3Com U.S. Robotics 56K Voice Manuale utente
56K Voice Faxmodem Internal
User’s Guide
PN 1.024.1644-00
This manual covers installation and operating instructions for the following
3Com U.S. Robotics modem:
56K* Voice Faxmodem Internal
* IMPORTANT! In accordance with the ITU standard for V.90 transmissions, this modem
is capable of 56 Kbps downloads. However, the download speeds you experience
may be lower due to varying line conditions and other factors. Uploads from users to
server equipment travel at speeds up to 31.2 Kbps. An analogue phone line compatible
with the ITU V.90 standard or 3Com’s proprietary 56K technology, and an Internet
provider or corporate host site with the ITU V.90 standard or 3Com’s proprietary 56K
technology are necessary for these high-speed downloads. The ITU V.90 standard
was officially determined in February, 1998 and is expected to be ratified in
September, 1998. See www.3com.com/56k for details.
The material contained in this document is for information purposes only
and is subject to change without notice. 3Com makes no representations
or warranties with respect to the contents hereof and specifically
disclaims any implied warranties of merchantability or fitness for any
particular purpose.
No part of this document may be reproduced, transmitted, transcribed, or
stored in a retrieval system in any form or by any means, mechanical,
magnetic, electronic, optical, chemical or otherwise, without the written
permission of 3Com.
3Com assumes no responsibility for errors or omissions in this manual.
Nor does 3Com make any commitment to update the information
contained herein.
3Com,the 3Com logo, and U.S. Robotics are registered trademarks of
3Com Corporation or its subsidiaries. Windows is a registered trademark
of Microsoft Corp. Any other trademarks, trade names, service marks,or
service names owned or registered by any other company and used in
this manual are the property of their respective owners.
Copyright 1998 3Com Corporation or its subsidiaries
All rights reserved.
Table of Contents
WELCOME TO 56K INFORMATION ACCESS......................................1
PRODUCT FEATURES.......................................................................2
INTERNAL MODEM INSTALLATION WITH WINDOWS 95...................5
DETERMINING AVAILABLE RESOURCES....................................................5
DETERMINING YOUR VERSION OF WINDOWS 95.........................................6
PLUG AND PLAY INSTALLATION............................................................7
HOW TO PREPARE FOR PLUG AND PLAY INSTALLATION.............................7
HOW TO INSERT THE MODEM INTO THE COMPUTER .....................................8
INSTALLING MODEM DRIVERS WITH WINDOWS 95:
Versions 950 and 950a (Moving Through the “New Hardware
Found” Screens)...................................12
Version 950b (Using the Update Device Driver Wizard Screens)....16
INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X ...............20
A Word about COM Ports and IRQs............................................20
How to Change the Modem’s Settings..........................................21
How to Insert the Modem into the Computer.................................23
SOFTWARE INSTALLATION...........................................................29
WINDOWS 95..................................................................................29
WINDOWS 3.X.................................................................................29
TYPE OF MODEM..............................................................................30
INITIALISATION STRING ......................................................................30
FLOW CONTROL..............................................................................30
TROUBLESHOOTING......................................................................31
SUPPORT RESOURCES..................................................................39
ARE YOU STILL HAVING PROBLEMS?...................................................40
IF YOU MUST RETURN THE MODEM TO US.............................................40
GLOSSARY.....................................................................................41
Table of Contents
TECHNICAL REFERENCE ................................................................51
TYPING COMMANDS..........................................................................51
BASIC DATA COMMANDS ..................................................................51
EXTENDED DATA COMMANDS.............................................................57
S-REGISTERS..................................................................................64
FAX COMMANDS .............................................................................71
THE SERIAL INTERFACE (CABLE INFORMATION).......................................73
REGULATORY (CE COMPLIANCE)...................................................74
ELECTROMAGNETIC COMPATIBILITY......................................................74
RINGER EQUIVALENCE NUMBER...........................................................74
LIMITED WARRANTY......................................................................75
Welcome to 56K*Information Access
56K Voice Faxmodem Internal -User’s Guide 1
The International Telecommunications Union (ITU) decides 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 determined a worldwide standard for 56K modem technology.
With a U.S. Robotics modem, you can get 56K Internet access from any
service provider who offers the ITU V.90 standard or 3Com’s proprietary
56K technology. 3Com is working with providers everywhere to quickly
upgrade their service to the ITU V.90 standard.
∗In accordance with the ITU standard for V.90 transmissions, this modem is capable of
56 Kbps downloads. However, the download speeds you experience may be lower due
to varying line conditions and other factors. Uploads from users to server equipment
travel at speeds up to 31.2 Kbps. An analogue phone line compatible with the ITU V.90
standard or 3Com’s proprietary 56K technology, and an Internet provider or corporate
host site with the ITU V.90 standard or 3Com’s proprietary 56K technology are
necessary for these high-speed downloads. The ITU V.90 standard was officially
determined in February, 1998 and is expected to be ratified in September, 1998. See
www.3com.com/56k for details.
Product Features
56K Voice Faxmodem Internal -User’s Guide2
Modulation Schemes
ITU-T V.90
x2™ technology (Download up to 56kbps, and Upload using V.34)
ITU-T V.34+
ITU-T V.34
ITU-T V.32bis
ITU-T V.32
ITU-T V.23
ITU-T V.22bis
ITU-T V.22
Bell 212A
ITU-T V.21
Bell 103
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
Front Channel Link Rates (Download Speeds)
28000, 29333, 30666, 32000, 33333, 34666, 36000, 37333, 38666, 40000,
41333, 42666, 44000, 45333, 46666, 48000, 49333, 50666, 52000, 53333,
54666, 56000, 57333
Product Features
56K Voice Faxmodem Internal -User’s Guide 3
Back Channel Link Rates (Upload Speeds)
4800, 7200, 9600, 12000, 14400, 16800, 19200, 21600, 24000, 26400,
28800, 31200
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
Product Features
56K Voice Faxmodem Internal -User’s Guide4
Flash ROM Upgradable
56K Voice Faxmodem Internal supports software download through flash
memory. You can obtain the latest features by downloading updates
quickly and easily.
Speakerphone*
With the addition of an inexpensive set of externally powered speakers,
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 and microphone into the jacks on the modem
identified with the appropriate icons, 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 for a fraction of the cost. With Personal Voice Mail, you can record
custom greetings, receive messages, and set up multiple voice
“mailboxes”. You can even access your voice messages remotely. Your
modem will automatically detect incoming fax/voice/data calls and route
them appropriately.
*A headset, external powered speakers, or sound card (with audio cable)
is required to utilise all voice features, including hands-free
speakerphone.
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