCP/IP settings are configured properly.

Close your Windows applications.

Use the add and remove hardware option in the Windows Control Panel to
remove the modem.

Insert the included CD. If a screen automatically opens, close it.

Unplug the RS-232 cable and plug it back in.

Use the add new hardware option in Control Panel to start the installation
wizard.

Restart your computer if prompted.

Troubleshooting 6-1

Omni 56K Smart User’s Guide

Index

A

Automatic Data/Fax call detection................... 1-1

B

Back Panel ....................................................... 2-1

Basic S-Registers ........................................... 5-20

Bitware............................................................. 2-7

C

Caller ID .................................... 3-4, 3-6, 3-7, 3-8

Capability..................................................3-3, 3-4

Command Sets ......................... 5-1, 5-4, 5-8, 5-10

Connecting Your Omni 56K II to the RS-232 Port

..................................................................... 2-2

Copyright ............................................................ ii

Customer Support .............................................. iv

D

Data command sets .......................................... 5-1

Data compression...................................... 1-2, 3-6

Data Function................................................... 3-4

Dial-Up Networking ........................................ 2-7

Distinctive Ring ........................................3-4, 3-9

E

Error Control.............................. 3-3, 3-4, 3-6, 4-4

error correction................................................. 1-2

Extended S-Registers ............................ 5-21, 5-22

F

Fax command sets.......................................... 5-10

Firmware Specification.................................... 3-1

Flow Control...................................... 3-2, 3-4, 3-5

Front Panel LEDs ............................................ 2-1

G

G3 14.4Kbps Fax send/receive ........................ 1-2

H

Hardware CTS/RTS Flow Control................... 3-5

Hardware Specification.................................... 3-1

I

ITU-T T.30 Fax Protocol............................... 3-10

M

MOD.............................................................. 5-11

MOD Parameters ........................................... 5-10

P

Physical Layer Capability................................ 3-4

Protocol Support.............................................. 3-2

R

Repeat Dial ............................................... 3-4, 3-6

Result Codes .................................................... 4-1

RS-232 plug and play compatible.................... 1-1

S

Service Class 1 Commands............................ 5-10

Service Class 2.0 Commands......................... 5-17

Specifications................................................... 3-1

S-Register Descriptions ................................. 5-20

Index A

Omni 56K Smart User’s Guide

T

TCP/IP Setup ................................................... 2-5

Troubleshooting............................................... 6-1

V

V.34bis 33.6K.................................................. 1-1

x

Z

ZyDAS Fifth Generation Data Pump with V.90

Capability .....................................................1-1

B Index