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.

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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