US Robotics Sportster Manuale utente

This manual covers installation and operating instructions for the following U.S. Robotics modems:

Sportster®56 kbps∗internal and external modems

U.S. Robotics, the USRobotics logo, and Sportster are registered trademarks and Connections,

Total Control, Courier, RapidComm, x2, and the x2 logo are trademarks of 3Com Corporation and

its subsidiaries. Windows and Internet Explorer are registered trademarks of Microsoft Corp.

CompuServe is a registered trademark of CompuServe Inc. America Online is a registered trademark

of America Online Inc. Netscape Navigator is a trademark of Netscape Communications Corp. Any

other trademarks, trade names, or service marks used in this manual are the property of their

respective owners.

7770 North Frontage Road

Skokie, IL 60077-2690

∗∗ IMPORTANT! All x2 products are capable of 56 kbps downloads; however, due to FCC rules

which restrict power output of the service providers' modems, current download speeds are limited to

53 kbps. Actual speeds may vary depending on line conditions. Uploads from users to service

providers travel at speeds up to 28.8 kbps. An x2-capable modem, an x2-compatible analog phone

line and an x2-capable Internet Service Provider are necessary for these high-speed downloads.

Welcome to x2 Information Access 1

Product Features 3

Before You Begin (Windows 95 Users) 4

Internal Modem Installation with Windows 3.x 5

A Word about COM Ports and IRQs 5

How to Use ComTest to Determine Your Modem’s Settings 7

Testing an Installed Modem 9

What to Do with ComTest’s Recommendation 10

How to Change the Modem’s Settings 12

How to Insert the Modem into the Computer 14

Internal Modem Installation with Windows 95 21

Plug and Play Installation 21

How to Prepare for Plug and Play Installation 21

How to Insert the Modem into the Computer 23

How to Move Through the “New Hardware Found” Screens 27

External Modem Installation with Windows 3.x 31

How to Determine Which Serial Cable to Buy 31

How to Connect the Modem to the Computer 32

External Modem Installation with Windows 95 35

How to Determine Which Serial Cable to Buy 35

How to Connect the Modem to the Computer 36

Software Installation and Testing 43

Software Installation and Registration Using the Setup Wizard 43

Sending Your First Fax 58

Installing Other Fax/Data Software 61

Type of Modem 61

Initialization String 61

Flow Control 61

UART (External Modems Only) 62

Using Modem Station 63

Why Modem Station? 63

What Does Modem Station Do? 63

Installing Modem Station 63

Starting Modem Station 66

Using Detect New Modems 69

Using Terminal 70

Using Modem Configurator 73

Using Modem to Computer 76

Using the Extended Information Screens 80

U.S. Robotics Modem Update Wizard 89

Installation 89

Operation 94

Troubleshooting and Online Help Resources 101

Online Help Resources 107

Are You Still Having Problems? 111

If You Need to Return the Modem to Us 111

RapidComm Troubleshooting Tips 112

A Note to Users with Older Versions of RapidComm on Their Systems 113

Glossary 114

Technical Quick Reference 127

Front Panel Lights (External Modems) 128

Command Summary 129

DIP Switches (Modems with DIP Switches Only) 144

S-Registers 146

The Serial Interface 157

Regulatory Information 159

Manufacturer’s Declaration of Conformity 159

Caution to the User 160

IC (Canada) 160

UL Listing/CUL Listing 160

Connecting to the Telephone Company 161

Fax Branding 161

Radio and Television Interference 162

For Canadian Modem Users 163

Limited Warranty 166

Index 169

WELCOME TO X2INFORMATION ACCESS

Thelatest breakthrough in

onlinecommunications

Until now, 33.6 kbps 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 56 kbps.

However, due to FCC rules which restrict

power output of your service provider’s

modems, current download speeds are limited

to 53 kbps. This modem is software

upgradable, allowing easy upgrades to new

features and enhancements as they become

available.

Anintegrated end-to-end

solutionfrom the leader

U.S. Robotics is well positioned to bring you

x2 technology. Our Sportster®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 U.S.

Robotics to offer x2 technology to virtually

anyone.

WELCOMETOX2 INFORMATIONACCESS

Takingadvantage of the

moderntelephone network

x2 technology takes advantage of the typical

network configuration found when an analog

subscriber connects to a digitally connected

server. Because it requires no analog-to-digital

conversions in the downstream path (which

can cause line noise), x2 can use nearly all of

the available 64K network bandwidth.

(Upstream data, typically less speed sensitive,

travels at the standard V.34 rate.)

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.42 bis

compression, x2 can download at speeds up

to a blistering 115.2 kbps.

Updatingx2 technology is

easyand FREE!

Read the section of this manual titled “U.S.

Robotics Modem Update Wizard” (page 85)

for information about using this software (on

the Connections™CD) to update your

modem’s code to the latest version.

Thenew standard for online

speed

U.S. Robotics 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://x2.usr.com.

PRODUCT FEATURES

Your new x2 modem

provides many advanced

features. Here are just a

few:

Modulation Schemes

x2 technology

ITU-T V.34+

ITU-T V.34

ITU-T V.32bis

ITU-T V.32

ITU-T V.22bis

ITU-T V.22

ITU-T V.23

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

33333, 37333, 41333, 42666,

44000, 45333, 46666, 48000,

49333, 50666, 52000, 53333,

54666, 56000, 57333

Back Channel Link

Rates

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

BEFORE YOU BEGIN (WINDOWS 95 USERS)

Your Sportster modem is a Plug and Play

device. Windows 95 can automatically identify

a Plug and Play device and determine if your

system has the resources necessary to support

the device. However, Plug and Play will not

work if you do not have resources available or

if devices on your system are not reporting

resource usage correctly. Here’s how you can

verify that your system has the necessary

resources before installing the modem.

1. Click the Windows 95 Start button, point

to Settings, and then click Control Panel.

2. Double-click the System icon.

3. When the “System Properties” screen

appears, click the Device Manager tab.

4. Double-click Computer and the

“Computer Properties” screen appears.

Select the option at the top of the screen to

show Interrupt Requests (IRQs).

You will see the IRQs your system is currently

using. If IRQs 3, 4, 5, and 7 are being used,

you need to free an IRQ before you begin

installation. This process involves moving a

device from the IRQ you want to use to a

different (and unusually higher) IRQ setting.

Please read the documentation for (or contact

the manufacturer of) the device that is currently

using the IRQ you want to use for your modem

to learn more about what you should do to free

the IRQ for your modem.

INTERNALMODEMINSTALLATIONWITHWINDOWS3.X

You’ll need these items from your

Sportster modem box:

modem phone cord

Connections CD

Plus:

a screwdriver (not included)

AWord about COM Ports

and IRQs

Most computer accessories — a mouse,

sound card, enhanced graphics card, scanner,

etc. — require a special connection through

which they can communicate with the

computer. For some devices, this connection is

called a communications (or COM) port. Most

computers have 1 or 2 COM ports, but they

can have up to 4. Although internal modems

do not connect to COM ports directly, they do

require a COM port setting, which is

determined by the setting on the modem’s

COM jumper pins.

Each COM port uses an interrupt request

(IRQ). An accessory uses an IRQ to get the

attention of your computer’s central processing

unit (CPU) so that the accessory can perform

INTERNALMODEMINSTALLATIONWITHWINDOWS3.X

a task. The computer stops what it’s doing,

depending on the priority of the request, to

help the accessory perform its task. When two

accessories share an IRQ, it’s like two people

asking different questions in unison to a third

person. Just as the person being asked the two

questions cannot understand either request, a

computer can lock up or otherwise fail to

communicate properly with your modem when

there is an IRQ conflict.

DKEY POINT: Accessories cannot

share COM ports and should not share

IRQs. When accessories try to share

settings, they will either not work

properly or not work at all.This section

of the manual will help you understand

the COM/IRQ settings on your new

Sportster modem.

U.S. Robotics has set your modem to a default

Plug and Play setting geared towards

Windows 95 users. In this configuration, the

shunts used to set your modem’s COM port

and IRQ settings are hanging from single

jumper pins and will not affect your modem’s

settings. As a Windows 3.x user, you need to

run the ComTest program (on the

Connections CD) to determine what settings

your modem should use.

NOTE: Some communications

software programs require a particular

setting for your modem (RapidComm,

which shipped with your modem, does

not). If you wish to use a program other

than RapidComm, now is a goodtime to

read that software’s manual to

determine what setting is required.

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