US Robotics SPORTSTER FLASH X2 Manual de usuario
FLASH x2
User’s Guide
This manual covers installation and operating instructions for the
following U.S. Robotics modems:
· Sportster Flash with x2
IMPORTANT MESSAGE: This product is capable of download speeds
up to 56Kbps; however, the download speeds you experience may be
lower due to varying line conditions. We are continuing to test and
improve our modem technology to achieve faster speeds. Visit our Web
site at http://www.3Com.com for future updates and enhancements.
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 and the 3Com logo, U.S. Robotics and the U.S. Robotics logo are
registered trademarks of 3Com Corp. Any trademarks, tradenames,
service marks or service names owned or registered by any other
company and used in this manual are the property of their respective
companies.
3Com assumes no responsibility for errors or omissions in this manual.
Nor does 3Com make any commitment to update the information
contained herein.
1997 3Com Corporation
Table of Contents
3COM/U.S. ROBOTICS : THE INTELLIGENT CHOICE IN
INFORMATION ACCESS™....................................................................1
WELCOME TO X2 INFORMATION ACCESS......................................3
FEATURES.............................................................................................5
EXTERNAL MODEM INSTALLATION....................................................7
COMMUNICATIONS SOFTWARE........................................................11
SPORTSTER FLASH AND X2..............................................................15
ENHANCED X2 FEATURES .....................................................................15
HOW TO TELL IF X2 IS ENABLED IN YOUR MODEM ....................................16
HOW X2 WORKS..................................................................................16
The Shift from Analogue to Digital Circuits......................................17
Client and Server Modems .............................................................17
Making x2 Work..............................................................................18
CONTROLLING X2.................................................................................18
CONTROLLING LINK SPEEDS WITH &N AND &U.......................................19
Controlling Link Speeds..................................................................19
Limiting the Highest Possible Connect Speed.................................19
Limiting the Lowest Possible Connect Speed..................................20
Limiting a Range of Possible Connect Speeds................................20
&N and &U Command Values.........................................................21
TROUBLESHOOTING X2 CLIENT CONNECTIONS ........................................22
NEW X2 RESULT CODES.......................................................................23
NEW X2 RESULT CODES (CONTINUED)...................................................24
TROUBLESHOOTING..........................................................................25
U.S. ROBOTICS ON-LINE RESOURCES.............................................29
ARE YOU STILL HAVING PROBLEMS?......................................................30
IF YOU MUST RETURN THE MODEM TO US..............................................31
GLOSSARY..........................................................................................33
QUICK REFERENCE............................................................................43
SPORTSTER FLASH SPECIFICATIONS.............................................65
CE MARK............................................................................................66
Electromagnetic Compatibility.........................................................66
SAFETY...............................................................................................66
LIMITED WARRANTY..........................................................................67
Sportster Flash x2 - User’s Guide 1
3Com/U.S. Robotics :
The Intelligent Choice in
Information Access™
ongratulations! You have just purchased the Sportster Flash
modem. Since 1976, 3Com/U.S. Robotics has grown to become
a key manufacturer and developer of information access
technology. 3Com/U.S. Robotics advanced technology allows you to
use your faxmodem to open up a new world of information access.
Now you can take advantage of the highest transfer rates available
today with our new x2™technology!
As an innovator in the data communications field, 3Com/U.S. Robotics
has a history of bringing the latest technology to market at an affordable
price.
3Com/U.S. Robotics owns the core technology, known as the data
pump, that works in its access products. This allows 3Com/U.S.
Robotics to bring new technologies and features to market faster and at
a lower cost, while passing the savings on to you.
Be sure to read the following section to learn more about the latest
3Com/U.S. Robotics breakthrough, x2 technology. Your new 56K
Professional Message Modem takes advantage of this technology to
make connecting over analog lines faster than ever before.
For more information on 3Com/U.S. Robotics, visit the 3Com/U.S.
Robotics World Wide Web Home Page at: http://www.3com.com.
C
2Sportster Flash x2 - User’s Guide
Sportster Flash x2 - User’s Guide 3
Welcome to x2 Information
Access
The latest breakthrough in online communications
Until now, 33.6Kbps was thought to be the practical limit for speed over
standard phone lines. Now, x2 shatters that barrier, to bring you
download speeds of up to 56Kbps. However, the download speeds you
experience may be lower due to varying line conditions. This modem is
software upgradeable, allowing easy upgrades to new features and
enhancements as they become available.
An integrated end-to-end solution from the leader
3Com is well positioned to bring you x2 technology. Our U.S. Robotics
modems are the world's number one seller, and our Total ControlTM and
CourierTM product lines are favored by many Internet service providers.
This widespread acceptance allows 3Com to offer x2 technology to
virtually anyone.
Taking advantage of the modern telephone network
x2 technology uses the increasingly digital telephone network to bring
you faster downloads, by eliminating the analog-to-digital conversion in
the downstream path.
x2 takes advantage of the typical network configuration found when an
analog subscriber connects to a digitally connected server. Since x2
bypasses the analog-to-digital conversion in the downstream path, it
can use nearly all of the available 64K network bandwidth. (Upstream
data, typically less speed sensitive, travels at the standard V.34 rate.)
4Sportster Flash x2 - User’s Guide
The result is a completely new kind of transmission technique. Based
on “encoding” rather than “modulation,” it can give you download
speeds that you never thought possible. What’s more, with standard
V.42bis compression, x2 can download at speeds up to a blistering
115.2Kbps.
The new standard for online speed
3Com has already submitted x2 to the ITU-T standards committee for
acceptance as the next online standard.
For more information on U.S. Robotics x2 technology, see our World
Wide Web page at http://.3com.com.
Sportster Flash x2 - User’s Guide 5
Features
Data Communications
Your modem offers a range of internationally accepted standard
modulation methods and protocols. It utilises hardware-based
V.42/MNP 2-4 error control and V.42 bis/ MNP 5 data compression.
Your modem will transmit at speeds up to 33,600 bps with throughput
to 115,200 bps. Also, it is universally compatible with the following
standards: V.34, V.32 bis, V.32, V.22 bis, Bell 212A/V.22, V.23, V.21
modems.
Fax Capability
You can use your modem with Class 1 or Class 2.0 fax software to
exchange faxes with Group 3 fax machines world-wide at speeds up to
14.400 bps.
Flash ROM Upgradable
Sportster Flash supports software download through flash memory.
You can download upgrades to obtain quickly and easily the latest
features.
Speakerphone*
You can use your new Sportster as a full-duplex speakerphone without
the echoing sound of some speakerphones. The full-duplex feature
allows you to speak at the same time as someone on the other end
without losing any sound quality. This affords you all the convenience
of a speakerphone without the extra hardware and leads for the home
or office.
The external modems have built-in microphones.
6Sportster Flash x2 - User’s Guide
Personal Voice Mail*
With Personal Voice Mail, your modem is a full-featured messaging
system offering business-quality voice mail features in the convenience
of your home or office.
Using this feature, you can send voice greetings and record voice
messages like a standard answering machine with several “voice
mailboxes” on one system. You can even access your voice messages
remotely. Your modem will auto-detect incoming fax, voice, and data
calls and provides fax-on-demand services you can tailor to your needs.
* A headset, external powered speakers or soundcard is required
to utilise all voice features including hands-free speakerphone.
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