US Robotics 56K Series User manual

3Com U.S. Robotics
56K* Voice Internal PCI
Manual
P/N: 2.024.506

This manual covers installation and operating instructions for the following modems:
3Com U.S. Robotics®56K* Voice Internal PCI
3Com, the 3Com logo, and U.S. Robotics are registered trademarks and x2 is a trademark of
3Com Corporation. Windows is a registered trademark of Microsoft Corp. Other product and
brand names may be trademarks or registered trademarks of their respective owners.
Copyright © 1999 3Com Corporation
3800 West Golf Road
Rolling Meadows, IL 60008
All Rights Reserved.
*IMPORTANT! In accordance with the ITU standard for 56K transmissions (V.90), this modem is
capable of 56 Kbps downloads. However, due to varying line conditions, the actual speeds you
experience may be lower. Uploads from users to server equipment travel at speeds up to 31.2
Kbps. An analogue phone line compatible with the V.90 standard and an Internet provider or
corporate host site compatible with the V.90 standard are necessary for these high-speed
downloads.
See http://www.3com.com/56k for details.

Table of Contents
TABLE OF CONTENTS ............................................................................................3
WELCOME TO 56K* INFORMATION ACCESS...................................................1
PRODUCT FEATURES .............................................................................................2
ERROR CONTROL AND DATA COMPRESSION SCHEMES................................................2
FAX MODULATION SCHEMES......................................................................................2
FAX STANDARDS........................................................................................................2
V.90 FRONT CHANNEL LINK RATES............................................................................2
V.90 BACK CHANNEL LINK RATES .............................................................................2
V.32BIS LINK RATES ..................................................................................................3
ADDITIONAL LINK RATES ...........................................................................................3
FAX LINK RATES........................................................................................................3
VOICE PRODUCT FEATURES................................................................................4

SPEAKERPHONE....................................................................................................... 4
PERSONAL VOICE MAIL .......................................................................................... 4
HARDWARE INSTALLATION (READ ME FIRST) ............................................. 6
INSTALLING THE MODEM WITH WINDOWS® 95, WINDOWS 98, AND
WINDOWS NT 4.0..................................................................................................... 8
PLUG AND PLAY (PNP) INSTALLATION ................................................................... 8
HOW TO INSERT THE MODEM INTO THE COMPUTER.............................................. 8
INSTALLING MODEM DRIVERS WITH WINDOWS 95 ...............................................13
INSTALLING MODEM DRIVERS WITH WINDOWS 98 ...............................................16
INSTALLING MODEM DRIVERS WITH WINDOWS NT 4.0 WITHOUT PNP ENABLED
................................................................................................................................20
INSTALLING MODEM DRIVERS WITH WINDOWS NT 4.0 WITH PNP ENABLED......21
UNINSTALLING THE MODEM WITH WINDOWS® 95, WINDOWS 98, AND
WINDOWS NT 4.0....................................................................................................24
WINDOWS 95 AND WINDOWS 98.............................................................................24
WINDOWS NT 4.0 ...................................................................................................25

TROUBLESHOOTING............................................................................................26
READ THIS FIRST!..................................................................................................26
GLOSSARY...............................................................................................................39
TECHNICAL REFERENCE....................................................................................57
TYPING COMMANDS ...............................................................................................57
BASIC DATA COMMANDS........................................................................................58
EXTENDED DATA COMMANDS................................................................................68
S-REGISTERS ..........................................................................................................78
FAX COMMANDS.....................................................................................................90
SCREEN MESSAGES.................................................................................................93
COMPLIANCE INFORMATION............................................................................94
COMPLIANCE WARNING.........................................................................................94
INTERCONNECTING PORTS.....................................................................................95
COMMAND RESTRICTIONS .....................................................................................95

REGULATORY INFORMATION...........................................................................97
INSTALLATION OF MODEM IN HOST PC..................................................................97
NETWORK COMPATIBILITY DECLARATION ...........................................................97
NOTE:.....................................................................................................................98
CE COMPLIANCE....................................................................................................98
Electromagnetic Compatibility.............................................................................98
This device complies with the following standards in accordance with the
European Directives 89/336/EEC........................................................................98
Safety (Low Voltage Directive).............................................................................98
OPERATION OF PAN-EUROPEAN APPROVED MODEMS ............................................99
WARRANTY...........................................................................................................100
CONTACT DETAILS................................................................................................108

1
Welcome to 56K* Information Access
The International Telecommunication
Union (ITU) determines the technical
protocols that communications devices
must use to operate with each other.
Modems that comply with ITU standards
can “talk” to other standards-compliant
modems and fax machines worldwide.
The ITU has decided on a worldwide
standard for 56K modem technology.
With a 3Com U.S. Robotics modem, you
can get 56K Internet access from any
service provider who offers the ITU
V.90 standard or 3Com 56K technology.
3Com is working with providers
everywhere to quickly upgrade their
service to the ITU V.90 standard.
* IMPORTANT! In accordance with the ITU
standard for 56K transmissions (V.90), this
modem is capable of 56 Kbps downloads.
However, due to varying line conditions, the
actual speeds you experience may be lower.
Uploads from users to server equipment travel at
speeds up to 31.2 Kbps. An analogue phone line
compatible with the V.90 standard and an
Internet provider or corporate host site
compatible with the V.90 standard are necessary
for these high-speed downloads. See
http://www.3com.com/56k for details.

2
Product Features
Modulation Schemes
ITU-T V.90
ITU-T V.34 (Inc 33,600)
ITU-T V.32bis
ITU-T V.32
ITU-T V.22bis
ITU-T V.22
ITU-T V 23
ITU-T V.21
Error Control and Data Compression Schemes
ITU-T V.42
ITU-T V.42bis
MNP 2-5
Fax Modulation Schemes
ITU-T V.17
ITU-T V.29
ITU-T V.27ter
ITU-T V.21
Fax Standards
EIA 578 Class 1 FAX
EIA 592 Class 2.0 FAX
V.90 Front Channel Link Rates
28000, 29333, 30666, 32000, 33333, 34666,
36000, 37333, 38666, 40000, 41333, 42666,
44000, 45333, 46666, 48000, 49333, 50666,
52000, 53333, 54666, 56000, 57333
V.90 Back Channel Link Rates
4800, 7200, 9600, 12000, 14400, 16800,
19200, 21600, 24000, 26400, 28800, 31200

3
V.34 Link Rates
4800, 7200, 9600, 12000, 14400, 16800,
19200, 21600, 24000, 26400, 28800, 31200,
33600
V.32bis Link Rates
4800, 7200, 9600, 12000, 14400
Additional Link Rates
300, 1200/75 (V.23), 1200, 2400
Fax Link Rates
2400, 4800, 7200, 9600, 12000, 14400

4
Voice Product Features
If your new modem has voice
capabilities, the following information
will apply:
Speakerphone
With the addition of a microphone, a set
of external, powered speakers (each
purchased separately), and the
appropriate software (included on CD-
ROM), your new voice modem provides
all the convenience of a full-duplex
speakerphone. Unlike many half-duplex
speakerphones, your modem allows you
to converse normally without annoying
echoes and distortion. Simply plug the
speakers into the socket on the modem
identified with the and the
microphone into the socket with the
icon and you are ready to go.
Personal Voice Mail
Personal Voice Mail turns your modem
into a full-featured messaging system.
Enjoy the convenience of professional
voice mail in your home or office.
With Personal Voice Mail and the
appropriate software, you can record