Paradyne KeepInTouch 3765 User manual

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older version of a

Paradyne product

document.

Paradyne is no longer a

subsidiary of AT&T. Any

reference to AT&T

Paradyne is amended to

read Paradyne

Corporation.

AREA CODE CHANGE

Please note that the area

code for Paradyne

Corporation in Largo,

Florida has changed from

813 to 727.

For any Paradyne

telephone number that

appears in this manual

with an 813 area code,

dial 727 instead.

3765-A2-GB90-10

Issue 2

May 1995

KeepInTouch PCMCIA

Modem

Models 3765 and 3766

User’s Guide

Printed on recycled paper

Member Company

A Issue 2 May 1995

Printed in U.S.A.

Notice

This publication is protected by federal copyright law. No part of this

publication may be copied or distributed, transcribed, stored in a

retrieval system, or translated into any human or computer language in

any form or by any means, electronic, mechanical, magnetic, manual or

otherwise, or disclosed to third parties without the express written

permission of AT&T Paradyne Corporation, 8545 126th Ave. N., P.O.

Box 2826, Largo, Florida 34649-2826.

AT&T Paradyne Corporation makes no representation or warranties

with respect to the contents hereof and specifically disclaims any

implied warranties of merchantability or fitness for a particular purpose.

Further, AT&T Paradyne Corporation reserves the right to revise this

publication and to make changes from time to time in the contents

hereof without obligation of AT&T Paradyne Corporation to notify any

person of such revision or changes.

Changes and enhancements to the product and to the information

herein will be documented and issued as a new release to this manual.

A customer opinion card is provided at the front of this publication and

your comments are appreciated. If the form has been removed, address

comments to AT&T Paradyne Corporation, Technical Publications,

8545 126th Ave. N., P.O. Box 2826, Largo, Florida 34649-2826. AT&T

Paradyne may use or distribute any of the information supplied, as

appropriate, without incurring any obligation whatsoever.

* AT&T Paradyne is a member of AT&T’s Multimedia Products and

Services Group.

Important Regulatory Information

B

Issue 2 May 1995

Trademarks

Bell is a registered trademark of the Regional Bell Operating Company.

COMSPHERE is a registered trademark of AT&T.

ETC is a trademark of AT&T.

EXTRA! is a registered trademark of Attachmate Corporation.

Hayes is a registered trademark of Hayes Microcomputer Products, Inc.

KeepInTouch is a trademark of AT&T.

KIT is a registered trademark of AT&T.

MNP is a registered trademark of Microcom, Inc.

MS-DOS (DOS) is a registered trademark of Microsoft Corporation.

Microsoft is a registered trademark of Microsoft Corporation.

Motorola is a registered trademark of Motorola, Inc.

PKZIP is a registered trademark of PKWARE, Inc.

Windows is a trademark of Microsoft Corporation.

All other product names are copyrighted and registered trademarks of their

respective owners.

Warranty

A limited warranty is provided with this product. Refer to the enclosed

Warranty Card for more information.

Important Safety Instructions

1. Read and follow all warning notices and instructions marked on

the product or included in the manual.

2. Do not attempt to service this product yourself, as opening or

removing covers may expose you to dangerous high voltage

points or other risks. Refer all servicing to qualified service

personnel.

3. General purpose cables are provided with this product. Special

cables, which may be required by the regulatory inspection

authority for the installation site, are the responsibility of the

customer.

4. When installed in the final configuration, the product must comply

with the applicable Safety Standards and regulatory requirements

of the country in which it is installed. If necessary, consult with the

appropriate regulatory agencies and inspection authorities to

ensure compliance.

Important Regulatory Information

C Issue 2 May 1995

5. A rare phenomenon can create a voltage potential between the

earth grounds of two or more buildings. If products installed in

separate buildings are interconnected, the voltage potential may

cause a hazardous condition. Consult a qualified electrical

consultant to determine whether or not this phenomenon exists

and, if necessary, implement corrective action prior to

interconnecting the products.

In addition, if the equipment is to be used with telecommunications

circuits, take the following precautions:

– Never install telephone wiring during a lightning storm.

– Never install telephone jacks in wet locations unless the

jack is specifically designed for wet locations.

– Never touch uninsulated telephone wires or terminals

unless the telephone line has been disconnected at the

network interface.

– Use caution when installing or modifying telephone lines.

– Avoid using a telephone (other than a cordless type)

during an electrical storm. There may be a remote risk of

electric shock from lightning.

– Do not use the telephone to report a gas leak in the

vicinity of the leak.

Government Requirements and

Equipment Return

Certain governments require that instructions pertaining to modem

connection to the public switched telephone network be included in the

installation and operation manual. Specific instructions are listed in the

following sections.

Notice to Users of the Public Switched Telephone Network

1. This equipment complies with Part 68 of the FCC rules. On the

equipment is a label that contains, among other information, the

FCC registration number and ringer equivalence number (REN) for

this equipment. If requested, this information must be provided to

the telephone company.

2. The Universal Service Order Code (USOC) associated with the

services the equipment is to be connected is RJ11C.

Important Regulatory Information

D

Issue 2 May 1995

3. The Ringer Equivalence Number (REN) is used to determine the

quantity of devices which may be connected to the telephone line.

Excessive RENs on the telephone line may result in the devices not

ringing in response to an incoming call. In most, but not all areas,

the sum of the RENs should not exceed five (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 telephone company to

determine the maximum RENs for the calling area.

4. If the modem 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 the customer 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.

5. 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 the necessary

modifications in order to maintain uninterrupted service.

6. If your modem needs to be returned for repair or replacement,

follow the return policy as indicated on your warranty card.

7. No repairs may be made by the end use customer.

8. This modem cannot be used on public coin service provided by the

telephone company. Connection to Party Line Service is subject to

state tariffs. (Contact the state public utility commission, public

service commission or corporation commission for information.)

9. The Telephone Consumer Protection Act of 1991 makes it unlawful

for any person to use a computer or other electronic device to send

any message via a telephone fax machine unless such message

clearly contains in a margin at the top or bottom of each transmitted

page or on the first page of the transmission, the date and time it is

sent and an identification of the business or other entity, or other

individual sending the message and the telephone number of the

sending machine of such business, or other entity, or individual.

In order to program this information, follow the steps outlined in the

manual supplied with your fax software.

10. An FCC compliant telephone cord with modular plugs is provided

with this equipment. This equipment is designed to be connected to

the telephone network or premises wiring using a compatible

modular jack which is Part 68 compliant.

Important Regulatory Information

E Issue 2 May 1995

EMI Warnings

!

WARNING:

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 instruction, may 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

Connect 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

!

WARNING:

The authority to operate this equipment is conditioned by the

requirement that no modifications will be made to the equipment

unless the changes or modifications are expressly approved by

AT&T Paradyne.

To comply with Part 15 FCC Regulations, do not remove or

reposition the snap-on ferrite clamp that is attached to the Model

3766 modem’s cellular direct connect cable.

To Users of Digital Apparatus in 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 Règlement sur le matériel brouilleur du Canada.

Important Regulatory Information

F

Issue 2 May 1995

Notice to Users of the Canadian Public Switched Telephone

Network

The Canadian Department of Communications label identifies certified

equipment. This certification means that the equipment meets certain

telecommunications network protective, operational and safety

requirements. The Department 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. In some cases, the

company’s inside wiring associated with a single line individual service

may be extended by means of a certified connector assembly

(telephone extension cord). 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 line 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.

The Load Number for this equipment is listed on the modem’s label.

The Load Number (LN) assigned to each terminal device denotes the

percentage of the total load to be connected to a telephone loop which

is used by the device to prevent overloading. The termination on a loop

may consist of any combination of devices subject only to the

requirement that the total of the Load Numbers of all devices does not

exceed 100.

If your equipment is in need of repair, follow the return process as

indicated on your warranty card.

Important Regulatory Information

G Issue 2 May 1995

This page intentionally left blank.

i

Issue 2 May 1995

1 Introduction

Welcome to the World of Portable, High-Speed

Data Communications! 1-1. . . . . . . . . . . . . . . . . . .

KeepInTouch PCMCIA Modem Package 1-2. . . . . . . . .

Supplied Equipment 1-3. . . . . . . . . . . . . . . . . . . . . .

Additional Equipment You Will Need 1-4. . . . . . . .

Where to Find Additional Information 1-5. . . . . . . . . . . .

Where to Find Technical Support Telephone

Numbers 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Installation

Installing Your KeepInTouch PCMCIA Modem 2-1. . . .

Connection to a Telephone Outlet 2-2. . . . . . . . . .

Using the KIT Utilities 2-4. . . . . . . . . . . . . . . . . . . . . . . . .

Installing Fax Software 2-5. . . . . . . . . . . . . . . . . . . . . . . .

3 Using Your Modem

What is a Modem? 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Understanding Your Modem’s Operating Modes

(Command and Data) 3-2. . . . . . . . . . . . . . . . . . . .

Using AT Commands 3-3. . . . . . . . . . . . . . . . . . . . . . . . . .

Making a Call with Your Modem 3-5. . . . . . . . . . . . . . . .

Dial Modifiers 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . .

Examples of Dial Command Strings 3-7. . . . . . . .

Disconnecting a Call 3-8. . . . . . . . . . . . . . . . . . . . . . . . . .

Manually Answering a Call 3-9. . . . . . . . . . . . . . . . . . . . .

Using the Escape Sequence — Switching

Between Data Mode and Online

Command Mode 3-9. . . . . . . . . . . . . . . . . . . . . . . . .

ii Issue 2 May 1995

3 Using Your Modem (Continued)

Viewing, Saving, and Loading Modem Settings 3-10. . .

View Active and Stored User Profiles

Command (&V) 3-11. . . . . . . . . . . . . . . . . . . . .

Save (Write to Memory) Command (&W) 3-11. . . .

Reload Factory Settings Command (&F) 3-12. . . .

Reload Settings from a User Profile (&Y) 3-13. . . .

Reset Modem and Load User Profile (Z) 3-13. . . .

An Overview of File Transfers and Fax Operation 3-14.

File Transfers 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . .

Fax Operation 3-15. . . . . . . . . . . . . . . . . . . . . . . . . . .

Using Hayes AutoSync 3-16. . . . . . . . . . . . . . . . . . . . . . . .

Using Cellular Channels 3-16. . . . . . . . . . . . . . . . . . . . . . .

4 AT Command Set and S-Registers

AT Commands and S-Registers 4-1. . . . . . . . . . . . . . . .

A Troubleshooting A-1

B Technical Specifications B-1

C Response Codes C-1

iii

Issue 2 May 1995

D Cellular Communications

Using Direct Connect D-1. . . . . . . . . . . . . . . . . . . . . . . . .

Understanding ETC D-3. . . . . . . . . . . . . . . . . . . . . . . . . . .

Understanding Automatic Cellular Setup D-3. . . . . . . . .

Using Cellular Modem Pools D-4. . . . . . . . . . . . . . . . . . .

Connecting with Non-ETC Modems D-5. . . . . . . . . . . . .

Tips for Successful Cellular Operation D-6. . . . . . . . . . .

Overview of Cellular Networks D-7. . . . . . . . . . . . . . . . . .

E Advanced Modem Concepts

Changing Modem Data Rates and Modulations E-1. . .

Error Control E-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Data Compression E-3. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Flow Control E-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Modem-to-Computer Flow Control E-4. . . . . . . . .

Computer-to-Computer Flow Control E-6. . . . . . .

Modem-to-Modem Flow Control E-6. . . . . . . . . . .

GL Glossary

IN Index

iv Issue 2 May 1995

1 Introduction

1-1 Supplied Equipment 1-2. . . . . . . . . . . . . . . . . . .

2 Installation

2-1 Modem Installation 2-2. . . . . . . . . . . . . . . . . . . .

3 Using Your Modem

3-1 Dial Data Network 3-2. . . . . . . . . . . . . . . . . . . . .

E Advanced Modem Concepts

E-1 Modem-to-Computer Flow Control E-5. . . . . . .

E-2 Various Flow Control Methods E-5. . . . . . . . . . .

v

Issue 2 May 1995

4 AT Command Set and S-Registers

4-1 AT Command Reference 4-2. . . . . . . . . . . . . . .

4-2 S-Register Reference 4-20. . . . . . . . . . . . . . . . . .

A Troubleshooting

A-1 Modem Installation A-2. . . . . . . . . . . . . . . . . . . .

A-2 Computer Connection A-3. . . . . . . . . . . . . . . . . .

A-3 Connection Problems while Answering

a Call A-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A-4 Connection Problems while Placing

a Call A-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A-5 Online Operation A-8. . . . . . . . . . . . . . . . . . . . . .

A-6 Fax Operation A-8. . . . . . . . . . . . . . . . . . . . . . . . .

B Technical Specifications

B-1 Technical Specifications B-1. . . . . . . . . . . . . . . .

C Response Codes

C-1 X Commands’ Effect on CONNECT

Response Codes C-2. . . . . . . . . . . . . . . . . . . .

C-2 Basic Response Codes C-3. . . . . . . . . . . . . . . .

C-3 Extended Response Codes for

Failed Connections C-3. . . . . . . . . . . . . . . . . .

C-4 Extended Response Codes for

Successful Connections C-4. . . . . . . . . . . . . .

D Cellular Communications

D-1 Configuration Options Set by Automatic

Cellular Setup D-4. . . . . . . . . . . . . . . . . . . . . . .

1-1

Issue 2 May 1995

1

Welcome to the World of

Portable, High-Speed Data

Communications!

Congratulations on your purchase of an AT&T KeepInTouch

PCMCIA modem (Models 3765 and 3766). The KeepInTouch

PCMCIA modem is a credit card size modem that combines

high-speed V.34 data communications with send-and-receive fax

capability. The modem fits into any notebook or laptop personal

computer that has a PCMCIA Type II socket and allows you to

keep in touch with your home or office from anywhere in the

United States and Canada.

The KeepInTouch PCMCIA high-speed modem can transmit and

receive information over a standard telephone line at 28,800 bits

per second. It is compatible with a variety of modem standards,

allowing it to communicate with slower modems. To ensure

error-free data transfers, the KeepInTouch PCMCIA modem

employs V.42 and MNP Levels 4–2 error control. To increase

effective data throughput and reduce the duration of calls, the

modem supports both V.42bis and MNP5 data compression

standards to achieve peak transmission rates up to 200,000 bps.

For fax operation, the modem supports both Class 1 and

Class 2 fax standards. Class 1 fax places most of the

processing burden on the software while Class 2 fax places it on

the modem. In addition, the modem also supports the CCITT

V.17 fax protocol which allows fax transfers to occur over

standard telephone lines at 14,400 bps. To take advantage of

the 14,400 bps data rate, you must connect to a fax machine or

fax modem that also supports the V.17 protocol.

Introduction

1-2 Issue 2 May 1995

KeepInTouch Model 3766 also supports transmission over

cellular networks, using the ETC (Enhanced Throughput

Cellular) protocol. ETC improves data communications over

cellular telephone channels. For more information about cellular

operation, refer to Appendix D,

Cellular Communications

.

The Hayes AutoSync feature is also supported. For more

information on Hayes AutoSync, refer to the

Using Hayes

AutoSync

section on page 3-16.

KeepInTouch PCMCIA

Modem Package

Figure 1-1 and the following sections describe what equipment

is supplied and what equipment is required to install and operate

the modem.

Figure 1-1. Supplied Equipment

Introduction

1-3

Issue 2 May 1995

Supplied Equipment

The following hardware and software is included with the

modem:

One KeepInTouch PCMCIA modem

One user’s guide

A 2-pin modular telephone cord

The following items are optional and may not be packaged with

your modem:

A KIT Utilities diskette (high-density 3.5″) containing

software for installing, enabling, upgrading, and testing

your modem. The diskette also contains help text files

with information on using your modem and its AT

command set.

NOTE:

If your modem was included as part of your PC purchase,

then a KIT Utilities diskette may not have been provided

with the modem.

Diskettes and user’s guides for software which allows

you to send data and fax transmissions.

A technical information update sheet (if applicable).

Introduction

1-4 Issue 2 May 1995

Additional Equipment You Will Need

The following additional hardware and software is necessary to

install and operate your modem.

A notebook or laptop personal computer that supports a

PCMCIA Type II socket.

If you did not receive a KIT Utilities diskette with your

modem, you will need Card and Socket Services that

comply with PCMCIA Release 2.1. These are PCMCIA

enablers (drivers) which should already be installed on

your PC.

Communications software that allows the PC to control

the modem (if not supplied with your modem). This

software application allows you to transfer files to and

from your PC, receive electronic mail (e-mail), dial into

bulletin boards, etc.

If you want to send and receive faxes, you will also need

fax application software (if not supplied with your

modem).

For connection to a normal telephone line you need:

A telephone outlet (RJ11C in the USA, CA11A in

Canada).

For connection to a cellular telephone (supported in Model 3766

only) you need:

A cellular telephone,

A Cellular Direct Connect Cable specific to your type and

model of cellular telephone. For more information about

equipment for cellular operation, refer to Appendix D,

Cellular Communications

.

Introduction

1-5

Issue 2 May 1995

Where to Find

Additional Information

Help text files (also called “readme” files) contain supplemental

information, such as tutorials and AT command descriptions.

They may also contain information that is more recent than what

is printed in this user’s guide. Help text files are available

through the following sources:

KIT Utilities software. This software diskette may have

been packaged with your modem.

If you did not receive a KIT Utilities diskette and your

modem was included in a PC purchase, your PC vendor

may have loaded the files from the diskette onto the hard

drive for you. The main executable file for the KIT Utilities

is “KIT.EXE”.

A Bulletin Board System (BBS). Check to see if there is a

BBS telephone number

on your warranty card or other

enclosed documentation

. The BBS contains the latest

version of the KIT Utilities, which include the help text

files.

You can view the help text files either through the KIT Utilities or

with a text editor (the files are in ASCII format). Instructions for

installing the KIT Utilities and reading the help text files are

provided in Chapter 2, starting on page 2-4.

Where to Find Technical

Support Telephone Numbers

You may have access to a technical support center and BBS for

further assistance. Check your warranty card for the telephone

numbers for this support or the other supporting documentation

from your PC or modem vendor. The location of these telephone

numbers varies, depending on whether you purchased your

modem separately, or as part of a PC package.

NOTE:

The inside front cover of this user’s guide contains space

for recording technical support and BBS telephone

numbers.

2-1

Issue 2 May 1995

2

Installing Your KeepInTouch

PCMCIA Modem

This section describes how to install your KeepInTouch PCMCIA

modem. Please take a minute to review these procedures before

installing your modem.

Use Figure 2-1 and the following steps to install your modem.

1. Locate an unused PCMCIA socket on your PC. Refer to your

PC’s user’s guide for more information about the PCMCIA

socket.

2. Hold the modem so that the product logo label is facing up,

and the 68-pin connector is facing the PCMCIA socket.

Insert the modem into the socket, pushing it all the way in so

that all 68 pins are engaged.

!

CAUTION:

Use care when inserting the modem into the socket.

Do not force the modem, as that may damage the pins on

the connector.

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