3com EtherLink 3C900B Operating instructions

This manual covers installation and operating instructions for the following 3Com

®

U.S. Robotics

® modems:

Sportster

®

Voice 33.6 kbps internal modems

3Com, the 3Com logo, U.S. Robotics, the USRobotics logo, and Sportster are registered trademarks; Connections, Total Control, Courier, RapidComm, x2, and the x2 logo are trademarks and Towne Square 2000 is a service mark of 3Com Corporation or 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.

Copyright © 1997 3Com Corporation or its subsidiaries

7770 North Frontage Road

Skokie, IL 60077-2690

All Rights Reserved

ii

T

ABLE OF

C

ONTENTS

Before You Begin (Windows 95 Users) 1

Determining Available Resources 1

Determining Your Version of Windows 95 2

Upgrading to x2 Technology 2

Modem Installation with Windows 3.x 3

A Word About COM Ports and IRQs 3

How to Use ComTest to Determine Your Modem’s Settings 5

Testing an Installed Modem 7

What to Do with ComTest’s Recommendation 8

How to Change the Modem’s Settings 10

How to Insert the Modem into the Computer 12

Modem Installation with Windows 95 19

How to Prepare for Plug and Play Installation 19

How to Insert the Modem into the Computer 21

Installing the Modem Drivers 25

Software Installation and Testing 33

Software Installation and Registration Using the Setup Wizard 33

Sending Your First Fax 48

T ABLE OF C ONTENTS

Installing Other Fax/Data Software 52

Type of Modem 52

Initialization String 52

Flow Control 52

U.S. Robotics Modem Update Wizard 53

Installation 53

Operation 58

Using Modem Station 65

Troubleshooting and Online Help Resources 89

When Plug and Play Fails 95

Online Help Resources 96

Are You Still Having Problems? 100

If You Need to Return the Modem to Us 101

RapidComm Voice Troubleshooting Tips 102

A Note to Users with Older Versions of RapidComm Voice on Their Systems 102

Glossary 103

Technical Quick Reference 113

AT Command Summary 114

S Registers 128

Regulatory Information 138

Manufacturer’s Declaration of Conformity 138

iii

T ABLE OF C ONTENTS

Caution to the User 139

IC (Canada) 139

UL Listing/CUL Listing 139

Connecting to the Telephone Company 140

Fax Branding 140

Radio and Television Interference 141

For Canadian Modem Users 142

Limited Warranty 145

Index 148

iv

B

EFORE

Y

OU

B

EGIN

(W

INDOWS

® 95 U

SERS

)

Determining Available

Resources

Your Sportster

®

Voice 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.

5. 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 usually 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 how to free the IRQ for your modem.

1

Determining Your Version of

Windows 95

B EFORE Y OU B EGIN (W INDOWS 95 U SERS )

Windows 95 version

_________________

Follow these steps to determine your version of Windows 95. This information will be important during installation.

1. Click the My Computer icon on your desktop with the right mouse button.

2. Click Properties.

3. In the “System Properties” screen, look at the system information under the General tab (circled in the following screen image).

The number following the text “Microsoft

Windows 95” will end with “950”, “950a”, or “950b”. This indicates your version of

Windows 95. Write this number on the blank below for later reference. Then click

OK.

Upgrading to x2

™

Technology

Be sure to read the section titled “U.S.

Robotics Modem Update Wizard” on page 53 for information on upgrading your 33.6

faxmodem to x2

™

technology, allowing downloads of up to 56 kbps*.

•

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 end users to service providers travel at speeds up to 28.8 kbps. An x2 modem, an analog phone line compatible with x2 technology, and an

Internet Service Provider with x2 service are necessary for these high-speed downloads. See http://www.3com.com/x2 for details.

2

Plus:

M

ODEM

I

NSTALLATION WITH

W

INDOWS

® 3.

X

You’ll need these items from your

Sportster ® modem box:

modem

Connections

™

CD a screwdriver (not included)

phone cord microphone

A Word 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

3

4

M ODEM I NSTALLATION WITH W INDOWS 3.

X processing unit (CPU) so that the accessory can perform 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.

D

KEY 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.

3Com 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 good time to read that software’s manual to determine what setting is required.


X

How to Use ComTest to

Determine Your Modem’s

Settings

1. Insert the Connections CD into your CD-

ROM drive.

2. In Windows’ Program Manager, click Run on the File menu. Type d:\comtest.exe and press ENTER. This starts ComTest, the program that determines which COM ports and IRQs are available for use by your modem.

3. The screen in the next column appears when ComTest starts.

•

If there is a modem in your computer which you are replacing with your new

Sportster modem, go to “Testing an

Installed Modem” on page 7 to determine which COM and IRQ settings the older modem is using.

•

If a modem is not currently installed in your computer, click Recommend

settings for a new modem.

Then click Next.

5

5. If you have a free setting, you will see a screen like this.


X

4. Click Internal Modem. Then click Next.

COM2/IRQ3 is free in this example.

ComTest might instead recommend

COM1/IRQ4, COM3/IRQ4, or

COM4/IRQ3 for your modem.

Write down the displayed settings. You’ll need to know these settings later. Click

Next.

If you do not have a free setting, you will see a screen like this.

6


X

Click Finish to exit ComTest. Go to “What to Do with ComTest’s Recommendation” on page 8.

6. When you see this screen, click Finish to exit ComTest.

Testing an Installed Modem

If there is a modem already installed in your computer, you can determine its COM and

IRQ settings by selecting the Test an

installed modem option. Follow the instructions on screen until you see the screen that tells you “Testing is complete.” This screen will also tell you which COM and IRQ settings your present modem is using. These are the settings you want to use for your new

Sportster modem. Write the settings down.

Go to “What to Do with ComTest’s

Recommendation” on page 8.

Turn off and unplug your computer and remove your present modem. Go to “How to

Change the Modem’s Settings” on page 10.

7


X

If ComTest recommended COM2/IRQ3

What to Do with ComTest’s

Recommendation

Write “COM2” and “IRQ3” somewhere where it will be handy during software installation. Go to “How to Change the

Modem’s Settings” on page 10.

NOTE: If your communications software requires a modem that

ComTest does not recommend, there is a good chance that the setting is being used by another device in your system.

To free that setting in your system, consult your computer’s manual. Go to

“How to Change the Modem’s Settings” on page 10.

If ComTest recommended COM1/IRQ4

Write down “COM1” and “IRQ4” somewhere where it will be handy during software installation. Go to “How to Change the


If ComTest recommended COM3/IRQ4 or COM4/IRQ3

Do not use either of these settings. While the

COM port part of the setting is acceptable

(ComTest only recommends COM ports that are not being used), the IRQ part of the setting is not acceptable. When ComTest recommends either COM3/IRQ4 or

COM4/IRQ3, the IRQ in the setting is being used by another accessory. You could use the suggested IRQ for the modem, but you run the risk that the modem and/or the other accessory sharing the IRQ might not work properly.

8


X

If you do not have a sound card, use

COM3/IRQ5. Write “COM3” and “IRQ5” somewhere where it will be handy during software installation. You will have to change the settings on your modem. Go to “How to

Change the Modem’s Settings” on page 10.

If you do have a sound card, use

COM2/IRQ3. To use this setting, you have to first disable your computer’s second serial port

(COM2). This is a pronged socket on the back of your computer.

•

Go to your computer manufacturer’s manual.

•

Find out how to disable the COM port.

•

Find out which of the sockets on the back of your computer is the second serial port.

•

If you have something plugged into that port, find out if you can plug it in somewhere else. Any accessory plugged into that port will not work after the port has been disabled.

•

Then return to this point in this manual to continue.

After disabling COM2, you can use the

COM2/IRQ3 setting.

Write “COM2” and “IRQ3” somewhere where it will be handy during software installation and go to “How to Change the


If ComTest reports that “You do not have any available COM ports and/or

IRQs”

We recommend you disable COM1 or

COM2. When you disable one of these COM ports, you can use it and its default IRQ for your modem. Go to your computer manufacturer’s manual.

9


X

•

Find out which socket is COM1 and which is COM2.

•

If nothing is plugged into either port, you may choose either of the ports to disable.

Your computer manufacturer’s manual will tell you how to disable the COM port.

•

If one port does not have anything plugged into it, note if the port is COM1 or COM2.

This is the port you’ll want to disable for your modem.

•

If both ports are being used, you may be able to attach one of the plugged-in accessories elsewhere so that you can disable its COM port. The accessory will not work once its port is disabled.

If you’ve disabled COM1, you can now use the COM1/IRQ4 setting. Write it down somewhere where it will be handy during software installation. Go to “How to Change the Modem’s Settings” (on this page).

If you’ve disabled COM2, you can now use the COM2/IRQ3 setting. Write the setting down somewhere where it will be handy during software installation.

How to Change the Modem’s

Settings

1. Always touch an unpainted metal part of your computer (the back is usually unpainted) to discharge static electricity before handling the modem. Static can damage your modem. Then take the modem out of its plastic bag.

2. Find the COM and IRQ jumper shunts

(small black plastic pieces) on your

10


X modem’s jumper pins (see the following diagram).

3. To change the COM port and IRQ settings, you need to reposition the jumper shunts on the COM port and IRQ pins. To do this, lift the jumper shunts off the pins.

TIP: Grasp the jumper shunts with a tweezers or needle-nosed pliers. DO

NOT grasp too firmly, as you may crush the jumper shunts. If a jumper shunt seems stuck, gently rock it back and forth as you lift. Do not touch any other part of the modem or your computer with the tweezers/pliers. A jumper shunt needs to be sitting on both jumper pins in order to effectively set the modem to the desired setting.

11


X

4. Move the jumper shunt to the new setting.

•

The COM port setting can involve one to three shunts. The four possible COM port settings are as follows:

0 1 SEL

0 1 SEL

How to Insert the Modem into the Computer

COM 1

COM 3

0 1 SEL

COM 2

COM 4

0 1 SEL

•

Unlike most COM port settings, the

IRQ setting involves only one jumper shunt. Simply move the jumper shunt to the pins labeled with the IRQ you need.

NOTE: Before installing your modem, write its serial number somewhere where it will be handy during software installation. (You’ll find the serial number underneath the bar code on the white sticker on the modem and on the outside of the box the modem came in.) If you ever need to call our customer support department, a customer support representative will ask you for the serial number. This will help him or her identify your modem.

12

1. Turn off your computer and unplug it from the electrical outlet.

2. Unplug any peripheral devices (printer, monitor, keyboard, mouse, etc.) from the computer.


X

3. Remove the screws from your computer’s cover and then remove the cover, as shown in the following diagrams. Your computer may differ in appearance from these diagrams, but the basic principle for removing the cover should be the same.

Contact your computer manufacturer or review their manual if you need further instructions.

TIP: Before you unplug anything, label the cords or make a sketch of how things are connected. This can be helpful when you plug things back in later.

CAUTION : To avoid the risk of electric shock, make sure your computer and all peripheral devices are turned off and unplugged.

13


X

4. Find an empty ISA expansion slot at least as long as the gold edge of your modem.

(ISA slots have black plastic grooves lined with silver.) Unscrew and remove the expansion slot cover (the long narrow piece of metal that keeps dust from entering through the opening perpendicular to the slot). Be careful not to drop the screw into the computer. You will need it later to screw the modem into place.

5. Holding the modem at each corner, with the gold edge facing the slot, push the modem down as gently as possible until it snaps into the expansion slot. (NOTE: The drawings show horizontally aligned expansion slots.

Some computers have vertically aligned slots. The instructions apply to both styles.)

You need to apply a little pressure to seat the modem properly. Sometimes a gentle back-and-forth motion helps to fit the

14


X modem all the way into the slot. If you feel resistance, the modem may not be properly lined up with the slot. Do not force it into the slot. Remove the modem and try again.

8. If you currently have a phone plugged into the wall jack you plan to use for the modem, disconnect the phone’s cord from the jack.

6. Once the modem is in place, fasten it firmly using the screw that you removed in step 4.

7. Replace the computer’s cover and fasten it with the screws you removed in step 3.

WARNING : The phone jack you use must be for an ANALOG phone line (the type found in most homes). Many office buildings have digital phone lines. Be sure you know which type of line you have. The modem will be damaged if you use a digital phone line.

9. Plug one end of the phone cord that came with the modem into the TELCO jack at the rear of the modem. Plug the other end of the cord into the wall jack.

10. If you wish to use a phone through the line the modem uses (when the modem is not in use), plug your phone’s cord into the modem’s PHONE jack.

15


X

13. If you have your modem set to

COM1/IRQ4 or COM2/IRQ3, go to

“Software Installation and Testing” on page

33. If you have your modem configured to any other setting, open Program Manager and double-click the Main icon.

NOTE: You cannot use the modem and a phone at the same time if they share the same telephone line.

11. Plug the microphone included with your modem into the MIC jack on the modem.

12. To enhance the modem’s full-duplex speakerphone capabilities, plug a set of powered external speakers (not included) into the SPEAKER jack on the modem.

16


X

14. Double-click the Control Panel icon.

16. If it’s not already selected, click the COM port for your modem. Then click Settings.

15. Double-click the Ports icon.

17. Click Advanced.

17

19. Click OK.


X

18. In the Interrupt Request Line (IRQ) box, select the IRQ that ComTest recommended.

You will see a brief series of screens after the preceding screen. Click OK on each screen until you see a screen with a Close button.

Click Close to exit Program Manager.

You are now ready to install the software on the Connections CD-ROM (included with your Sportster modem). Turn to “Software

Installation and Testing” (page 33) for detailed information about installing the software, registering the modem, and trying out your modem by faxing U.S. Robotics.

18

M

ODEM

I

NSTALLATION WITH

W

INDOWS

®

95

You will need these items from your

Sportster

™

modem box:

Since your new Sportster is a “Plug and Play” device, Windows 95 may be able to detect your modem automatically after you plug it into your computer. The operating system should do all the work of recognizing the modem for you.

Plus:

modem

Connections

™

CD a screwdriver (not included)

phone cord microphone

How to Prepare for Plug and

Play Installation

1. Touch an unpainted metal part of your computer (the back is usually unpainted) to discharge static electricity. Static can damage your modem.

2. Take the modem out of its plastic bag.

19

3. Find the jumper shunts (small black plastic pieces) on the COM port and IRQ jumper pins on your modem. They should be in roughly the area indicated in the following illustration.

M ODEM I NSTALLATION WITH W INDOWS 95 jumper shunts so they are hanging as in the following diagram.

When doing a “Plug and Play” installation, the jumper shunts should be placed so that they are hanging from single jumper pins rather than on pairs of pins. Move your

20

NOTE: If you need to move the jumper shunts, grasp them with a tweezers or a needlenosed pliers. DO NOT grasp too firmly, however, or you may crush the jumper shunts. If a jumper shunt seems stuck, try gently rocking it back and forth as you lift.

How to Insert the Modem into the Computer

M ODEM I NSTALLATION WITH W INDOWS 95

1. Turn off your computer and unplug it from the electrical outlet.

2. Unplug any peripheral devices (printer, monitor, keyboard, mouse, etc.) from the computer.

NOTE: Before installing your modem, write down its serial number.

(You’ll find the serial number underneath the bar code on the white sticker on the modem and on the outside of the box the modem came in.) If you ever need to call our customer support department, a customer support representative will ask you for the serial number. This will help him or her identify your

Sportster modem.

TIP: label them or make a sketch of how they are connected. This can be helpful when you plug them back in later.

Before you unplug any cords,

CAUTION : To avoid risk of electric shock, make sure your computer and all peripheral devices are turned off and unplugged from electrical outlets.

3. Remove the screws from your computer’s cover and then remove the cover, as shown

21

22

M ODEM I NSTALLATION WITH W INDOWS 95 in the following diagrams. Your computer may differ in appearance from these diagrams, but the basic principle for removing the cover should be the same.

Refer to your computer manufacturer’s manual if you need further instructions.

4. Find an empty ISA expansion slot that’s at least as long as the gold edge of your modem. (ISA slots are black plastic grooves lined with metal.) Unscrew and remove the expansion slot cover (the long narrow piece of metal that keeps dust from entering through the opening perpendicular to the slot).


5. Holding the modem at each corner, with the gold edge facing the slot, push the modem down as gently as possible until it snaps into the expansion slot. (NOTE: The following diagram shows horizontally aligned expansion slots. Some computers have vertically aligned slots. The instructions apply to both styles.)

You need to apply a little pressure to seat the modem properly. Sometimes a gentle back-and-forth motion helps fit the modem all the way into the slot. If you feel resistance, the modem may not be properly lined up with the slot. Do not force it into the slot. Remove the modem and try again.

6. Once the modem is in the slot, fasten the modem firmly into place using the screw that you removed in step 4.

7. Replace the computer’s cover and fasten it with the screws you removed in step 3.

8. Locate the wall jack you plan to use for the modem. If you have a phone plugged into

23

M ODEM I NSTALLATION WITH W INDOWS 95 this jack, disconnect the telephone cord from the jack.

NOTE: You cannot use the modem and a phone at the same time if they share the same telephone line.

WARNING : The phone jack you use must be for an ANALOG phone line

(the type found in most homes). Many office buildings have digital phone lines. Be sure you know which type of line you have. The modem will be damaged if you use a digital phone line.

11. Plug the microphone included with your modem into the MIC jack on the modem.

12. To enhance the modem’s full-duplex speakerphone capabilities, plug a set of powered external speakers (not included) into the SPEAKER jack on the modem.

9. Plug one end of the phone cord included with the modem into the TELCO jack at the rear of the modem. Plug the other end of the cable into the wall jack.

10. If you wish to use a phone through the line the modem uses (when the modem is not in use), plug your phone’s cord into the modem’s PHONE jack.

24


13. Plug the power cords, cables, and peripherals back into the computer and turn on the computer.

Installing the Modem

Drivers

NOTE: If you wrote “950b” on page 2 of this User’s Guide, go to

“Installing Modem Drivers with

Windows 95 Version 950b” on page 29.

Otherwise, follow these instructions.

Installing Modem Drivers with

Windows 95 Versions 950 and 950a

1. When Windows 95 restarts, it should detect the modem. If it does, you will see the following screen.

Click Driver from disk provided by

hardware manufacturer. Then click OK.

NOTE: If this screen does not appear, go to the section titled “When

Plug and Play Fails” on page 95.

25


2. When you see this screen, insert the

Connections CD into your CD-ROM drive and type D:\ to replace the A:\. (NOTE: If your CD-ROM drive has a different letter name, type that letter instead of D.)

3. Once Windows finishes loading the information from the CD-ROM, you should verify that the modem installation was a success. When your desktop returns, click the Windows Start button and point to

Settings. Then click Control Panel.

Click OK. Windows will load the modem’s drivers.

26


4. Double-click the Modems icon (circled in the screen image below).

5. In the “Modems Properties” screen, you should see “Sportster 33600 Voice Internal

PnP” listed.

27


This means the installation was a success.

Click OK.

NOTE: If you do not see your modem listed in the preceding screen, the Plug and Play installation was unsuccessful. Please refer to

“When Plug and Play Fails” on page

95.

6. Next, click the Diagnostics tab at the top of the “Modems Properties” screen. Write down the COM setting for your modem.

(NOTE: Your screen may show a different setting than that shown in the following screen.) You will need to know this setting when you install RapidComm Voice.

Turn to “Software Installation and Testing”

(page 33) for detailed information about installing RapidComm Voice, registering the modem, and trying out your modem by faxing U.S. Robotics.

28


Installing Modem Drivers with

Windows 95 Version 950b

1. When Windows restarts, it should detect the modem (see following screen image).

Insert the Connections CD and click Next.

2. When you see the following screen, click

Finish.

NOTE: If this screen does not appear, go to the section titled “When

Plug and Play Fails” on page 95.

29


3. Once Windows 95 has installed the modem’s drivers, you will see the following screen. This screen tells you which communications port your modem is installed to. (NOTE: Your screen may show a different COM port.) Make a note of the COM port setting. You will need this information later when you installing the software on the CD-ROM. Remove the

CD from your CD-ROM drive and click

OK. Windows will restart.

4. Once Windows restarts, you should verify that the modem installation was a success.

When your desktop returns, click the

Windows Start button and point to

Settings. Then click Control Panel.

30


5. Double-click the Modems icon (circled in the screen image below).

6. In the “Modems Properties” screen, you should see “Sportster 33600 Voice Internal

PnP” listed.

31


This means the installation was a success.

Click OK.

NOTE: If you do not see your modem listed in the preceding screen, the Plug and Play installation was unsuccessful. Please refer to

“When Plug and Play Fails” on page

95.

7. Next, click the Diagnostics tab at the top of the “Modems Properties” screen. Write down the COM setting for your modem.

(NOTE: Your screen may show a different setting than that shown in the following screen.) You will need to know this setting when you install RapidComm Voice.

Turn to “Software Installation and Testing”

(page 33) for detailed information about installing RapidComm Voice, registering the modem, and trying out your modem by faxing U.S. Robotics.

32

S

OFTWARE

I

NSTALLATION AND

T

ESTING

Software Installation and

Registration Using the

Setup Wizard

This section guides you through the U.S.

Robotics Setup Wizard, the Connections

™

CD-ROM interface, and the installation of

RapidComm

™

Voice fax/data/voice software.

It also shows you how to register and test your new Sportster modem.

RapidComm Voice fax/data/voice software simplifies sending and receiving faxes directly from your computer desktop. You can build your own fax directory, send faxes to specified groups of phone numbers, request individual cover pages when necessary, and send individual faxes without exiting your word processing program.

Additionally, RapidComm Voice software lets you connect to BBSs and other online data providers. Take advantage of this access to enter a new world of information and entertainment.

NOTE: The following instructions apply to Windows 3.x and Windows 95 users. However, only Windows 95 screens are shown.

NOTE:

If you have an older version of RapidComm Voice software installed on your system, uninstall it before continuing.

33

S OFTWARE I NSTALLATION AND T ESTING

1. From the Windows 95 desktop, click the

Start button and then click Run.

3. You will briefly see a screen that looks like this.

2. In the text box, type D:\setup.exe. (If your

CD-ROM drive has a letter name other than D, type that letter in place of D.)

4. When you are asked if you wish to run the

Setup Wizard, click Yes.

34


5. This is the Setup Wizard’s “Welcome” screen. After reading the screen, click

Next.

NOTE: Check the COM port setting against the setting you wrote down during the hardware installation.

6. When you see the following screen, select your modem from the list and select the correct COM port setting in the Port box.

Then click Next.

35


7. When you see the next two screens, fill in the blank boxes with the appropriate information, using the TAB key to move between fields. Click Next on each screen when you have filled in all of the necessary information.

8. You will see the following screen as the

Setup Wizard creates a U.S. Robotics

Connections program group.

9. Next, the Setup Wizard looks for Netscape

Navigator on your system.

If the Setup Wizard does not find Netscape

Navigator, it searches for Microsoft’s

Internet Explorer. If the Setup Wizard does not find Internet Explorer, it will automatically install the application later in the Setup Wizard process.

36


10. The next screen introduces the U.S.

Robotics Registration Wizard. After you read the screen, click Next. Read through each of the next two screens and verify or correct the information you typed earlier.

Click Next on each screen to move on.

37


11. When you see this screen, you are ready to register your new modem. Click By

Modem. We recommend you choose the

By Modem option because it’s a great way to verify that your Sportster modem is correctly installed.

12. When you see this screen…

•

If you need to dial a prefix (such as 9) to make a call outside your building, type the prefix before the 1 in the Prefix box and then click Dial. If the modem still does not dial the number properly, you may need to insert a comma between the prefix and the 1 to force the modem to pause.

38


•

If you do not need to dial a prefix, simply click Dial.

13. You will see a screen indicating that the registration information has been sent (see circled text in the screen below).

NOTE: If the Setup Wizard detected

Internet Explorer on your system during the setup process, your computer will launch the Connections CD-ROM when you click

OK. Continue at step 15.

14. The next screen indicates that the Setup

Wizard is finished. Click OK to launch the

Connections CD-ROM.

If the Setup Wizard DID NOT detect

Internet Explorer on your system earlier in the setup process, it will launch the Internet

Explorer installation utility after you click

OK. When you see the following screen, click Install Internet Explorer and follow the on-screen instructions to complete the installation of the software.

39


Windows 3.x users: Windows will restart. When your desktop reappears, you will see a Connections icon (shown below) in the Connections program group.

Double-click the icon to launch the CD.

At the end of the installation process, you will see the following screen. Click Yes.

40

Windows 95 users: Windows will restart and the Connections CD will launch automatically upon restart.


15. When the main Connections menu appears, click Business & Productivity on the menu on the left hand side of the screen

(circled below).

16. On the Business & Productivity menu is a RapidComm Voice button (circled in the following screen shot). RapidComm Voice is the fax/data/voice software you can use to send faxes directly from your desktop, transfer files electronically, set up multiple voice mail boxes, or dial into a BBS. Click

RapidComm Voice.

41


17. The next screen contains another menu on the right hand side of the screen. Included on the menu is a Learn More & Get

Software button (circled in the screen image below). Click this button.

18. The next screen displays information about the RapidComm Voice software. When you are ready to install the RapidComm

Voice software, click Install (circled in the lower left hand corner of the following screen image).

42

S OFTWARE I NSTALLATION AND T ESTING directory, type that location in the text box before clicking Install.

NOTE: If you are using Netscape

Navigator to view your Connections CD-

ROM, you may be asked to save the application’s installer to your computer when you click the Install button. Note the installer’s file name and its location on your computer. To run the installer or demo, find the file on your computer and double-click it. The installer will start.

19. The next screen is the first of the

“RapidComm Voice Setup” screens. When this screen appears, make sure the location shown in the text box is where you would like the files copied to and then click

Install. If you wish to copy the

RapidComm Voice files to a different

20. You will see this screen as files are copied.

43


This screen marks the end of the

RapidComm Voice installation. Click

OK to return the Connections.

21. When you see this screen, click either

44

•

If you click Yes, every document you print will be treated as a fax unless you change the printer selection in the program from which you are printing.

•

If you click No, RapidComm Voice will not be selected as the default printer. When you want to the printer in the program from which you are printing.

23. Click Exit (circled in the following screen image).


24. Restart Windows by clicking the Windows

Start button and pointing to Shut Down.

Click Restart the Computer? on the

“Shut Down Windows” screen. Then click

Yes.

26. The following is the first “RapidComm

Voice Setup Wizard” screen. After you read the screen, click Next.

25. When your desktop appears, click

Windows Start. Point to Programs. Then point to RapidComm Voice.

45

27. When you see this screen, verify the information shown and then fill in the Data box (if you have a third phone number just for your modem) and the Local Area

Code box. Then click Next.


28. After you verify the information on this screen, click Next.

46


29. Select the correct modem in the text box on the following screen. Then click Next.

30. The next screen allows you to select single or multiple mailboxes for your personal voice mail system. Click Single or

Multiple and then click Next.

47

31. When you see this screen…


•

If you do not want RapidComm Voice to start every time you start Windows, simply click Finish.

32. You will see this screen.

48

•

If you want the RapidComm Voice program to launch at Windows startup, select the box to the left of Run

RapidComm Voice at Windows

startup. A check will appear in the box.

Then click Finish.

This is the main RapidComm Voice screen.

To send your first fax, keep this screen open. (After this initial run, RapidComm

Voice will not need to be running in order to send a fax.)

Sending Your First Fax

Using RapidComm Voice software, you can send and receive faxes directly from your computer and eliminate the need for a fax machine. Once you learn the basics of sending faxes, you can learn more involved fax

S OFTWARE I NSTALLATION AND T ESTING functions, such as sending documents to groups of numbers at assigned times and how to transfer data files. These more advanced functions are explained in the electronic

RapidComm Voice manual on your

Connections CD. This chapter will walk you through sending your first fax.

1. Open an application in which you can create documents that you might want to fax (e.g., a word processing application).

Create a document containing only a sentence or two. Name the document

tester. Keep the document open.

2. From the File menu, click Print.

3. Select RapidComm Voice as the printer.

This can be changed in most Windows applications in the Print or Printer Setup dialog box.

4. Click OK or Print (whichever button you click in your application to indicate that you are ready to print) in the Print dialog box.

49


5. When you see the following screen, fill in the necessary information in the text boxes.

For testing purposes, send your “tester” document to the 3Com fax number, 847-

676-3559.

NOTE: If you need to enter a prefix (such as 9) to dial a number outside your building, type the prefix before the fax number in the Fax number field.

When you finish, click Send Fax.

6. You will see a series of screens as the fax is being transmitted. When the fax has been successfully transmitted, you will see a screen that looks like this.

50


Congratulations —you are now ready to start using your Sportster modem!

Go to the electronic RapidComm Voice manual on your Connections CD for more detailed instructions on sending faxes and other things you can do using your Sportster modem and RapidComm Voice software.

51

I

NSTALLING

O

THER

F

AX

/D

ATA

S

OFTWARE

Your modem was designed for and tested using a wide range of communications software packages. This section will guide you through some of the details you may need to know when installing communications software packages other than RapidComm Voice

(included on the Connections CD-ROM).

Initialization String

For hardware flow control, a fixed serial port rate, and full result codes, type AT&F1 and then press ENTER. If you must use software flow control, type AT&F2 and then press

ENTER.

Type of Modem

Most communications software programs will ask you to select the type of modem you are using. Select a U.S. Robotics Sportster high speed modem. If that selection is not listed, pick Courier Dual Standard, V.32bis, or V.

34.

Flow Control

For hardware flow control (highly recommended), select RTS/CTS. For software flow control, select XON/XOFF.

You may need to disable the flow control

(hardware or software) that you are not using.

52

U.S. R

OBOTICS

M

ODEM

U

PDATE

W

IZARD

Your Connections

™

CD-ROM includes the U.S.

Robotics Modem Update Wizard. This software is designed to quickly update your modem, whether to a newer version of its current code or to 3Com’s revolutionary new x2

™

technology.

You can update your modem in any of the following 3 ways:

NOTE: Complete the instructions in the Software Installation and Testing section of this manual before installing the Modem Update Wizard.

33.6 K to 33.6 K (update) = FREE

33.6 K to 56 K (upgrade) = $FEE

*

56 K to 56 K (update) = FREE

* Fee for upgrades is subject to change.

NOTE: These instructions pertain to

Windows 3.x and Windows 95. However, only Windows 95 screen shots are shown unless the process for Windows 3.x users differ significantly.

NOTE: You can obtain this software from our BBS (847-982-5092) or from our

World Wide Web page (www.3com.com) if you do not have a Connections CD-ROM.

Installation

1. Insert the Connections CD-ROM into your

CD-ROM drive.

53

U.S. R OBOTICS M ODEM U PDATE W IZARD

2. Click the Windows Start menu and point to

Programs. Point to U.S. Robotics

Connections. Then click Connections.

3. From the main Connections menu, click

Customer Support (circled in the following screen shot).

NOTE: Windows 3.x users launch the

CD-ROM by clicking the Connections icon in the Connections program group.

54

4. When the Customer Support menu appears, click Modem Update Wizard (circled in the following screen shot).


5. Next, click Learn More & Get Software

(circled in the following screen shot).

55


6. In the following screen, click Install (circled below).

7. This launches the U.S. Robotics Modem

Update Wizard Installer. The screen that follows is the welcome screen for the installer.

After you read this screen, click Next.

56


8. The next screen indicates where the installer will store the files for the Update Wizard. If the indicated location is acceptable, click Next.

Otherwise, click Browse to find an acceptable directory.

9. You will see the following screen for a moment as the installer creates the Modem Update

Wizard program group.

10. This screen indicates that the setup is complete. Click OK.

57

Operation

1. Click the Windows Start button. Point to

Modem Update Wizard.


3. This brings up the license agreement. After reading the license agreement, click Accept to continue.

Programs. Then point to U.S. Robotics

Modem Update Wizard. Finally, click

2. After you read the “Welcome” screen, click

Next.

58


4. The software will now detect any modems installed on your system. When the detection phase finishes, you will see the following screen

(the modems shown on your screen may differ). Click the modem you wish to upgrade and then click Next to continue.

5. The program will now determine if the selected modem is software upgradable.

Non-Upgradable Modems

If your modem IS NOT software upgradable, the program will display the following screen.

•

Click U.S. Robotics if your modem is a

U.S. Robotics modem to learn more about your upgrade options.

59


•

Click Other to learn more about how to purchase a U.S. Robotics x2 modem.

Upgradable Modems

If the modem IS software upgradable, you will see the following screen.

to upgrade a 33.6 kbps modem to 56 kbps code or click Update my modem’s code to update your modem with the most recent version of its original code. Then click Next.

6. The next screen you will see is the order information screen. Users who are purchasing a 56K upgrade will see a screen that includes a credit card information query. Users who are updating their modem’s code will see a personal information query screen. Fill in the screen with the appropriate information and then click Next.

60

Click Dial U.S. Robotics (which should be the default selection) in the pull-down menu.

Click Upgrade to x2 Technology if you wish


7. The following screen dials the U.S. Robotics

Update Server. Click Tone or Pulse dialing as necessary. If you normally dial a prefix (such as 9) to dial out on your phone line, type that prefix before the 1 in the Prefix box. Then click Dial.

NOTE: Your screen may show a different number in the Number field.

61


8. Once connected, the server will compare available upgrades with the current code in your modem. If they differ, the server will automatically initiate the download procedure.

NOTE: Users purchasing a 56K upgrade are asked if the charge is acceptable (see the following screen image). Unless you have already been charged for an upgrade, click Yes to continue. If you have already been through this process once before,

DO NOT click Yes. Click No and call Customer

Support at 847-982-5151. (The price of the upgrade is subject to change and includes applicable taxes.)

NOTE: If you do not have the most up to date .inf file for your modem (the file that helps Windows correctly identify your modem), you will see the following screen as the Modem Update Wizard automatically downloads the file.

62


9. You will see this screen as the Wizard downloads the file for your modem.

WARNING!

To avoid the risk of damaging your modem, DO NOT turn off the modem while it is being updated.

11. When updating is complete, the progress bar will be full and an “Update/Upgrade

Complete” message appears. Click Next.

10. When the download is complete, the modem disconnects from the server. The words

“Downloading file…” change to “Upgrading

…” or “Updating …”, depending on whether you are upgrading or updating your modem. A new progress bar appears. This indicates that your modem’s code is being updated.

63

12. You will see a “Congratulations!” screen.

Click Details.


13. Click OK once you verify that the process was a success. When you return to the

“Congratulations!” screen, click Finished.

Congratulations!

Enjoy the benefits of your updated Sportster modem!

64

U

SING

M

ODEM

S

TATION

What Does Modem Station

Do?

♦

Modem Station provides a simple to use interface that makes communicating with your modem even easier.

♦

Modem Station allows you to point and click your way through configuration.

♦

Modem Station can automatically detect your modem and provide you with all the technical information you need, whenever you need it!

Why Modem Station?

♦

Modem commands can be confusing and difficult to memorize.

♦

Communications software often needs technical information about your modem.

♦

You may want to “tweak” your modem for optimum performance.

♦

You’d rather be surfing the Internet.

Installing Modem Station

If you did not install Modem Station when you first installed the Connections CD, please follow these instructions.

1. Insert the Connections CD into your CD-

ROM drive.

2. Double-click the My Computer icon on your desktop.

3. Double-click the CD-ROM icon.

4. Double-click the USR Tools folder.

5. Double-click the umssetup icon.

65

6. You will be asked whether you wish to install Modem Station. Click Yes.

7. Wait a few moments for the Installation

Wizard to load.

8. After reading the information on the

“Welcome” screen, click Next.

U SING M ODEM S TATION

9. When you see this screen, click Next to accept the default directory or click

Browse to change directories.

66

10. Click Next on the following screen to

U SING M ODEM S TATION accept the default program folder. You can place Modem Station in an existing folder by selecting one from the list.

11. When you see the following screen, click

Finish to complete the installation.

If this is the first time you’ve installed

Modem Station, you may be asked to restart your computer.

67


Starting Modem Station

1. If you didn’t start Modem Station from the

Setup program, please start it now.

2. Click Windows Start button and then point to Programs. Click U.S. Robotics

Modem Station (or the folder you selected during installation).

3. Click the Modem Station icon. This brings up the main menu.

68


The main menu gives you direct access to the following options:

♦

DETECT NEW MODEMS

♦

TERMINAL

♦

MODEM CONFIGURATOR

♦

ABOUT

♦

CONTACT/SUPPORT

DETECT NEW MODEMS

This option detects US Robotics modems installed on your system and shows what

COM port they are using. Click this option if you are running Modem Station for the first time, if you are changing modems, or if you simply need to know what port your modem is using.

TERMINAL

Terminal allows you to send commands directly to your modem and displays the responses. You can use Terminal to dial up

BBSs. In addition, you can configure your modem using Terminal. However, it is much easier to use the Modem Configurator.

MODEM CONFIGURATOR

Modem Configurator provides an easy-to-use interface for entering hard to remember commands. Use Modem Configurator for troubleshooting, initial configuration, and tuning your modem for optimum performance. Using the options available in Modem Configurator, you can control nearly every aspect of your modem’s performance. We will discuss

Modem Configurator’s options in more detail in later sections.

ABOUT

The About option provides copyright and version information.

69


CONTACT/SUPPORT

This option details how to get in touch with

U.S. Robotics.

Using Detect New Modems

1. Click Detect New Modems to bring up the following screen.

TIP: For your convenience, we provide many on-line support avenues. For specific questions, our fax-on-demand service is a good place to start. You can download FAQs, software, and help files from our Web sites and BBS, or receive individualized support via [email protected]. Type 0000 (4 zeroes) in the subject line of your e-mail.

The screen consists of four columns, one for each possible COM port on a PC. You can scan a specific port(s) by selecting the checkbox for that port.

70


2. Click Scan to have Modem Station check for installed modems. This may take a few moments.

3. When the scan finishes, you will see the following display. Your display may differ depending on the type and number of modems installed.

If your modem is installed and configured correctly, Modem Station will find the modem and display make and model information under the assigned port. All currently active ports should display “Port

OK” under the heading. If a port displays a

“Port Error”, it usually means that the port is disabled in system setup.

NOTE: Different systems and

BIOSes use different methods of disabling COM ports. As a result, we cannot provide support for enabling COM ports. Please refer to your system’s documentation or contact the manufacturer of your system for further information.

71


If you look at the information for the port your modem is using, you will see three buttons.

These allow you to access Terminal and

Modem Configurator without going back to the main menu. Extended Information provides detailed information about your modem, previous connections, firmware dates, etc. This next section details using the Terminal option.

Using Terminal

You can access Terminal from either the Main menu or the Detect New Modems screen.

Clicking Terminal brings up the Terminal window.

In addition to allowing direct entry of modem commands, the Terminal window also allows you to dial into Bulletin Boards, listing services, and other online services.

72


NOTE: Modem Station’s

Terminal window is provided primarily for troubleshooting convenience. If you frequently use

BBSs, you will probably want to use a separate, full-featured

Terminal program like the one provided in our RapidComm software.

On the lower part of the Terminal screen, you will see the COM port your modem is currently using. To select another modem, simply click on the arrow and select that modem’s assigned port.

To the right of the port settings are the port speed settings. Port speed is the speed at which your computer sends data to the

73

U SING M ODEM S TATION modem. We will discuss port speed settings in detail later in this section.

Terminal includes a basic auto dialer.

To have Terminal dial a number for you, click

Dial to bring up the “Dial” screen.

You need to tell the Dialer a few things about your phone system, such as whether it uses tone or pulse dialing, what digit, if any, you need to dial to get an outside line, and whether the dialer should wait between dialing that digit and the rest of the number. Once you provide this information, simply enter the phone number as if you were dialing a telephone. Click Dial

Now to dial the number.

You can end a call by clicking Hang Up at the bottom of the screen.

When you are finished using Terminal, click

Exit to return to the screen you accessed it from.

Using Modem Configurator

You can access Modem Configurator from either the Main menu or the Detect New

Modems screen.

Click Modem Configurator to bring up this menu.

74


The Modem Configurator menu gives you access to the following options:

♦

DATA CONTROL

♦

CONNECTION CONTROL

♦

MODEM TO COMPUTER

♦

CONNECTION RATES

♦

DIALING/ANSWERING

♦

STORED NUMBERS

♦

RESTORE DEFAULTS

♦

EXIT

Data Control

This is the “Data Control” screen.

The “Data Control” screen allows you to assign the following basic communications settings:

♦

PORT SPEED

♦

PARITY

♦

STOP BITS

♦

WORD

♦

FLOW CONTROL

♦

SERIAL PORT RATE

For information on using these settings, please refer to the “Glossary” at the back of this manual.

Click Help for quick definitions of the terminology used in this screen.

In the upper left-hand corner of the screen, you will see the data control commands currently in use.

75


Once you have entered the Data Control settings, click Save to Modem. This stores the settings so that you do not have to re-enter them.

This screen also displays the default DIP switch settings.

CONNECTION CONTROL

This is where you adjust your modem’s connection and transmission settings.

Click Connection Control to bring up this screen.

TECHNICAL STUFF: DIP switches are tiny switches that control a few basic functions on some external modems. On modems without DIP switches, these functions are handled by modem commands.

Click Exit to return to the Modem

Configurator menu.

In the upper left hand corner of this screen, you will find the current Connection Control settings.

76


Use the “Connections Control” screen to configure the following settings:

♦

DATA TERMINAL READY (DTR)

♦

ERROR CORRECTION

♦

DATA COMPRESSION

♦

CARRIER DETECT

For detailed information about these settings, refer to the “Glossary” or the “Technical Quick

Reference” sections of this manual.

Once you have configured your Connection

Control settings, click Save to Modem to save your settings TIP: On external modems, receiving a Data Terminal Ready signal causes the TR light to light up.

Click Help for quick definitions of terminology used in this screen.

Using Modem to Computer

These settings control how your modem and computer communicate with each other. They control what you see on your terminal screen and how results are displayed.

77

If you look in the upper left hand corner of the display, you will see the commands currently in use.

The “Modem to Computer” screen allows you to configure the following settings:

♦

LOCAL ECHO

♦

RESULT CODES

♦

RESULT CODE PREFERENCES


TIP: If you type ATDT and see

‘AATTDDTT’ on your screen, it is possible that both your software and modem have Local Echo set to ‘ON’.

Turn Local Echo ‘OFF’ on EITHER the modem or the software to solve this problem.

For details on using the commands in this screen, refer to the “Glossary” or “Technical

Quick Reference” sections of this manual.

Click Help to see quick definitions of terminology used in this screen.

This screen also includes a chart of the ways result codes can be displayed. Click Codes to view a chart of the display options.

Once you configure your settings, click Save

to Modem to save your choices.

78

CONNECTION RATES

The “Connection Rates” screen allows you to configure modem speeds and protocols.

WARNING! Use caution

U SING M ODEM S TATION when changing connection settings. Improper settings may cause your modem to function incorrectly, disconnect, or fail to connect at all.

In the upper left hand corner of the screen you will see the current connection commands.

This screen allows you to configure the following settings:

♦

MODULATIONS

♦

V.34 SYMBOL RATES

♦

SPEEDS

Again, once you have selected your settings, click Save to Modem to save them.

When you are finished, click Exit to return to the Modem Configurator menu.

Please refer to the main body of the manual and the “Glossary “for detailed information about the terminology and settings used in this screen.

Click Help for quick definitions of terminology used in this screen.

79


DIALING/ANSWERING

The next screen allows you to adjust how your modem initiates and receives calls.

TECHNICAL STUFF:

“Negotiation” is the noise we hear when two modems connect. The modems exchange information about their respective protocols and configurations. Once they agree on the fastest protocol they can both handle, transmission begins.

Using this screen, you can configure the following dial settings:

♦

WAIT FOR CARRIER

♦

AUTO-ANSWER # OF RINGS

♦

SPEAKER OPERATION

♦

DIALING METHOD

♦

SPEAKER VOLUME

STORED NUMBERS

The “Stored Numbers” screen displays the phone numbers currently stored in your modem’s memory.

Use this screen to edit or add numbers stored in the modem’s memory.

80

To store a number in your modem’s memory, simply click in one of the entry boxes. Type in the phone number exactly as you would dial it.

NOTE: Position Zero has a special feature.

You can set your modem to automatically dial this number when your computer is turned on or when it is reset.

This is very useful if you are using your modem with a “dumb terminal” or know that you need to connect to a specific bulletin board or listing service.


You can change stored numbers by highlighting them and then typing the new numbers in their place. Once you store your numbers, you can dial them by entering this command from

Terminal Mode:

ATDS0, ATDS1, ATDS2, etc.

Your U.S. Robotics modem comes with one phone number already stored in Position 0. If you haven’t changed the default, typing

ATDS0 will automatically dial the U.S.

Robotics BBS. You will want to change this if you are using a dumb terminal or online listing service, of course.

Once you enter the numbers you wish to store, click Save to Modem to store them. Click

Exit to return to the Main menu.

The last option, Restore Defaults, resets your modem to factory specifications. This option is

81

U SING M ODEM S TATION available from many of the screens within

Modem Station. When you click Restore

Defaults, you will see a confirmation screen asking if you are sure you want to restore defaults. Click OK to proceed.

TIP: Restore Defaults will set your modem back to factory specifications. It is a good place to start when troubleshooting.

Using the Extended

Information Screens

The “Extended Information” screens provide important and useful information about your modem. Unfortunately, some of this information is very complex.

We devote a separate section to the Extended

Information screens so that we can explain what you’ll see (and why it is important to you) as fully as possible.

There are a series of commands used to obtain detailed information from U.S. Robotics modems. Extended Information provides a convenient way to get that important information without memorizing the commands.

From the “Detect New Modems” screen, click

Extended Information.

The “Extended Information” screen provides access to the following information about your modem:

♦

ROM CHECKSUM

♦

PRODUCT

♦

ACTIVE PROFILE

♦

STORED PROFILE

82


♦

CONFIGURATION PROFILE

♦

LINK DIAGNOSTICS

♦

VxD CONFIGURATION

♦

DIAL/SECURITY

Winmodem users will have access to VxD information via these screens.

Courier users will have access to Dial/Security information.

Click ROM Checksum to bring up the following screen.

Technicians use the ROM Checksum to verify information stored in the modem’s Read Only

Memory. You can check the ROM Checksum from any Terminal program by typing ATI1 and pressing ENTER. For information about the specific modem you are using, click

Product to bring up the next screen.

83


To see information about the profile in use, click Active Profile to bring up the next screen.

The “Product” screen displays the make and model of your modem. It is the equivalent of the ATI3 command.

Your modem is able to store two configurations or “profiles.” Only one can be active at any time.

84

This screen contains information about your modem’s current configuration. Starting from the top, you will see the make and model of your modem. Directly below that you will see basic commands currently in use. Below that are the current connection settings.

The two lines below the connection settings are the advanced commands currently in use.

Below them is a display of the contents of the

‘S-Registers’ for your modem. These registers are special programmable areas of your modem’s memory. They are used to store commands that are too complex to be handled by the standard (or ‘AT’) commands.

Just below that you will see the last number dialed. You can also see this information by typing ATI4 in a Terminal program and pressing ENTER.

The next option displays the “Stored Profile” screen. This screen shows the configuration stored in your modem’s NVRAM (special programmable memory). Note that any stored phone numbers are displayed on this screen as well. This is the equivalent of the ATI5 command. The information displayed is in the

U SING M ODEM S TATION same format as the “Active Profile” screen with the addition of stored phone numbers.

The next two screens contain information that our technical support representatives may need if you request support.

Click Configuration to bring up the first of these screens.

85

The “Configuration” screen displays the following information about your modem.

•

Product Type displays the information relating to the make and model of your modem.

•

Options displays the protocols available to your modem.

•

Fax Options displays your fax compatibility.

•

Clock Frequency displays the speed of the tiny “clock” that controls the timing of operations within the modem.

•

EPROM displays how much information can be stored in the EPROM (or

Supervisor) chip.

•

RAM displays how much memory your modem has for processing commands and internal functions.

•

Supervisor Date (or EPROM Date) displays the version date of the ‘firmware’ stored in the Supervisor chip. (The

86


Supervisor chip contains the special software used to control your modem’s functions.) If a support representative asks you for your Supervisor or EPROM date, look here.

•

DSP Date is the date of the ‘firmware’ that controls the DSP in your modem.

•

Supervisor and DSP rev (or revisions) are the equivalent of software version numbers.

TECHNICAL STUFF: The

Supervisor chip contains the commands that control your modem. The DSP controls execution of those commands.

The Supervisor chip needs orders from the DSP before it can carry out a command.

Click Link Diagnostics to bring up the “Link

Diagnostics” screen.


•

DAA Country displays the countries your modem is designed for. This is important because phone systems and telecommunications laws vary from country to country.

The “Link Diagnostics” screen displays statistics about your last connection. This screen is most often used as an aid in diagnosing connection failures, but it also can provide information about connection speeds and phone line conditions.

•

Modulation displays the speed and type of connection.

•

Carrier Frequency displays the electrical frequency of the carrier signal.

•

Symbol Rate displays the speed of the transmission.

•

Trellis Code, Nonlinear Encoding, Shaping, and Precoding all refer to methods of handling high speed data transmission.

•

The items followed by (dB), (-dB), (-dBm), and (msec) refer to variations in the modulation tones that actually carry the information.

87


The rest of the screen contains information about CRC errors, Block Errors (Blers), resent data, and other data. This information is very important if you experience problems transmitting or receiving data or if you suspect problems with your phone service.

Only our U.S. Robotics Winmodem

™ faxmodems use VxDs, or Virtual Device

Drivers. The Winmodem product uses special software (called a ‘driver’) to manage many of the functions handled by hardware in our other modems. If you are using a Winmodem, the

Extended Information menu will offer you the option of clicking on VxD to view information on the Winmodem driver. Please refer to your

Winmodem manual for detailed information on the Winmodem drivers.

Courier modem users will see a display of current Dialback/Security settings. Refer to

88 your Courier documentation for instructions on configuring these special features.

We hope that you enjoy exploring the world of information and entertainment your new

Sportster modem will open up for you and that

Modem Station will make using and configuring your new modem as simple as possible.

Remember: If you have any questions or problems, feel free to visit one of our many online forums.

For answers to specific questions, be sure to visit our World Wide Web support site at

www.usr.com/home/online/main.htm, or try our BBS (847-982-5092).

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PROBLEM DIAGNOSIS POSSIBLE SOLUTION

The computer or software will not recognize the modem.

Your modem might not be turned on.

Make sure the modem is turned on. The power switch is on top of external modems. The CS light on the front panel should be lit. If you installed an internal modem, it should power up when the computer is turned on.

When entering commands in a terminal program, type in all upper case (AT) or

You may not be entering all lower case (at).

modem commands in the proper manner while in terminal mode.

You may have a COM port/IRQ conflict.

WINDOWS 95 USERS: Uninstall the modem from your computer. In Device

Manager, determine what COM port and IRQ settings are free on your system.

Set the jumper shunts on your modem’s jumper pins to these free settings, using the diagrams below as a guide. If no IRQ setting is available, you may need to move a device off of an IRQ in order to free it for use by your modem.

0 1 SEL

0 1 SEL

COM 1

COM 2

IRQ

2 3 4 5 7

0 1 SEL

0 1 SEL

COM 3

COM 4

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T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES

PROBLEM

The computer or software will not recognize the modem (cont.).

The modem displays double characters on your monitor.

DIAGNOSIS

You may have a COM port/IRQ conflict (cont.).

Both the modem’s and software’s local character echoes are turned on.

The modem won’t go off hook to dial or doesn’t answer the phone.

You may have plugged your modem’s phone cord into a digital line.

You might have a bad phone cord connection to your modem.

POSSIBLE SOLUTION

Make sure you have the correct COM port and IRQ settings in your software and/or in the Windows Device Manager.

Disable Local Echo in your software OR on your modem (not both). Turn local echo off on the modem by typing ATE0 and pressing ENTER in your software’s terminal mode. To turn the local echo off in the software, refer to its documentation.

Plugging your modem’s phone cord into a digital phone line can damage the modem. Call your phone company if you are unsure whether or not your phone line is digital.

The phone cord should be plugged into the TELCO jack on the modem and an analog wall phone jack. The phone cord should not exceed 12 feet in length. Use the phone cord included with your modem if possible.

There should be no line splitters, fax machines, or other devices between the modem and the wall jack.

You may have devices between the modem and the phone jack.

You may have a poor line connection.

Place the call again. Calls are routed differently each time. To verify a valid phone connection, enter RapidComm’s Terminal mode, type ATX3DT18479825092 (the 3Com BBS), and press

ENTER. This string bypasses the dial tone, allowing a connection if the modem is functioning properly.

90


PROBLEM

The modem won’t go off hook to dial or doesn’t answer the phone (cont.)

Both modems exchange carrier signals but fail to establish a link.

Your 33.6 kbps modem cannot achieve a 33.6 kbps

Internet connection.

DIAGNOSIS

If you have voice mail, your dial tone may be altered when messages are waiting.

Your software may not have auto answer enabled.

POSSIBLE SOLUTION

Answer your voice mail to restore your normal dial tone.

You may have a poor line connection.

Enable the auto answer feature. In RapidComm’s Terminal mode, type ATS0=1 and press ENTER. NOTE: You need to enable auto answer before every session unless you alter your software’s initialization string to permanently enable auto answer.

Try placing the call again. The phone company routes calls differently each time. To verify a valid phone connection, enter

RapidComm’s Terminal mode and type ATX3DT18479825092 and press ENTER (the phone number is the 3Com BBS). This string bypasses the dial tone, allowing a connection if the modem is functioning properly.

There may be line splitters or other devices between your modem and the phone jack.

The phone line you are currently using may not be clean enough to achieve a

33.6 kbps connection.

Remove all devices between the modem and the phone jack it is using. Make sure the phone cord you are using is no longer than

12 feet in length. Use the phone cord included with your

Sportster if possible.

Try using a different phone line. Make sure the phone line you are using is an analog phone line. Using a digital phone line will damage your modem.

91


PROBLEM

Your modem won’t connect at 2400 bps with a 2400 bps modem.

Your screen keeps displaying random garbage characters.

DIAGNOSIS

The modem you’re trying to connect with could be an older model that doesn’t support error control.

POSSIBLE SOLUTION

You can disable error control on your modem by typing AT&M0 in terminal mode and pressing ENTER. Now try placing the call to the remote modem again. When finished, reset your modem to enable the error control features. In terminal mode, type ATZ and press ENTER. Note: ATZ4 or AT&F1 are often the best reset strings, as they restore hardware flow control defaults.

Set your modem’s word length, parity, and stop bits the same as the remote modem or BBS you are calling. The most common settings are: data bits=8. Stop bits=1, parity=none, flow control=hardware (RTS/CTS)

You could have a conflict with the remote modem’s settings for word length, parity, and stop bits.

Your software and modem might not be set to the same flow control settings.

The best flow control settings might not be enabled on your modem.

Make sure the software and modem have the same flow control settings (hardware [RTS/CTS] and software [xon/xoff]).

In terminal mode, type AT&F1 and press ENTER to load the optimal settings.

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PROBLEM

Your communications software is reporting many cyclic redundancy check

(CRC) errors and low characters per second

(CPS).

DIAGNOSIS

You may have a bad phone line.

Optimum flow control settings may not be enabled on your modem.

The serial port rate in your communications software may be set too high for your modem’s

UART or your area’s phone lines.

The remote site you are dialing into may have trouble with the file transfer protocol.

There may be a Terminate and Stay Resident (TSR) program (such as a screen saver or virus scanner) running in the background, disrupting data communications.

POSSIBLE SOLUTION

Try placing the call again. The phone company routes calls differently each time.

In terminal mode, type AT&F1 and press ENTER to load the optimum hardware flow control settings.

Lower the serial port rate in your communications software to

57,600 bps, 38,400 bps, or 19,200 bps. Some software programs, including AOL, allow port rates of 14,400, 28,800, 33,600.

These values are invalid and should not be used. NOTE: The port rate for an x2 modem cannot be set lower than 57,600 if you want to achieve and x2 connection.

Try using a different file transfer protocol. Zmodem is the preferred protocol.

Disable any Terminate and Stay Resident (TSR) programs running in the background. If you have software running as a TSR, check the software’s manual for information about disabling its ability to operate as a TSR.

93


PROBLEM

Your communications software is reporting many cyclic redundancy check

(CRC) errors and low characters per second (CPS)

(cont.).

Errors are constantly occurring in your V.17 fax transmissions.

RapidComm fails to initialize the modem.

DIAGNOSIS

You may be trying to download a file to a compressed area of your hard disk.

POSSIBLE SOLUTION

Download to an uncompressed area on your hard drive.

Your modem initialization string could be insufficient for fax transmissions.

There may be a Terminate and Stay Resident (TSR) program (such as a screen saver or virus scanner) running in the background, disrupting data communications.

Your baud rate may be set too high.

You may be trying to fax a compressed file

RapidComm’s port settings may be incorrect.

In your communications software, change the modem initialization string to AT&H3&I2&R2S7=90.

Disable any Terminate and Stay Resident (TSR) programs running in the background. If you have software running as a TSR, check the software’s manual for information about disabling its ability to operate as a TSR.

Lower baud rate to 9600, 7200, or 4800.

Open the file in the application in which it was created. Select

RapidComm as the printer and then print the file.

Make sure RapidComm’s port settings are correctly set for your modem.

94

When Plug and Play Fails

If you have been directed to this section, your

Plug and Play installation was not successful.

Try the following possible solutions:

1. Click Windows 95 Start and click Shut

Down. When asked if you wish to shut down your computer, click Yes. When

Windows 95 indicates that it is safe to turn off your computer, turn it off and wait 15 seconds. Then turn the computer back on.

Windows 95 may detect your modem upon this restart even if it did not detect the modem during the initial installation. If you see screens indicating that new hardware has been detected by Windows

95, turn to “Installing the Modem Drivers” on page xx. If not, continue with the next step.


2. Click Windows 95 Start, point to

Settings, and click Control Panel.

Double-click the System icon and then click the Device Manager tab on the

“System Properties” screen. Look for

“Other Devices” or “Unknown Devices” in the list that appears. If you do not see either of these options in the list, continue with the next section to learn about our support options. If you do see one of these options, double-click the option. If the description that appears matches the modem you are trying to install, click the

Remove button. Click OK when

Windows asks if you wish to remove the device. Next, restart the computer as described in step 1 on this page. If the computer does not detect the modem after this second restart, please continue

95

T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES reading to learn about our support options.

Online Help Resources

Connecting to the 3Com BBS

To connect to the 3Com Bulletin Board

System, follow these steps:

3. Type ATDS0 and press ENTER.

NOTE: ATDS0 automatically dials

1-847-982-5092, the 3Com BBS.

1. Start the RapidComm Voice program.

The software settings for the BBS are: If this is your first time connecting to our

BBS, you will be asked to enter your name, create a password of your choice, and to fill out a questionnaire.

ANSI terminal emulation

Data Bits: 8

Parity: None

Stop Bits: 1

2. Put RapidComm Voice in Terminal mode by clicking on the Terminal button.

96


Downloading the User’s Guide

To download theUser’s Guide, follow these steps:

1. In the main menu, type D.

The preceding screen shot is what the introduction screen of the 3Com BBS will look like. The BBS gives you access to customer and technical support documents and the BBS library which contains hundreds of helpful files and tips to help simplify using your modem.

2. A Filename to Download: text box appears on the screen.

97


3. Type the name of the file you wish to receive. You have three manual formats from which to choose:

•

VOICE336.EXE—The guide in a selfextracting Word for Windows v6.0

format.

98

•

VOICE336.PDF—The guide in .pdf

format (readable using Adobe

Acrobat, which is available on the

Connections CD-ROM).

4. Protocol Type for Transfer. Your selection depends on what your software supports. If possible, make Zmodem your first choice.

5. Depending on the software you are using, you will either be prompted where you want the file placed, or the file will be placed in the directory where your communications software is loaded.

6. When the file transfer is complete, and you are ready to leave the BBS, type G

(for Good-bye) from the main menu.

3Com offers a number of other online technical support options for our U.S.

Robotics Sportster modems. Choose any one of the following options if you need help with or want to learn more about your new modem.


Internet FTP

Provides free library containing the same files as the BBS site. FTP to ftp.usr.com.

Internet on Demand

Provides automatic technical support through a library containing product information, quick reference cards, and installation help.

To obtain an index of available documents, send a blank e-mail to [email protected]. To have a document e-mailed to you, send the document's number as the subject.

World Wide Web

A U.S. Robotics Home Page containing the same information as the Internet on Demand listing. Log on to: www.usr.com/home/online/main.htm

CompuServe

Access the same information as the Internet

FTP site. Connect through the US Robotics

Forum or e-mail us through CompuServe

Mail for a response within 24 hours. The

U.S. Robotics forum address is GO

USROBOTICS. Address private messages to 76711,707.

America Online

Go to the Keyword field and type

USROBOTICS to connect to various U.S.

Robotics resources, such as file libraries, message boards, online customer support, and product announcements.

Technical Support Hotline

Technical questions about U.S. Robotics modems can also be answered by technical support representatives. The hotline is a toll

99

T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES call. In order to save both time and expense, you should do the following before calling:

1. Click the Windows 95 Start button.

2. Point to Programs and then click

RapidComm Voice. (If you have not installed RapidComm Voice, see the section title “Software Installation and

Testing” on page 33.)

3. Enter RapidComm Voice’s terminal mode by clicking the Terminal button.

4. Type ATI7 and press ENTER.

5. The information that appears will be useful to the technical support representative who attempts to troubleshoot your problem when you call. Select Print from the File menu or leave the information on screen.

Hotline (847) 982-5151

(Hours: 8:00 am - 6:00 pm CST)

Priority No-Hold Service

3Com also staffs its own 900 fee-based number for immediate assistance. These lines are staffed from 8 a.m. - 6 p.m. CST

Monday through Friday.

No-Hold line 900-555-USR1

There is a $1.50 per minute charge which will appear on your local phone bill. You must be

18 or older or have parental permission.

(Service not available in Canada.)

Are You Still Having

Problems?

•

Review this manual.

•

Call or visit your modem dealer. They may be able to assist you. This is much

100

T ROUBLESHOOTING AND O NLINE H ELP R ESOURCES more efficient and time-saving than returning the modem to U.S. Robotics.

•

If your dealer can't help you, contact

3Com Customer Support. When you call, specify your modem serial number

(found on the modem and on the outside of the box), the software being used, and, if possible, have the contents of your

ATI7 screen available.

If You Need to Return the

Modem to Us

Contact 3Com Customer Support. If the support representative determines that you need to return the modem, you will receive an

SRO (Service Repair Order) number. You must have an SRO number before returning the modem to us. Ship the unit, postage paid, in a strong box made of corrugated cardboard with plenty of packing material.

DO NOT send the modem back in the original box. Send ONLY the modem (NOT the power supply, manuals, CD-ROM, etc.).

Include your SRO number, name, and address on the shipping label as well as inside the package. If possible, send the package via a courier capable of tracking the progress of the shipment. Ship to the following address:

3Com

Attn: RMA

SRO#

6201 W. Oakton, East Dock

Morton Grove, IL 60053

101

RapidComm Troubleshooting

Tips


PROBLEM: The lights in the RapidComm

Voice software’s modem light monitor do not correspond to the actual lights on an external modem.

DIAGNOSIS: Under certain circumstances, the modem light monitor does not correctly report the activity of the modem. We are aware of this problem and are working to rectify the situation in upcoming versions of the software.

PROBLEM: The station ID works intermittently.

DIAGNOSIS: Under certain circumstances

(including receiving a fax), the station ID may not work properly.

PROBLEM: RapidComm Voice does not work properly at 115.2 kbps.

DIAGNOSIS: The presence of disk compression software on your system hampers the RapidComm Voice software’s ability to work properly at 115.2 kbps.

Removal of the disk compression software from your system will allow RapidComm

Voice to operate properly at 115.2 kbps.

A Note to User’s with Older

Versions of RapidComm Voice on Their Systems

You must uninstall older versions of

RapidComm Voice from your system before installing the most recent version (contained on the CD-ROM that came with your new modem). Otherwise you may introduce conflicts in your system that will hamper the

RapidComm Voice software’s ability to work properly.

102

G

LOSSARY

with items in the Command Summary, found in the

Technical Quick Reference (Section D), are printed in italics.

application

A computer program designed to perform a specific task or set of tasks. Examples include word processing and spreadsheet applications.

ARQ modem to detect flawed data and request that it be analog loopback

A modem self-test in which data from the keyboard or an internal test pattern is sent to the modem's transmitter, turned into analog form, looped back to the receiver, and converted back into digital form.

analog signals

A variety of signals and wavelengths that can be transmitted over communications lines such as the sound of a voice over the phone line.

answer mode

The mode used by your modem when answering an incoming call from an originating modem. The transmit/receive frequencies are the reverse of the

ASCII

American Standard Code for Information Interchange. A code used to represent letters, numbers, and special

characters such as $, !, and /.

asynchronous transmission

Data transmission in which the length of time between transmitted characters may vary. Because characters may to mark the beginning and end of each character.

103

auto answer

Sets the modem to pick up the phone line when it detects a certain number of rings. See S-register S0 in the

“Technical Quick Reference.”

G LOSSARY bit rate

Also referred to as transmission rate. The number of

Communications channels using analog modems are established at set bit rates, commonly 2400, 4800, 9600,

14,400, 28,800 and higher.

auto dial

A process where your modem dials a call for you. The dialing process is initiated by sending an ATDT (dial tone) or ATDP (dial pulse) command followed by the telephone number. Auto dial is used to dial voice numbers. See command Dn.

bits per second (bps)

The bits (binary digits) per second rate. Thousands of bits per second are expressed as kilobits per second

(kbps).

baud rate

A term used to measure the speed of an analog transmission from one point to another. Although not technically accurate, baud rate is commonly used to mean

bit rate.

binary digit

A 0 or 1, reflecting the use of the binary numbering system. Used because the computer recognizes either of two states, OFF or ON. Shortened form of binary digit is bit.

buffer

A temporary memory area used as storage during input and output operations. An example is the modem's command buffer.

byte

A group of binary digits stored and operated upon as a unit. Most often the term refers to 8-bit units or

characters. One kilobyte (KB) is equal to 1,024 bytes or characters; 640 KB is equal to 655,360 bytes or characters.

104

carrier

The basic signal altered or modulated by the modem in order to carry information.

G LOSSARY cyclic redundancy checking (CRC)

An error-detection technique consisting of a test character number, or other symbol.

and receiving modems. The sending modem inserts the results of its tests in each data block in the form of a CRC code. The receiving modem compares its results with the received CRC code and responds with either a positive or negative acknowledgment.

characters per second (CPS) data communications

The transmission or sharing of data between computers via an electronic medium.

character) will be transmitted at a rate of approximately data compression table error-control protocols, employ advanced techniques such increase cps.

class 1 and 2.0

values in the table are continually altered and built during each call: The longer the table, the more efficient

throughput gained.

and faxmodems for sending and receiving faxes.

105

data mode

Mode used by a modem when sending and receiving data files.

G LOSSARY digital loopback

A test that checks the modem's RS-232 interface and the

DCE

Data Communications (or Circuit-Terminating)

Equipment, such as dial-up modems that establish and control the data link via the telephone network.

default

Any setting assumed, at startup or reset, by the computer's software and attached devices. The computer or software will use these settings until changed by the user or other software.

detect phase

signals) from the computer or terminal, and immediately returns the data to the screen for verification.

digital signals

Discrete, uniform signals. In this manual, the term refers to the binary digits 0 and 1.

DTE

Data Terminal (or Terminating) Equipment. A computer that generates or is the final destination of data.

duplex

Indicates a communications channel capable of carrying establishing if both modems attempting to connect have

V.42 capability.

dictionary data compression algorithm.

106

Electronic Industries Association (EIA)

Group which defines electronic standards in the U.S.

G LOSSARY error control frame

A data communications term for a block of data with header and trailer information attached. The added information usually includes a frame number, block size data, error-check codes, and Start/End indicators.

full duplex

Signals can flow in both directions at the same time over one line. In microcomputer communications, may refer to flawed frames (ARQ).

facsimile

A method for transmitting the image on a page from one point to another. Commonly referred to as fax.

fax mode

The mode used by a modem to send and receive data in half duplex

Signals can flow in both directions, but only one way at a time. In microcomputer communications, may refer to modem to send a copy of the transmitted data to the screen of the sending computer.

flow control

A mechanism that compensates for differences in the flow of data into and out of a modem or other device. See

107

Hz to indicate cycles per second.

G LOSSARY

MNP

Hertz, a frequency measurement unit used internationally domain. There are several different MNP protocols, but the most commonly used one ensures error-free ITU-T

An international organization that defines standards for telegraphic and telephone equipment. For example, the

Bell 212A standard for 1200-bps communication in North

2400-bps communication, most U.S. manufacturers

LAPM

Link Access Procedure for Modems. An error-control modem

A device that transmits/receives computer data through a communications channel such as radio or telephone lines.

It also changes signals received from the phone line back to

digital signals before passing them to the receiving computer.

nonvolatile memory (NVRAM)

User-programmable random access memory whose data is checking (CRC) and retransmission of corrupted data

(ARQ) to ensure data reliability.

local echo

A modem feature that enables the modem to display keyboard commands and transmitted data on the screen.

See command En.

modem, it includes four stored phone numbers and the modem settings.

off/on hook

Modem operations that are the equivalent of manually lifting a phone receiver (taking it off-hook) and replacing it

(going on-hook).

108

G LOSSARY online fall back/fall forward

A feature that allows high-speed, error-control modems to monitor line quality and fall back to the next lower speed in a defined range if line quality diminishes. As line conditions improve, the modems switch up to the next higher speed.

protocol

A system of rules and procedures governing communications between two or more devices. Protocols vary, but communicating devices must follow the same protocol in order to exchange data. The format of the data, readiness to receive or send, error detection and error correction are some of the operations that may be defined in protocols.

originate mode

The mode used by your modem when initiating an outgoing call to a destination modem. The transmit/receive frequencies are the reverse of the called modem, which is in

answer mode.

RAM

Random Access Memory. Memory that is available for use when the modem is turned on, but that clears of all information when the power is turned off. The modem's parity

A simple error-detection method that checks the validity surpassed by more reliable and efficient forms of error communicating computers, or both may omit parity.

remote digital loopback

A test that checks the phone link and a remote modem's transmitter and receiver.

remote echo

A copy of the data received by the remote system, returned to the sending system, and displayed on the screen. Remote echoing is a function of the remote system.

109

ROM

Read Only Memory. Permanent memory, not userprogrammable.

G LOSSARY throughput

The amount of actual user data transmitted per second

start/stop bits or frame headers and trailers. Compare serial transmission

The consecutive flow of data in a single channel. Compare to parallel transmissions where data flows simultaneously in multiple channels.

V.8

The ITU-T standard specification that covers the initial handshaking process.

start/stop bits

V.17 fax

transmission.

14,400 bps, 12,000 bps, 9,600 bps, and 7,200 bps.

terminal

A device whose keyboard and display are used for sending and receiving data over a communications link. Differs from a microcomputer or a mainframe in that it has little or no internal processing capabilities.

V.21

An ITU-T standard for modems operating in on public switched telephone networks.

terminal mode

Software mode that allows direct communication with the modem. Also known as command mode.

V.22

An ITU-T standard for modem communications at 1200 bps, compatible with the Bell 212A standard observed in the U.S. and Canada.

110

G LOSSARY

V.22 bis

An ITU-T standard for modem communications at 2400 bps. The standard includes an automatic link negotiation fallback to 1200 bps and compatibility with Bell

212A/V.22 modems.

fall forward (switch back up) when line conditions

V.34

An ITU-T standard that currently allows data rates as high as 28,800 bps.

V.27 ter

V.34+

V.29

V.32

An ITU-T standard for modem communications at 9600 when line quality is impaired.

V.32 bis

An ITU-T standard that extends the V.32 connection modems fall back to the next lower speed when line quality is impaired, fall back further as necessary, and also

V.42

An ITU-T standard for modem communications that defines a two-stage process of detection and negotiation for LAPM error control.

V.42 bis compression scheme for use during V.42 connections.

111

Xmodem

G LOSSARY

Ymodem G

Similar to Ymodem, except it includes no error checking, which makes it faster.

used to transfer files between modems. These protocols are in the public domain and are available from many bulletin board services.

XON/XOFF

Standard ASCII control characters used to tell an intelligent device to stop/resume transmitting data.

Zmodem

Similar to Xmodem and Ymodem, except it includes batch transfer, the ability to recover from a partially complete transfer, an autostart feature, and improved efficiency.

Ymodem use either checksums or CRC for error checking.

112

T

ECHNICAL

Q

UICK

R

EFERENCE

This section includes information about:

•

AT Command Summary

•

S-Registers

113

T ECHNICAL Q UICK R EFERENCE

AT Command Summary

•

Type commands in either upper or lower case, not a combination. Use the

Backspace key to delete errors. (You cannot delete the original AT command since it is stored in the modem buffer.)

•

If a command has numeric options and you don’t include a number, zero is assumed. For example, if you type ATB, the command ATB0 is assumed.

•

Every command except A/, A>, and +++ must begin with the AT prefix and be entered by pressing ENTER.

•

The maximum command length is 58 characters. The modem doesn’t count the AT prefix, carriage returns, or spaces.

NOTE: All defaults are based on the &F1



Hardware Flow Control template loaded in NVRAM when the modem is shipped. Defaults are listed in italics.

114

Command Set

$

A

Use in conjunction with D, S, or & commands (or just AT) to display a basic command list; online help.

Manual Answer: goes off hook in answer mode. Pressing any key aborts the operations.

A/ Re-executes the last issued command. Used mainly to redial. This does not require the AT prefix or a Carriage

Return.

A> Re-executes the last-issued command continually.

Any key

Aborts off-hook dial/answer operation and hangs up.


AT Required command prefix, except with A/ and +++. Use alone to test for OK result code.

Bn U.S./ITU-T answer sequence.

B0 ITU-T answer sequence

B1 U.S. answer tone

Dn Dials the specified phone number. Includes the following:

L

P

R

Dials the last dialed number.

Pulse (rotary) dial

Originates call using answer (reverse) frequencies.

115

116

,

T

;

Sn Dials the phone number string stored in

NVRAM at position n

(n = 0

−

3). Phone numbers are stored with the &Zn=s

“ command.

Tone dial

(Comma) Pause, See

S8 definition; which it’s linked to.

(Semicolon) Return to

Command mode after dialing.

Dials the letters that follow (in an alphabetical phone number).


/

!

W

@

$

(Exclamation point)

Flashes the switch hook.

Delays for 125 ms.

before proceeding with dial string.

Wait for second dial tone (X2 or X4); linked to S6 register.

Dials, waits for quiet answer, and continues

(X3 or higher).

Displays a list of Dial commands.

En Sets local echo.

E0 Echo OFF

E1 Modem displays keyboard commands

Fn Sets online local echo of transmitted data ON/OFF.

F0 Local echo ON.

Modem sends a copy of data it sends to the remote system to your screen.

F1 Local echo OFF.

Receiving system may send a remote echo of data it receives.

Hn Controls ON/OFF hook.

H0 Hangs up (goes on hook).

H1 Goes off hook.

In Displays the following information.


I0

I1

I2

I3

I4

I5

I6

I7

Four-digit product code

Results of ROM checksum

Results of RAM checksum

Product type

Current modem settings

Nonvolatile memory

(NVRAM) settings

Link diagnostics

Product configuration

Ln Controls speaker volume

(internals only).

L0 Low volume

L1 Low volume

L2 Medium volume

L3 High volume

117

Mn Operates speaker.

M0 Speaker always OFF.

M1 Speaker ON until

CONNECT.

M2 Speaker always ON.

M3 Speaker ON after dial, until CONNECT.

On Returns online.

O0 Returns online.

O1 Returns online and retrains.

P Sets pulse dial (for phone lines that don’t support touch-tone dialing).


Q1

Q2

Quiet mode; no result codes.

Displays result codes only in Originate mode.

Sr.b=n Sets bit .b of register r to n

(0/OFF or 1/ON).

Sr=n

Sr?

S$

T

Sets register r to n.

Displays contents of S-

Register r.

Displays a list of the S-

Registers.

Sets tone dial.

Qn Displays/suppresses result codes.

Q0 Displays result codes.

Vn Displays verbal/numeric result codes.

V0

V1

Numeric codes

Verbal codes

118


Xn Sets result code displayed. Default is X4.

Result Codes

0/OK

1/CONNECT

2/RING

3/NO CARRIER

4/ERROR

5/CONNECT 1200

6/NO DIAL TONE

7/BUSY

8/NO ANSWER*

9/RESERVED

10/CONNECT 2400

11/RINGING

13/CONNECT 9600

18/CONNECT 4800

20/CONNECT 7200

21/CONNECT 12000

25/CONNECT 14400

43/CONNECT 16800

85/CONNECT 19200

91/CONNECT 21600

99/CONNECT 24000

103/CONNECT 26400

107/CONNECT 28800

151/CONNECT 31200

155/CONNECT 33600

X0

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

X1

•

•

•

•

•

•

Xn Setting

X2

•

•

•

•

•

•

•

• •

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

X3

•

•

•

•

•

•

X4

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

119


Xn (continued)

Xn Result Codes (cont.) X0 X1 X2 X3 X4

Adaptive Dialing

Wait for 2nd Dial Tone (W)

•

•

•

Wait for Answer (@)

Fast Dial

•

• •

•

•

•

*Requires @ in dial string; replaces NO CARRIER

120

Yn Selects power-on/reset default configuration.

Y0 Default is profile 0 setting in NVRAM

Y1 Default is profile 1 setting in NVRAM

Z Resets modem.

Z0 Resets modem to

NVRAM profile selected by Y command or dip 7.

Z1 Resets modem to

NVRAM profile 0

Z2 Resets modem to

NVRAM profile 1

Z3 Resets modem to factory default profile

0 (&F0)



1 (&F1)


2 (&F2)

&$ Displays a list of ampersand (&) commands.

&A Enables/disables additional result code subsets (see

Xn).

&A0 ARQ result codes disabled

&A1 ARQ result codes enabled

&A2 V.32 modulation indicator added

121

&A3 Protocol indicators added



LAPM/MNP/NONE

(error control) and

V42bis/MNP5 (data compression)

&Bn Manages modem’s serial port rate.

&B0 Variable, follows connection rate

&B1 Fixed serial port rate

&B2 Fixed in ARQ mode, variable in non-ARQ mode

&Cn Controls Carrier Detect

(CD) signal.

&C0 CD override

&C1 Normal CD operations


&Dn Controls Data Terminal

Ready (DTR) operations.

&D0 DTR override

&D1 DTR toggle causes online Command mode

&D2 Normal DTR operations

&D3 Resets on receipt of

DTR

&Fn Loads a read-only (nonprogrammable) factory configuration.

&F0 Generic template

&F1 Hardware flow control template

&F2 Software flow control template

122

&Gn Sets Guard Tone.

&G0 No guard tone, U.S.

and Canada

&G1 550 Hz guard tone, some European countries, requires B0 setting.

&G2 1800 Hz guard tone,

U.K., requires B0 setting.

&Hn Sets Transmit Data (TD)

flow control (see also &Rn).

&H0 Flow control disabled

&H1 Hardware flow control, Clear to Send

(CTS)

&H2 Software flow control,

XON/XOFF


&H3 Hardware and software flow control

&In Sets Receive Data (RD) software flow control (see

also &Rn).

&I0 Software flow control disabled

&I1 XON/XOFF signals to your modem and remote system

&I2 XON/XOFF signals to your modem only

&Kn Enables/disables data compression.

&K0 Data compression disabled

&K1 Auto enable/disable

&K2 Data compression enabled

123

&K3 MNP5 compression disabled

&Mn Sets Error Control (ARQ) for connections at 1200 bps and higher.

&M0 Normal mode, error control disabled

&M1 Reserved

&M2 Reserved

&M3 Reserved

&M4 Normal/ARQ

&M5 ARQ mode

&Nn Sets connect speed. If connection cannot be established at this speed, the modem will hang up.

Sets ceiling connect speed if

&Un is greater than 0. See

&Un.


&N0 Variable rate

&N1 300 bps

&N2 1200 bps

&N3 2400 bps

&N4 4800 bps

&N5 7200 bps

&N6 9600 bps

&N7 12,000 bps

&N8 14,400 bps

&N9 16,800 bps

&N10 19,200 bps

&N11 21,600 bps

&N12 24,000 bps

&N13 26,400 bps

&N14 28,800 bps

&N15 31,200 bps

&N16 33,600 bps

124

&Pn Sets pulse (rotary) dial make/break ratio.

&P0 U.S./Canada ratio,

39%/61%

&P1 U.K. ratio, 33%/67%

&Rn Sets Receive Data (RD) hardware flow control,

Request to Send (RTS) (see

also &Hn).

&R0 Reserved

&R1 Modem ignores RTS

&R2 Received Data to computer only on RTS

&Sn Controls Data Set Ready

(DSR) operations.

&S0 DSR override; always

ON

&S1 Modem controls DSR


&Tn Begins test modes (used in conjunction with s register

18).

&T0 Ends testing

&T1 Analog Loopback

&T2 Reserved

&T3 Local Digital

Loopback

&T4 Enables Remote

Digital Loopback

&T5 Prohibits Remote

Digital Loopback

&T6 Initiates Remote Digital

Loopback

&T7 Remote Digital with self-test and error detector

125

&T8 Analog Loopback with self-test and error detector

&Un Sets floor connect speed

when &Un is set greater

than 0. &Nn is the ceiling

connect speed. See &Nn.

&U0 Disabled

&U1 300 bps

&U2 1200 bps

&U3 2400 bps

&U4 4800 bps

&U5 7200 bps

&U6 9600 bps

&U7 12,000 bps

&U8 14,400 bps

&U9 16,800 bps

&U10 19,200 bps

&U11 21,600 bps

126


&U12 24,000 bps

&U13 26,400 bps

&U14 28,800 bps

&U15 31,200 bps

&U16 33,600 bps

&Wn Writes current configuration to NVRAM templates.

&W0 Modifies the NVRAM

0 template (Y0)

&W1 Modifies the NVRAM

1 template (Y1)

&Yn Sets break handling.

&Y0 Destructive, but doesn’t send break

&Y1 Destructive, expedited

&Y2 Nondestructive, expedited

&Y3 Nondestructive, unexpedited

&Zn=s Writes phone number string s to NVRAM at position n

(n = 0

−

3).

&Zn=L Writes last executed dial string to NVRAM at position n (n = 0

−

3).

&Zn? Displays the phone number stored at position n (n = 0

−

3).


#CID=2 Caller ID enabled with extended information, including caller’s name.

+++ Escapes to online-command mode.

&ZL?

Displays the last executed dial string.

#CID=n Controls Caller ID feature.

#CID=0 Caller ID disabled.

#CID=1 Caller ID enabled.

127


S Registers

To change a setting, use the ATSr=n command, where r is the register and n is a decimal value from 0

−

255 (unless otherwise indicated).

Register Default Function

S0 0 Sets the number of rings on which to answer in Auto Answer Mode. When set to

0, Auto Answer is disabled.

S1 0

S2

S3

S4

S5

43

13

10

8

Counts and stores the number of rings from an incoming call. (S0 must be greater than 0.)

Stores the ASCII decimal code for the escape code character. Default character is

+. A value of 128 – 255 disables the escape code.

Stores the ASCII code for the Carriage Return character. Valid range is 0 –

127.

Stores the ASCII decimal code for the Line Feed character. Valid range is 0 –

127.

Stores the ASCII decimal code for the Backspace character. A value of 128

−

255 disables the Backspace key’s delete function.

128



S6 2 Sets the number of seconds the modem waits before dialing. If Xn is set to X2 or

X4, this is the time-out length if there isn't a dial tone.

S7 60

S8

S9

S10

2

6

7

Sets the number of seconds the modem waits for a carrier. May be set for much longer duration if, for example, the modem is originating an international connection.

Sets the duration, in seconds, for the pause (,) option in the Dial command.

Sets the required duration, in tenths of a second, of the remote modem’s carrier signal before recognition by the Sportster modem.

Sets the duration, in tenths of a second, that the modem waits to hang up after loss of carrier. This guard time allows the modem to distinguish between a line disturbance from a true disconnect (hang up) by the remote modem.

While we don’t recommend connecting the modem to a line with call waiting, if you have it, you may wish to adjust this setting upward to prevent the modem from misinterpreting the second call signal as a disconnect by the remote modem.

129



S10 (cont.) A better alternative is to ask your phone company how to temporarily disable call waiting (usually *70W). For example: ATDT *70W phone number.

S11

S12

S13

70

50

0

Note: If you set S10 = 255, the modem will not hang up when carrier is lost.

Dropping DTR hangs up the modem.

Sets the duration and spacing, in milliseconds, for tone dialing.

Sets the duration, in fiftieths of a second, of the guard time for the escape code sequence (+++).

Bit-mapped register. Select the bit(s) you want on and set S13 to the total of the values in the Value column. For example, ATS13 = 17 enables bit 0 (value is 1) and bit 4 (value is 16).

2

3

Bit Value Result

0 1 Reset when DTR drops.

1 2 Reset non-MNP transmit buffer from 1.5K to 128

4

8 bytes.*

Set backspace key to delete.

On DTR signal, auto dial the number stored in

NVRAM at position 0.

130



S13 (cont.) Bit Value Result

4

5

6

16

32

64

At power on/reset, Auto Dial the number stored in

NVRAM at position 0.

Reserved

Disable quick retrains.

7 128 Disconnect on escape code.

* without using flow control.

The 128-byte option lets remote users with slower modems keep data you’re sending from scrolling off their screens. When remote users send your computer an XOFF (Ctrl-S) and you stop transmitting, the data in transit from your modem’s buffer doesn’t exceed the size of their screen.

This is also very helpful in situations when a remote modem/printer application is losing characters.

S15 0 Bit-mapped register setup. To set the register, see instructions for S13.

3

4

1

2


0 1 Disable ARQ/MNP for V.22.

5

2

8

16

32

Disable ARQ/MNP for V.22bis.

4 Disable ARQ/MNP V.32/V.32bis/V.32terbo.

Disable MNP handshake.

Disable MNP level 4.

Disable MNP level 3.

131




6

7

64

128

MNP incompatibility.

Disable V.42 operation.

To disable V.42 detect phase, select the total of the values for bits 3 and 7.

S16 0

S18

S19

S21

0

0

10

Bit-mapped register setup. To set the register, see instructions for S13.

2

4


0 1 Reserved

1 2 Reserved

4

8

Touch tone test.

Use internal test pattern.

Test timer for &T loopback testing. Sets the time in seconds of testing before the modem automatically times out and terminates the test. When set to 0, the timer is disabled. Valid range is 1-255.

Sets the duration, in minutes, for the inactivity timer. The timer activates when there is no data activity on the phone line; at time-out the modem hangs up. S19 = 0 disables the timer.

Sets the length, in 10-millisecond units, of breaks sent from the modem to the computer; applies to MNP or V.42 mode only.

132



S22 17 Stores the ASCII decimal code for the XON character.

S23 19 Stores the ASCII decimal code for the XOFF character.

S25 20

S27 0

Sets the duration, in hundredths of a second, that DTR must be dropped so that the modem doesn’t interpret a random glitch as a DTR loss. (Most users will want to use the default; this register is useful for setting compatibility with older systems running under older operating software.)

Bit-mapped register setup. To set the register, see instructions for S13.

4

5

6

1

2

3


0 1

16

32

64

2

4

8

V.21 mode, the modem answers both overseas and domestic

(U.S. and Canada) calls, but only originates V.21 calls. (Default

Bell 103)

Enables unencoded (non-trellis coded) modulation in V.32 mode.

Disables V.32 modulation.

Disables 2100 Hz answer tone to allow two V.42 modems to connect faster.

Enables V.23 fallback mode.

Disables V.32bis mode.

Disable V.42 selective reject.

133




7 128 Software compatibility mode. This setting disables the codes and displays the 9600 code instead. The actual rate of the call can be viewed on the ATI6 screen.

Used for unusual software incompatibilities. Some software may not accept 7200, 12,000, and 14,400 bps or greater result codes.

S28 0

8

Eliminates the V.32 answer tones for a faster connection.

Default item, all times are in tenths of seconds.

S29

S30

S31

S32

-

-

255

20

2

Disables all connections except V.32 at 9600 bps.

Sets the duration, in tenths of a second, of the V.21 answer mode fallback timer.

Reserved

Reserved

Bit-mapped register setup. To set the register, see the instructions for S13.


0 1 V.8 Call Indicate enabled.

1 2 Enables V.8 mode.

134




2

3

4

8

Reserved.

Disable V.34 modulation.

4 16 Disable V.34+ modulation.

5-7 32-128 Reserved.

S33 0

S34 0

Bit-mapped register setup. To set the register, see the instructions for S13.

4

5

2

3

6

7


0 1 Disable 2400 symbol rate.

1 2 Disable 2743 symbol rate.

4

8

16

32

64

128

Disable 2800 symbol rate.




Reserved

Disable shaping.

Bit-mapped register setup. To set registers, see instructions for S13.


0 1 Disable 8S-2D trellis encoding.

1 2 Disable 16S-4D trellis encoding.

135




4

5

2

3

6

7

4

8

16

32

64

128

Disable 32S-2D trellis encoding.

Disable 64S-4D trellis encoding.

Disable non-linear coding.

Disable TX level deviation.

Disable Pre-emphasis.

Disable Pre-coding.

S35 0 Bit-mapped register setup. To set registers, see instructions for S13.


0-2 1-7 Limit back channel rate.

1 = 28800 max.

2 = 26400 max.

3 = 24000 max.

4 = 21600 max.

5 = 19200 max.

6 = 16800 max.

7 = 14400 max.

3 8 Force RBS operation

4-7 12-128 Reserved.

136



S38 0 Sets an optional delay, in seconds, before a forced hang-up and clearing of the

Transmit buffer when DTR drops during an ARQ call. This allows time for a remote modem to acknowledge receipt of all transmitted data before it is disconnected. The modem immediately hangs up when DTR drops. This option only applies to connections terminated by dropping DTR. If the modem receives the

ATH command, it ignores S38 and immediately hangs up.

S39-S40

S41

Reserved

0 Bit-mapped register setup. To set registers, see instructions for S13.


0 1 Distinctive ring enabled.

1-7 2-128 Reserved

137

R

EGULATORY

I

NFORMATION

Manufacturer’s Declaration of Conformity

3Com

7770 North Frontage Road

Skokie, Illinois 60077-2690

U.S.A.

declares that the product U.S. Robotics

Sportster Voice 33600 Internal Faxmodem conforms to the FCC’s specifications: received including interference that may cause undesired operations.

Part 68:

This equipment complies with FCC Rules Part

68. Located on the bottom of the modem is the FCC Registration Number and Ringer

Equivalence Number (REN). You must provide this information to the telephone company when requested.

Part 15, Class B:

Operation is subject to the following two conditions:

(1) this device may not cause harmful electromagnetic interference, and

(2) this device must accept any interference

138

The REN is used to determine the number of devices you may legally connect to your telephone line. In most areas, the sum of the

REN of all devices connected to one line must not exceed five (5.0). You should contact your telephone company to determine the maximum

REN for your calling area.

R EGULATORY I NFORMATION

This equipment uses the following USOC jacks: RJ-11C.

This equipment may not be used on coin service provided by the telephone company.

Connection to party lines is subject to state tariffs.

An FCC compliant telephone cord and modular plug are provided with this equipment, which is designed to connect to the telephone network or premises wiring using a Part 68 compliant compatible jack. See installation instructions for details.

IC (Canada)

This digital apparatus does not exceed the

Class B limits for radio noise emissions from digital apparatus set out in the interferencecausing equipment standard entitled Digital

Apparatus, ICES-003 of Industry Canada.

Cet appareil numérique respecte les limites de bruits radioélectriques applicables aux appareils numériques de Classe B préscrites dans la norme sur le matériel brouilleur:

Appareils Numériques, NMB-003 édictée par l'Industrie Canada.

Caution to the User

The user is cautioned that any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

UL Listing/CUL Listing

This information technology equipment is UL-

Listed and CUL-Listed for use with UL-Listed personal computers that have installation instructions detailing user installation of card cage accessories.

139


Connecting to the Telephone Company

It is not necessary to notify the telephone company before installing the modem.

However, the telephone company may request the telephone number(s) to which the

Sportster modem is connected and the declaration of conformity to FCC Parts 15 and Part 68 on the first page of this section.

Be sure that the telephone line you are connecting the modem to is a standard analog line and not a digital (PBX), party, or coin telephone line.

If the modem is malfunctioning, it may affect the telephone lines. In this case, disconnect the modem until the source of the difficulty is traced.

Fax Branding

The Telephone Consumer Protection Act of

1991 makes it unlawful for any person to use a computer or other electronic device, including fax machines, to send any message unless such message clearly contains in a margin at the top or bottom of each transmitted page or on the first page of the transmission, the date and time it is sent, an identification of the business or other entity, or other individual sending the message, and the telephone number of the sending machine or of such business, other entity, or individual. (The telephone number provided may not be a 900 number or any other number for which charges exceed local or long-distance transmission charges.)

In order to program this information into your

Sportster modem, refer to the RapidComm manual on the CD-ROM that shipped with

140

R EGULATORY I NFORMATION your modem. If you’re using a different communications software program, refer to its manual.

which you can determine by monitoring reception when the modem is installed and when it is removed from the computer, try to correct the problem with one or more of the following measures: Radio and Television Interference

This equipment generates and uses radio frequency energy and if not installed and used properly, in strict accordance with the manufacturer’s instructions, may cause interference to radio and television reception.

This modem complies with FCC Part 15,

Class B of the FCC rules for digital devices.

These rules are designed to provide reasonable protection against radio frequency interference from a digital device in a residential installation.

•

Reorient the receiving antenna (for televisions with antenna reception only) or cable input device.

•

Relocate the computer with respect to the receiver.

•

Relocate the computer and/or the receiver so that they are on separate branch circuits.

However, there is no guarantee that interference will not occur in a particular installation. If this device does cause interference to radio or television reception,

If necessary, consult your dealer or an experienced radio/television technician for additional suggestions. You may find the following booklet, prepared by the Federal

Communications Commission, helpful:

141

In accordance with Part 15 of the FCC rules, the user is cautioned that any changes or modifications to the equipment described in this manual that are not expressly approved by

3Com could void the user’s authority to operate the equipment.

For Canadian Modem Users

NOTICE: The Industry Canada (IC) label identifies certified equipment. This certification means the equipment meets certain telecommunications network protective, operational, and safety


How to Identify and Resolve Radio-

TV Interference Problems

Stock No. 004-000-0345-4

U.S. Government Printing Office

Washington, DC 20402 requirements as prescribed in the appropriate

Terminal Equipment Technical Requirements document(s). The Department does not guarantee the equipment will operate to the user’s satisfaction.

Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of the local telecommunications company. The equipment must also be installed using an acceptable method of connection. In some cases, the company’s inside wiring associated with a single-line, individual service may be extended by means of a certified connector assembly (telephone extension cord.) The customer should be aware that compliance with the above conditions may not prevent degradation of service in some situations. Currently, telecommunication companies do not allow users to connect their

142

R EGULATORY I NFORMATION equipment to jacks except in precise situations that are spelled out in tariffing arrangements with those companies.

Repairs to certified equipment should be coordinated by a representative designated by the supplier. Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment.

For your own protection, make sure that the electrical ground connections of the power utility, telephone lines, and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas.

CAUTION: Do NOT attempt to make such connections yourself. Instead contact an electric inspection authority or electrician, as appropriate.

NOTICE: The Ringer Equivalence Number

(REN) assigned to each terminal device provides an indication of the maximum number of terminals allowed to be connected to a telephone interface. The termination on an interface may consist of any combination of devices subject only to the requirement that the sum of the Ringer Equivalence Numbers of all the devices does not exceed 5.

The Ringer Equivalence Number is located on the bottom of the modem’s case (external modems) or on the modem’s circuit board

(internal modems).

WARRANTY AND REPAIR SERVICE

CENTER:

143

Keating Technologies

25 Royal Crest Court, Suite 200

Markham, ONT L3R 9X4

R EGULATORY I NFORMATION de raccordement. L'abonné ne doit pas oublier qu'il est possible que la conformité aux conditions énoncées cidessus n'empêche pas la dégradation du service dans certaines situations.

«AVIS : L'étiquette d'Industrie Canada identifie le matériel homologué. Cette étiquette certifie que le matériel est conforme aux normes de protection, d'exploitation et de sécurité des réseaux de télécommunications, comme le prescrivent les documents concernant les exigences techniques relatives au matériel terminal. Le Ministère n'assure toutefois pas que le matériel fonctionnera à la satisfaction de l'utilisateur.

Les réparations de matériel homologué doivent

être coordonnées par un représentant désigné par le fournisseur. L'entreprise de télécommunications peut demander à l'utilisateur de débrancher un appareil à la suite de réparations ou de modifications effectuées par l'utilisateur ou à cause de mauvais fonctionnement.

Avant d'installer ce matériel, l'utilisateur doit s'assurer qu'il est permis de le raccorder aux installations de l'entreprise locale de télécommunication. Le matériel doit également

être installé en suivant une méthode acceptée

144

Pour sa propre protection, l'utilisateur doit s'assurer que tous les fils de mise à la terre de la source d'énergie électrique, des lignes téléphoniques et des canalisations d'eau métalliques, s'il y en a, sont raccordés

ensemble. Cette précaution est


Centre de guarantie et de service après-vente: particulièrement importante dans les régions rurales.

Avertissement: L'utilisateur ne doit pas tenter de faire ces raccordements lui même; il doit avoir recours à un service d'inspection des installations électriques, ou à un électricien, selon le cas.

Keating Technologies

25 Royal Crest Court, Suite 200

Markham, ONT L3R 9X4

«AVIS : L'indice d'équivalence de la

sonnerie (IES) assigné à chaque dispositif terminal indique le nombre maximal de terminaux qui peuvent être raccordés à une interface. La terminaison d'une interface téléphonique peut consister en une combinaison de quelques dispositifs, à la seule condition que la somme d'indices d'équivalence de la sonnerie de tous les dispositifs n'excède pas 5.»

Limited Warranty

U.S. Robotics Access Corp., a subsidiary of 3Com Corporation, warrants to the original end-user purchaser that this product will be free from defects in materials and workmanship for a period of five years from the date of purchase. During the limited warranty period, and upon proof of purchase, the product will be repaired or replaced (with the same or a similar model, which may be a refurbished model) at U.S.

Robotics’ option, without charge for either parts or labor. This limited warranty shall not apply if the product is modified,

145

R EGULATORY I NFORMATION tampered with, misused, or subjected to abnormal working conditions (including, but not limited to, lightning and water damage).

THIS LIMITED WARRANTY DOES

NOT GUARANTEE YOU

UNINTERRUPTED SERVICE. REPAIR

OR REPLACEMENT AS PROVIDED

UNDER THIS LIMITED WARRANTY

IS THE EXCLUSIVE REMEDY OF THE

PURCHASER. THIS LIMITED

WARRANTY IS IN LIEU OF ALL

OTHER WARRANTIES, EXPRESS OR

IMPLIED, INCLUDING, BUT NOT

LIMITED TO, ANY IMPLIED

WARRANTY OF

MERCHANTABILITY OR FITNESS

FOR A PARTICULAR USE OR

PURPOSE. U.S. ROBOTICS SHALL IN

NO EVENT BE LIABLE FOR ANY

146

SPECIAL, INDIRECT, INCIDENTAL,

PUNITIVE, OR CONSEQUENTIAL

DAMAGES OF ANY KIND OR

CHARACTER, INCLUDING,

WITHOUT LIMITATION, LOSS OF

REVENUE OR PROFITS, FAILURE TO

REALIZE SAVINGS OR OTHER

BENEFITS, LOSS OF DATA OR USE,

DAMAGE TO EQUIPMENT, AND

CLAIMS AGAINST THE PURCHASER

BY ANY THIRD PERSON, EVEN IF

U.S. ROBOTICS HAS BEEN ADVISED

OF THE POSSIBILITY OF SUCH

DAMAGES.

This limited warranty gives you specific legal rights. You may have others, which vary from state to state.

Some states do not allow limitations on duration of an implied warranty, or the

exclusion or limitation of incidental or consequential damages, so the above exclusion or limitation may not apply to you.

To obtain service under this limited warranty, contact the 3Com Technical Support

Department at 847-982-5151 or by mail at

3Com, 7770 N. Frontage Road, Attn.:

Technical Support Dept., Skokie, Illinois

60077-2690. You will be given a Service

Repair Order (“SRO”) number to help 3Com keep track of your limited warranty request.

Once you have received your SRO number, take or send the product, postage prepaid and insured, to 3Com, Attn: RMA, [your SRO#],

6201 W. Oakton, East Dock, Morton Grove,

IL 60053. Pack the modem in a strong corrugated cardboard box with plenty of packing material. DO NOT send the modem

R EGULATORY I NFORMATION back in its original box. DO NOT send anything but the modem (do not send back the power supply, CD-ROM, documentation, etc.). If possible, send the modem via a courier capable of tracking the progress of the shipment. Include proof of the date of purchase. IMPORTANT: If you send your unit, pack it securely, and be sure that your

SRO number is visible on the outside of the package.

147

A

America Online, U.S. Robotics online support and, 99 analog phone lines, vs. digital, 15, 24

AOL. See America Online, U.S. Robotics online support and

INDEX

Connections CD-ROM

Modem Update Wizard, 53-64 software installation, 33-50 drivers, modem installing, 25-32

D

B

BBS, 3Com, 96-98 E error control disabling, 92 C characters per second (cps) low, errors and, 93-94

COM ports conflicts, 89-90 and Plug and Play installations, 19-20

CompuServe, U.S. Robotics online support and, 99

F faxing with RapidComm Voice software, 48-50 flow control, 51

FTP, U.S. Robotics online support and, 98

148

I

IRQs, 1, 3-12, 20 conflicts, 89-90

ISA expansion slots, 14, 22 jumper pins, 10-12, 20 jumper shunts, 10-12, 20

J

M microphone installation, 16, 24 modem installation

Plug and Play, 19-32

With Windows 3.x, 3-18

Modem Update Wizard, 53-64 installing, 53-57 using, 58-64

Index

O online help resources, 96-100

P parity, 92

Plug and Play installation, 19-32 failures, 95

R

RapidComm Voice software faxing with, 48-50 installing, 33-50 troubleshooting, 101

S serial number, modem, 12, 21 shunts, jumper, 10-12, 20 speakerphone feature, 16, 24

149

T

Technical Support Hotline, 99 terminal mode, 96, 99

Terminate and Stay Resident programs, errors and, 93, 94 troubleshooting, 89-94

RapidComm Voice software, 101-102

TSR. See Terminate and Stay Resident programs

Index determining your version, 2

World Wide Web (WWW), 3Com online support and, 96-100 x2 technology, 2, 53-64

X

U upgrading/updating modems, 53-64

V

V.17 fax transmissions, errors and, 94

W

Windows 95

150

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