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
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Type of Modem
Initialization String
Flow Control
Installation
Operation
Using Modem Station
Online Help Resources
Are You Still Having Problems?
If You Need to Return the Modem to Us
RapidComm Voice Troubleshooting Tips
A Note to Users with Older Versions of RapidComm Voice on Their Systems
Glossary
100
101
102
102
103
113
114
128
138
138
Technical Quick Reference
AT Command Summary
S Registers
Regulatory Information
Manufacturer’s Declaration of Conformity
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iii
TABLE OF CONTENTS
Caution to the User
IC (Canada)
139
139
139
140
140
141
142
145
148
UL Listing/CUL Listing
Connecting to the Telephone Company
Fax Branding
Radio and Television Interference
For Canadian Modem Users
Limited Warranty
Index
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iv
BEFORE YOU BEGIN (WINDOWS® 95 USERS)
3. When the “System Properties” screen
Determining Available
Resources
appears, click the Device Manager tab.
4. Double-click Computer and the
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:
“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. Click the Windows 95 Start button, point
to Settings, and then click Control Panel.
2. Double-click the System icon.
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1
BEFORE YOU BEGIN (WINDOWS 95 USERS)
Windows 95 version
_________________
Determining Your Version of
Windows 95
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
Upgrading to x2™ Technology
desktop with the right mouse button.
2. Click Properties.
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*.
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.
·
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
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2
MODEM INSTALLATION WITH WINDOWS® 3.X
A Word about COM Ports
and IRQs
You’ll need these items from your
Sportster ® modem box:
Most computer accessories — a mouse,
sound card, enhanced graphics card, scanner,
etc. — require a special connection through
which they can communicate with the
modem
phone cord
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
Connections™ CD
microphone
Plus:
determined by the setting on the modem’s
COM jumper pins.
a screwdriver (not included)
Each COM port uses an interrupt request
(IRQ). An accessory uses an IRQ to get the
attention of your computer’s central
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3
MODEM INSTALLATION WITH WINDOWS 3.X
processing unit (CPU) so that the accessory
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.
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.
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.
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4
MODEM INSTALLATION WITH WINDOWS 3.X
determine which COM and IRQ settings
the older modem is using.
How to Use ComTest to
Determine Your Modem’s
Settings
· If a modem is not currently installed in
your computer, click Recommend
settings for a new modem.
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
Then click Next.
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
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5
MODEM INSTALLATION WITH WINDOWS 3.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.
5. If you have a free setting, you will see a
screen like this.
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MODEM INSTALLATION WITH WINDOWS 3.X
Click Finish to exit ComTest. Go to “What
to Do with ComTest’s Recommendation”
on page 8.
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
6. When you see this screen, click Finish to
installed modem option. Follow the
exit ComTest.
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.
Turn off and unplug your computer and
remove your present modem. Go to “How to
Change the Modem’s Settings” on page 10.
Go to “What to Do with ComTest’s
Recommendation” on page 8.
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7
MODEM INSTALLATION WITH WINDOWS 3.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 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
If ComTest recommended COM1/ IRQ4
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.
Write down “COM1” and “IRQ4” somewhere
where it will be handy during software
installation. Go to “How to Change the
Modem’s Settings” on page 10.
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8
MODEM INSTALLATION WITH WINDOWS 3.X
If you do not have a sound card, use
into that port will not work after the port
has been disabled.
· Then return to this point in this manual to
continue.
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.
After disabling COM2, you can use the
COM2/IRQ3 setting.
If you do have a sound card, use
Write “COM2” and “IRQ3” somewhere
where it will be handy during software
installation and go to “How to Change the
Modem’s Settings” on page 10.
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.
If ComTest reports that “You do not
have any available COM ports and/ or
IRQs”
· 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
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.
somewhere else. Any accessory plugged
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9
MODEM INSTALLATION WITH WINDOWS 3.X
· Find out which socket is COM1 and which
software installation. Go to “How to Change
the Modem’s Settings” (on this page).
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 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
· 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.
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.
If you’ve disabled COM1, you can now use
the COM1/IRQ4 setting. Write it down
somewhere where it will be handy during
2. Find the COM and IRQ jumper shunts
(small black plastic pieces) on your
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10
MODEM INSTALLATION WITH WINDOWS 3.X
modem’s jumper pins (see the following
diagram).
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.
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.
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11
MODEM INSTALLATION WITH WINDOWS 3.X
4. Move the jumper shunt to the new setting.
How to Insert the Modem
into the Computer
· The COM port setting can involve one
to three shunts. The four possible COM
port settings are as follows:
COM 1
COM2
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.
COM 3
COM4
· 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.
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12
MODEM INSTALLATION WITH WINDOWS 3.X
1. Turn off your computer and unplug it from
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.
the electrical outlet.
2. Unplug any peripheral devices (printer,
monitor, keyboard, mouse, etc.) from the
computer.
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.
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13
MODEM INSTALLATION WITH WINDOWS 3.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
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14
MODEM INSTALLATION WITH WINDOWS 3.X
modem all the way into the slot. If you feel
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.
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.
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.
6. Once the modem is in place, fasten it firmly
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.
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.
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15
MODEM INSTALLATION WITH WINDOWS 3.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.
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16
MODEM INSTALLATION WITH WINDOWS 3.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.
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17
MODEM INSTALLATION WITH WINDOWS 3.X
18.In the Interrupt Request Line (IRQ)
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.
box, select the IRQ that ComTest
recommended.
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.
19.Click OK.
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18
MODEM INSTALLATION WITH WINDOWS® 95
Since your new Sportster is a “Plug and Play”
You will need these items from your
Sportster ™ modem box:
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.
How to Prepare for Plug and
Play Installation
modem
phone cord
microphone
1. Touch an unpainted metal part of your
computer (the back is usually unpainted) to
discharge static electricity. Static can
damage your modem.
Connections™ CD
Plus:
2. Take the modem out of its plastic bag.
a screwdriver (not included)
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19
MODEM INSTALLATION WITH WINDOWS 95
jumper shunts so they are hanging as in the
following diagram.
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.
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
NOTE: If you need to move the jumper
shunts, grasp them with a tweezers or a needle-
nosed 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.
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20
MODEM INSTALLATION WITH WINDOWS 95
1. Turn off your computer and unplug it from
How to Insert the Modem
into the Computer
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
TIP: Before you unplug any cords,
label them or make a sketch of how
they are connected. This can be helpful
when you plug them back in later.
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.
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
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21
MODEM INSTALLATION WITH WINDOWS 95
in the following diagrams. Your computer
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).
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.
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22
MODEM INSTALLATION WITH WINDOWS 95
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
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23
MODEM INSTALLATION WITH WINDOWS 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
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.
damaged if you use a digital phone line.
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.
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24
MODEM INSTALLATION WITH WINDOWS 95
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
Click Driver from disk provided by
Windows 95 Version 950b” on page 29.
Otherwise, follow these instructions.
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.
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.
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25
MODEM INSTALLATION WITH WINDOWS 95
2. When you see this screen, insert the
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.
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.)
Click OK. Windows will load the modem’s
drivers.
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26
MODEM INSTALLATION WITH WINDOWS 95
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.
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27
MODEM INSTALLATION WITH WINDOWS 95
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.
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28
MODEM INSTALLATION WITH WINDOWS 95
Installing Modem Drivers with
Windows 95 Version 950b
2. When you see the following screen, click
Finish.
1. When Windows restarts, it should detect
the modem (see following screen image).
Insert the Connections CD and click Next.
NOTE: If this screen does not
appear, go to the section titled “When
Plug and Play Fails” on page 95.
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29
MODEM INSTALLATION WITH WINDOWS 95
3. Once Windows 95 has installed the
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
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.
Settings. Then click Control Panel.
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MODEM INSTALLATION WITH WINDOWS 95
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.
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MODEM INSTALLATION WITH WINDOWS 95
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.
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SOFTWARE INSTALLATION AND TESTING
Additionally, RapidComm Voice software lets
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.
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.
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.
NOTE: If you have an older
version of RapidComm Voice software
installed on your system, uninstall it
before continuing.
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SOFTWARE INSTALLATION AND TESTING
1. From the Windows 95 desktop, click the
3. You will briefly see a screen that looks like
Start button and then click Run.
this.
4. When you are asked if you wish to run the
Setup Wizard, click Yes.
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.)
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SOFTWARE INSTALLATION AND TESTING
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.
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SOFTWARE INSTALLATION AND TESTING
7. When you see the next two screens, fill in
8. You will see the following screen as the
Setup Wizard creates a U.S. Robotics
Connections program group.
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.
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.
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SOFTWARE INSTALLATION AND TESTING
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.
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SOFTWARE INSTALLATION AND TESTING
11.When you see this screen, you are ready to
12.When you see this screen…
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.
· 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.
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SOFTWARE INSTALLATION AND TESTING
· 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.
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.
14.The next screen indicates that the Setup
Wizard is finished. Click OK to launch the
Connections CD-ROM.
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SOFTWARE INSTALLATION AND TESTING
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.
Windows 95 users: Windows will restart
and the Connections CD will launch
automatically upon restart.
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SOFTWARE INSTALLATION AND TESTING
15.When the main Connections menu appears,
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.
click Business & Productivity on the
menu on the left hand side of the screen
(circled below).
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SOFTWARE INSTALLATION AND TESTING
17.The next screen contains another menu on
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).
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.
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SOFTWARE INSTALLATION AND TESTING
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
20.You will see this screen as files are copied.
RapidComm Voice files to a different
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SOFTWARE INSTALLATION AND TESTING
This screen marks the end of the
RapidComm Voice installation. Click
OK to return the Connections.
21.When you see this screen, click eitYheers or No.
23.Click Exit (circled in the following screen
image).
·
If you clickYes, 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 clickNo, RapidComm Voice will not be
selected as the default printer. When you want to
send a fax, you must seleRctapidComm Voice as
the printer in the program from which you are
printing.
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SOFTWARE INSTALLATION AND TESTING
24.Restart Windows by clicking the Windows
26.The following is the first “RapidComm
Voice Setup Wizard” screen. After you
read the screen, click Next.
Start button and pointing to Shut Down.
Click Restart the Computer? on the
“Shut Down Windows” screen. Then click
Yes.
25.When your desktop appears, click
Windows Start. Point to Programs. Then
point to RapidComm Voice.
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SOFTWARE INSTALLATION AND TESTING
27.When you see this screen, verify the
28.After you verify the information on this
screen, click Next.
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.
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SOFTWARE INSTALLATION AND TESTING
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.
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SOFTWARE INSTALLATION AND TESTING
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.
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.)
· 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.
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
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SOFTWARE INSTALLATION AND TESTING
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.
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SOFTWARE INSTALLATION AND TESTING
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.
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SOFTWARE INSTALLATION AND TESTING
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.
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INSTALLING OTHER FAX/ DATA SOFTWARE
Your modem was designed for and tested
Initialization String
using a wide range of communications software
For hardware flow control, a fixed serial port
packages. This section will guide you through
rate, and full result codes, type AT&F1 and
some of the details you may need to know
then press ENTER. If you must use software
when installing communications software
flow control, type AT&F2 and then press
packages other than RapidComm Voice
ENTER.
(included on the Connections CD-ROM).
Flow Control
Type of Modem
For hardware flow control (highly
Most communications software programs will
recommended), select RTS/CTS. For
ask you to select the type of modem you are
software flow control, select XON/XOFF.
using. Select a U.S. Robotics Sportster high
You may need to disable the flow control
speed modem. If that selection is not listed,
pick Courier Dual Standard, V.32bis, or V.
(hardware or software) that you are not using.
34.
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U.S. ROBOTICS MODEM UPDATE WIZARD
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)
33.6 K to 56 K (upgrade)
= FREE
= $FEE*
= FREE
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.
56 K
to 56 K (update)
* Fee for upgrades is subject to change.
NOTE: You can obtain this software
from our BBS (847-982-5092) or from our
you do not have a Connections CD-ROM.
Installation
1. Insert the Connections CD-ROM into your
CD-ROM drive.
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U.S. ROBOTICS MODEM UPDATE WIZARD
3. From the main Connections menu, click
2. Click the Windows Start menu and point to
Programs. Point to U.S. Robotics
Customer Support (circled in the following
screen shot).
Connections. Then click Connections.
NOTE: Windows 3.x users launch the
CD-ROM by clicking the Connections icon
in the Connections program group.
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U.S. ROBOTICS MODEM UPDATE WIZARD
4. When the Customer Support menu appears,
5. Next, click Learn More & Get Software
click Modem Update Wizard (circled in the
(circled in the following screen shot).
following screen shot).
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U.S. ROBOTICS MODEM UPDATE WIZARD
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.
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U.S. ROBOTICS MODEM UPDATE WIZARD
8. The next screen indicates where the installer
9. You will see the following screen for a moment
as the installer creates the Modem Update
Wizard program group.
will store the files for the Update Wizard. If the
indicated location is acceptable, click Next.
Otherwise, click Browse to find an acceptable
directory.
10.This screen indicates that the setup is
complete. Click OK.
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U.S. ROBOTICS MODEM UPDATE WIZARD
3. This brings up the license agreement. After
Operation
reading the license agreement, click Accept to
continue.
1. Click the Windows Start button. Point to
Programs. Then point to U.S. Robotics
Modem Update Wizard. Finally, click
Modem Update Wizard.
2. After you read the “Welcome” screen, click
Next.
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U.S. ROBOTICS MODEM UPDATE WIZARD
4. The software will now detect any modems
5. The program will now determine if the selected
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.
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.
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U.S. ROBOTICS MODEM UPDATE WIZARD
· Click Other to learn more about how to
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.
purchase a U.S. Robotics x2 modem.
Upgradable Modems
If the modem IS software upgradable, you will
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.
see the following screen.
Click Dial U.S. Robotics (which should be
the default selection) in the pull-down menu.
Click Upgrade to x2 Technology if you wish
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U.S. ROBOTICS MODEM UPDATE WIZARD
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.
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U.S. ROBOTICS MODEM UPDATE WIZARD
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: 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
NOTE: Users purchasing a 56K upgrade are
asked if the charge is acceptable (see the following
screen image). Unless you have already been
automatically downloads the file.
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.)
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U.S. ROBOTICS MODEM UPDATE WIZARD
9. You will see this screen as the Wizard
WARNING! To avoid the risk of
damaging your modem, DO NOT turn off
the modem while it is being updated.
downloads the file for your modem.
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.
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63
U.S. ROBOTICS MODEM UPDATE WIZARD
13.Click OK once you verify that the process was
12.You will see a “Congratulations!” screen.
Click Details.
a success. When you return to the
“Congratulations!” screen, click Finished.
Congratulations!
Enjoy the benefits of your updated Sportster
modem!
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USING MODEM STATION
¨ You may want to “tweak” your modem for
What Does Modem Station
Do?
optimum performance.
¨ You’d rather be surfing the Internet.
¨ 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!
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.
Why Modem Station?
¨ Modem commands can be confusing and
difficult to memorize.
¨ Communications software often needs
technical information about your modem.
3. Double-click the CD-ROM icon.
4. Double-click the USR Tools folder.
5. Double-click the umssetup icon.
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65
USING MODEM STATION
6. You will be asked whether you wish to
9. When you see this screen, click Next to
accept the default directory or click
Browse to change directories.
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.
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66
USING MODEM STATION
10.Click Next on the following screen to
11.When you see the following screen, click
Finish to complete the installation.
accept the default program folder. You can
place Modem Station in an existing folder
by selecting one from the list.
If this is the first time you’ve installed
Modem Station, you may be asked to
restart your computer.
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USING MODEM STATION
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.
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USING MODEM STATION
The main menu gives you direct access to
the following options:
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.
¨ DETECT NEW MODEMS
¨ TERMINAL
¨ MODEM CONFIGURATOR
¨ ABOUT
¨ CONTACT/SUPPORT
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.
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.
ABOUT
TERMINAL
The About option provides copyright and
version information.
Terminal allows you to send commands
directly to your modem and displays the
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USING MODEM STATION
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 s upport
avenues . For s pecific ques t ions ,
our fax-on-demand s ervice is a
good place t o s t art . You can
download FAQs , s oft ware, and help
files from our Web s it es and BBS,
or receive individualized s upport
via s upport @us r.com. Type 0000 (4
zeroes ) in t he s ubject 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.
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USING MODEM STATION
2. Click Scan to have Modem Station check
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.
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.
NOTE: Different s ys t ems and
BIOSes us e different met hods of
dis abling COM port s . As a res ult ,
we cannot provide s upport for
enabling COM port s . Pleas e refer
t o your s ys t em’s document at ion or
cont act t he manufact urer of your
s ys t em for furt her informat ion.
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USING MODEM STATION
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.
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.
Using Terminal
You can access Terminal from either the Main
menu or the Detect New Modems screen.
Clicking Terminal brings up the Terminal
window.
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72
USING MODEM STATION
NOTE: Modem St at ion’s
Terminal window is provided
primarily for t roubles hoot ing
convenience. If you frequent ly us e
BBSs , you will probably want t o
us e a s eparat e, full-feat ured
Terminal program like t he one
provided in our RapidComm
s oft ware.
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
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USING MODEM STATION
modem. We will discuss port speed settings in
detail later in this section.
When you are finished using Terminal, click
Exit to return to the screen you accessed it
from.
Terminal includes a basic auto dialer.
To have Terminal dial a number for you, click
Dial to bring up the “Dial” screen.
Using Modem Configurator
You can access Modem Configurator from
either the Main menu or the Detect New
Modems 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.
Click Modem Configurator to bring up this
menu.
You can end a call by clicking Hang Up at the
bottom of the screen.
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USING MODEM STATION
The Modem Configurator menu gives you
access to the following options:
The “Data Control” screen allows you to
assign the following basic communications
settings:
¨
¨
¨
¨
¨
¨
¨
¨
DATA CONTROL
CONNECTION CONTROL
MODEM TO COMPUTER
CONNECTION RATES
DIALING/ANSWERING
STORED NUMBERS
RESTORE DEFAULTS
EXIT
¨
¨
¨
¨
¨
¨
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.
Data Control
This is the “Data Control” screen.
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.
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USING MODEM STATION
CONNECTION CONTROL
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 is where you adjust your modem’s
connection and transmission settings.
Click Connection Control to bring up this
screen.
This screen also displays the default DIP
switch settings.
TECHNICAL STUFF: DIP
s wit ches are t iny s wit ches t hat
cont rol a few bas ic funct ions on
s ome ext ernal modems . On
modems wit hout DIP s wit ches ,
t hes e funct ions are handled by
modem commands .
In the upper left hand corner of this screen,
you will find the current Connection Control
settings.
Click Exit to return to the Modem
Configurator menu.
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USING MODEM STATION
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.
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.
Click Help for quick definitions of terminology
used in this screen.
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USING MODEM STATION
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.
If you look in the upper left hand corner of the
display, you will see the commands currently in
use.
For details on using the commands in this
screen, refer to the “Glossary” or “Technical
Quick Reference” sections of this manual.
The “Modem to Computer” screen allows you
to configure the following settings:
Click Help to see quick definitions of
terminology used in this screen.
¨
¨
¨
LOCAL ECHO
RESULT CODES
RESULT CODE PREFERENCES
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.
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USING MODEM STATION
CONNECTION RATES
In the upper left hand corner of the screen you
will see the current connection commands.
The “Connection Rates” screen allows you to
configure modem speeds and protocols.
This screen allows you to configure the
following settings:
WARNING! Us e caut ion
when changing connect ion
s et t ings . Improper s et t ings may
caus e your modem t o funct ion
incorrect ly, dis connect , or fail t o
connect at all.
¨
¨
¨
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.
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USING MODEM STATION
DIALING/ ANSWERING
The next screen allows you to adjust how your
modem initiates and receives calls.
TECHNICAL STUFF:
“Negot iat ion” is t he nois e we hear
when t wo modems connect . The
modems exchange informat ion
about t heir res pect ive prot ocols
and configurat ions . Once t hey
agree on t he fas t es t prot ocol t hey
can bot h handle, t rans mis s ion
begins .
STORED NUMBERS
The “Stored Numbers” screen displays the
phone numbers currently stored in your
modem’s memory.
Using this screen, you can configure the
following dial settings:
¨
¨
¨
¨
¨
WAIT FOR CARRIER
AUTO-ANSWER # OF RINGS
SPEAKER OPERATION
DIALING METHOD
Use this screen to edit or add numbers stored
in the modem’s memory.
SPEAKER VOLUME
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USING MODEM STATION
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.
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.
Once you enter the numbers you wish to store,
click Save to Modem to store them. Click
Exit to return to the Main menu.
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.
The last option, Restore Defaults, resets your
modem to factory specifications. This option is
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USING MODEM STATION
available from many of the screens within
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.
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.
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
TIP: Res t ore Default s will s et
your modem back t o fact ory
information without memorizing the commands.
s pecificat ions . It is a good place t o
s t art when t roubles hoot ing.
From the “Detect New Modems” screen, click
Extended Information.
The “Extended Information” screen provides
access to the following information about your
modem:
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.
¨
¨
¨
¨
ROM CHECKSUM
PRODUCT
ACTIVE PROFILE
STORED PROFILE
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USING MODEM STATION
¨
¨
¨
¨
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.
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USING MODEM STATION
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.
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.
Your modem is able to store two
configurations or “profiles.” Only one can be
active at any time.
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USING MODEM STATION
The two lines below the connection settings are
same format as the “Active Profile” screen with
the addition of stored phone numbers.
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.
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.
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
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USING MODEM STATION
The “Configuration” screen displays the
following information about your modem.
· Product Type displays the information
relating to the make and model of your
modem.
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.
· Options displays the protocols available to
your modem.
· DSP Date is the date of the ‘firmware’ that
controls the DSP in 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
· 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.
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USING MODEM STATION
· DAA Country displays the countries your
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.
modem is designed for. This is important
because phone systems and
telecommunications laws vary from country
to country.
Click Link Diagnostics to bring up the “Link
Diagnostics” screen.
· 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.
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USING MODEM STATION
The rest of the screen contains information
your Courier documentation for instructions on
configuring these special features.
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.
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.
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.
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
our BBS (847-982-5092).
Courier modem users will see a display of
current Dialback/Security settings. Refer to
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TROUBLESHOOTING AND ONLINE HELP RESOURCES
PROBLEM
DIAGNOSIS
POSSIBLE SOLUTION
The computer or Your modem might not Make sure the modem is turned on. The power switch is on top of external
software will not be turned on.
recognize the
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.
modem.
When entering commands in a terminal program, type in all upper case (AT) or
You may not be enteringall lower case (at).
modem commands in
the proper manner while
in terminal mode.
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.
You may have a COM
port/IRQ conflict.
COM 1
COM 2
COM 3
COM 4
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TROUBLESHOOTING AND ONLINE HELP RESOURCES
PROBLEM
DIAGNOSIS
You may have a COM
port/IRQ conflict (cont.).
POSSIBLE SOLUTION
Make sure you have the correct COM port and IRQ settings in
your software and/or in the Windows Device Manager.
The computer or software
will not recognize the
modem (cont.).
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.
The modem displays double
characters on your monitor.
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.
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.
You may have plugged
your modem’s phone cord
into a digital line.
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.
You might have a bad
phone cord connection to
your modem.
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.
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.
You may have a poor line
connection.
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TROUBLESHOOTING AND ONLINE HELP RESOURCES
PROBLEM
DIAGNOSIS
POSSIBLE SOLUTION
The modem won’t go off
hook to dial or doesn’t
answer the phone (cont.)
If you have voice mail,
your dial tone may be
altered when messages are
waiting.
Answer your voice mail to restore your normal dial tone.
Your software may not
have auto answer enabled.
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.
You may have a poor line
connection.
Both modems exchange
carrier signals but fail to
establish a link.
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.
There may be line splitters
or other devices between
your modem and the
phone jack.
Your 33.6 kbps modem
cannot achieve a 33.6 kbps
Internet connection.
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.
The phone line you are
currently using may not be
clean enough to achieve a
33.6 kbps connection.
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TROUBLESHOOTING AND ONLINE HELP RESOURCES
PROBLEM
DIAGNOSIS
POSSIBLE SOLUTION
Your modem won’t connect The modem you’re trying
at 2400 bps with a 2400 bps to connect with could be
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.
modem.
an older model that
doesn’t support error
control.
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)
Your screen keeps
displaying random garbage
characters.
You could have a conflict
with the remote modem’s
settings for word length,
parity, and stop bits.
Make sure the software and modem have the same flow control
settings (hardware [RTS/CTS] and software [xon/xoff]).
Your software and modem
might not be set to the
same flow control settings.
In terminal mode, type AT&F1 and press ENTER to load the
optimal settings.
The best flow control
settings might not be
enabled on your modem.
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TROUBLESHOOTING AND ONLINE HELP RESOURCES
PROBLEM
DIAGNOSIS
POSSIBLE SOLUTION
Your communications
software is reporting many
cyclic redundancy check
(CRC) errors and low
characters per second
(CPS).
You may have a bad
phone line.
Try placing the call again. The phone company routes calls
differently each time.
Optimum flow control
settings may not be
enabled on your modem.
In terminal mode, type AT&F1 and press ENTER to load the
optimum hardware flow control settings.
The serial port rate in
your communications
software may be set too
high for your modem’s
UART or your area’s
phone lines.
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.
The remote site you are
dialing into may have
trouble with the file
transfer protocol.
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.
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.
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TROUBLESHOOTING AND ONLINE HELP RESOURCES
PROBLEM
DIAGNOSIS
POSSIBLE SOLUTION
Your communications
software is reporting many
cyclic redundancy check
(CRC) errors and low
characters per second (CPS)
(cont.).
You may be trying to
download a file to a
compressed area of your
hard disk.
Download to an uncompressed area on your hard drive.
In your communications software, change the modem
initialization string to AT&H3&I2&R2S7=90.
Your modem initialization
string could be insufficient
for fax transmissions.
Errors are constantly
occurring in your V.17 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
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.
communications.
Lower baud rate to 9600, 7200, or 4800.
Your baud rate may be set
too high.
Open the file in the application in which it was created. Select
RapidComm as the printer and then print the file.
You may be trying to fax
a compressed file
Make sure RapidComm’s port settings are correctly set for your
modem.
RapidComm fails to
initialize the modem.
RapidComm’s port
settings may be incorrect.
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TROUBLESHOOTING AND ONLINE HELP RESOURCES
2. Click Windows 95 Start, point to
When Plug and Play Fails
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
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.
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
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TROUBLESHOOTING AND ONLINE HELP RESOURCES
reading to learn about our support
options.
Online Help Resources
Connecting to the 3Com BBS
3. Type ATDS0 and press ENTER.
To connect to the 3Com Bulletin Board
System, follow these steps:
NOTE: ATDS0 automatically dials
1-847-982-5092, the 3Com BBS.
1. Start the RapidComm Voice program.
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.
The software settings for the BBS are:
ANSI terminal emulation
Data Bits: 8
Parity: None
Stop Bits: 1
2. Put RapidComm Voice in Terminal mode
by clicking on the Terminal button.
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TROUBLESHOOTING AND ONLINE HELP RESOURCES
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.
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TROUBLESHOOTING AND ONLINE HELP RESOURCES
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.
3. Type the name of the file you wish to
receive. You have three manual formats
from which to choose:
6. When the file transfer is complete, and
you are ready to leave the BBS, type G
(for Good-bye) from the main menu.
· VOICE336.EXE—The guide in a self-
extracting Word for Windows v6.0
format.
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.
· VOICE336.PDF—The guide in .pdf
format (readable using Adobe
Acrobat, which is available on the
Connections CD-ROM).
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TROUBLESHOOTING AND ONLINE HELP RESOURCES
Internet FTP
CompuServe
Provides free library containing the same files
as the BBS site. FTP to ftp.usr.com.
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.
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
America Online
document e-mailed to you, send the
document's number as the subject.
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.
World Wide Web
A U.S. Robotics Home Page containing the
same information as the Internet on Demand
listing. Log on to:
Technical Support Hotline
Technical questions about U.S. Robotics
modems can also be answered by technical
support representatives. The hotline is a toll
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99
TROUBLESHOOTING AND ONLINE HELP RESOURCES
call. In order to save both time and expense,
(Hours: 8:00 am - 6:00 pm CST)
you should do the following before calling:
Priority No-Hold Service
1. Click the Windows 95 Start button.
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.
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.)
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.)
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.
Are You Still Having
Problems?
·
·
Review this manual.
Call or visit your modem dealer. They
may be able to assist you. This is much
Hotline
(847) 982-5151
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100
TROUBLESHOOTING AND ONLINE HELP RESOURCES
more efficient and time-saving than
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:
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.
·
3Com
Attn: RMA
If You Need to Return the
Modem to Us
SRO#
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
6201 W. Oakton, East Dock
Morton Grove, IL 60053
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101
TROUBLESHOOTING AND ONLINE HELP RESOURCES
PROBLEM: RapidComm Voice does not
work properly at 115.2 kbps.
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.
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.
PROBLEM: The station ID works
intermittently.
DIAGNOSIS: Under certain circumstances
(including receiving a fax), the station ID may
not work properly.
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102
GLOSSARY
Cross references are printedbinoldface. Cross references
application
with items in the Command Summary, found in the
Technical Quick Reference (Section D), are printed in
italics.
A computer program designed to perform a specific task
or set of tasks. Examples include word processing and
spreadsheet applications.
analog loopback
ARQ
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.
Automatic RepearteQuest. A function that allows your
modem to detect flawed data and request that it be
retransmitted. SeMe NP andV.42.
ASCII
analog signals
American Standard Code for Information Interchange. A
code used to represent letters, numbers, and special
characterssuch as $, !, and /.
A variety of signals and wavelengths that can be
transmitted over communications lines such as the sound
of a voice over the phone line.
asynchronous transmission
answer mode
Data transmission in which the length of time between
transmittedcharactersmay vary. Because characters may
not be transmitted at set intervasltsa, rt/stopbits are used
to mark the beginning and end of each character.
The mode used by your modem when answering an
incoming call from an originating modem. The
transmit/receive frequencies are the reverse of the
originating modem, which isoirniginate mode.
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103
GLOSSARY
auto answer
bit rate
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.”
Also referred to as transmission rate. The number of
binary digits, or bits, transmitted per seconbdp(s).
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) bits per second (bps)
or ATDP (dial pulse) command followed by the telephone
number. Auto dial is used to dial voice numbers. See
command Dn.
The bits (binary digits) per second rate. Thousands of
bits per second are expressed as kilobits per second
(kbps).
baud rate
buffer
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.
A temporary memory area used as storage during input
and output operations. An example is the modem's
command buffer.
byte
binary digit
A group ofbinary digitsstored 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.
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.
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104
GLOSSARY
carrier
cyclic redundancy checking (CRC)
The basic signal altered or modulated by the modem in
order to carry information.
An error-detection technique consisting of a test
performed on each block ofrrame of data by both sending
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.
character
A representation, codedbininary digits, of a letter,
number, or other symbol.
characters per second (CPS)
A data transfer rate generally estimated frombtihterate
and thecharacterlength. For example, at 240b0ps, 8-bit
characters withstart/stop bits(for a total of ten bits per
character) will be transmitted at a rate of approximately
240 characters per secondcp(s). Someprotocols, such as
data communications
The transmission or sharing of data between computers via
an electronic medium.
data compression table
error-control protocols, employ advanced techniques such A table containing values assigned forcehaacrhacter
as longer transmissiofnramesanddata compressionto
increasecps.
during a call undeMr NP5 data compressionD. efault
values in the table are continually altered and built during
each call: The longer the table, the more efficient
throughputgained.
class 1 and 2.0
International standards used by faapxplication programs
andfaxmodems for sending and receiving faxes.
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105
GLOSSARY
data mode
digital loopback
Mode used by a modem when sending and receiving data
files.
A test that checks the modem's RS-232 interface and the
cable that connects thteerminal or computer and the
modem. The modem receives data (in the formdiogfital
signals) from the computer or terminal, and immediately
returns the data to the screen for verification.
DCE
Data Communications(or Circuit-Terminating)
Equipment, such as dial-up modems that establish and
control the data link via the telephone network.
digital signals
Discrete, uniform signals. In this manual, the term refers to
thebinary digits0 and 1.
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.
DTE
DataTerminal (or Terminating) Equipment. A computer
that generates or is the final destination of data.
detect phase
duplex
In theITU-T V.42 error-controlprotocol, the first stage in
establishing if both modems attempting to connect have
V.42capability.
Indicates a communications channel capable of carrying
signals in both directions. Sheaelf duplex, full duplex.
dictionary
The term used for compression codes built byVth.4e2bis
data compression algorithm.
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106
GLOSSARY
Electronic Industries Association (EIA)
frame
Group which defines electronic standards in the U.S.
A data communicationsterm 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.
error control
Various techniques that check the reliabilitcyhoafracters
(parity) or blocks of dataV. .42andMNP error-control
protocolsuse error detectionC(RC) and retransmission of
flawedframes(ARQ).
full duplex
Signals can flow in both directions at the same time over
one line. In microcomputer communications, may refer to
the suppression of the onlilnoecal echo.
facsimile
A method for transmitting the image on a page from one
point to another. Commonly referred to as fax.
half duplex
Signals can flow in both directions, but only one way at a
time. In microcomputer communications, may refer to
activation of the onlinloecal echo, which causes the
modem to send a copy of the transmitted data to the
screen of the sending computer.
fax mode
The mode used by a modem to send and receive data in
facsimileformat. See definitions foVr.17, V.27ter, V.2.9
flow control
A mechanism that compensates for differences in the flow
of data into and out of a modem or other device. See
commands &Hn, &In, &Rn.
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107
GLOSSARY
Hz
MNP
Hertz, a frequency measurement unit used internationally
to indicate cycles per second.
Microcom Networking Protocol, an error-contprrooltocol
developed byMicrocom, Inc., and now in the public
domain. There are several different MNP protocols, but
the most commonly used one ensures error-free
transmission through error detectiConR(C) and
retransmission of flawefdrames.
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
America is observed internationallyITaUs -T V.22. For
2400-bps communication, most U.S. manufacturers
observe V.22bis.
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 signalsbefore passing them to the receiving
computer.
LAPM
Link Access Procedure for Modems. An error-control
protocoldefined inITU-T Recommendation V.42. Like
theMNP protocols, LAPM usecsyclic redundancy
checking(CRC) and retransmission of corrupted data
(ARQ) to ensure data reliability.
nonvolatile memory (NVRAM)
User-programmable random access memory whose data is
retained when power is turned off. On tShpeortster
modem, it includes four stored phone numbers and the
modem settings.
local echo
A modem feature that enables the modem to display
keyboard commands and transmitted data on the screen.
See command En.
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).
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108
GLOSSARY
online fall back/ fall forward
protocol
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.
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 RAM
frequencies are the reverse of the called modem, which is in Random Access Memory. Memory that is available for
answer mode.
use when the modem is turned on, but that clears of all
information when the power is turned off. The modem's
RAM holds the current operational settingfslo,wa
controlbuffer, and a commandbuffer.
parity
A simple error-detection method that checks the validity
of a transmittedcharacter. Character checking has been
surpassed by more reliable and efficient forms of error
checking, includinVg.42andMNP 2-4 protocol.sEither
the same type ofparity must be used by two
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.
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109
GLOSSARY
ROM
throughput
Read Only Memory. Permanent memory, not user-
programmable.
The amount of actual user data transmitted per second
without the overhead opfrotocolinformation such as
start/stop bitsor frame headers and trailers. Compare
with characters per secon.d
serial transmission
The consecutive flow of data in a single channel. Compare
to parallel transmissions where data flows simultaneously
in multiple channels.
V.8
TheITU-T standard specification that covers the initial
handshaking process.
start/ stop bits
The signaling bits attached tcohaaracterbefore and after
the character is transmitted duriansgynchronous
transmission.
V.17 fax
AnITU-T standard for makinfgacsimileconnections at
14,400 bps, 12,000bps, 9,600bps, and 7,200bps.
terminal
V.21
A device whose keyboard and display are used for sending AnITU-T standard for modems operating in
and receiving data over a communications link. Differs
from a microcomputer or a mainframe in that it has little or
no internal processing capabilities.
asynchronous mode at speeds up to 3b0p0s,full-duplex,
on public switched telephone networks.
V.22
terminal mode
Software mode that allows direct communication with the
modem. Also known as command mode.
AnITU-T standard for modem communications at 1200
bps, compatible with the Bell 212A standard observed in
the U.S. and Canada.
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110
GLOSSARY
V.22 bis
fall forward (switch back up) when line conditions
AnITU-T standard for modem communications at 2400
bps. The standard includes an automatic link negotiation
fallback to 1200bps and compatibility with Bell
212A/V.22 modems.
improve (seeonline fall back/fall forward).
V.34
AnITU-T standard that currently allows data rates as high
as 28,800bps.
V.27 ter
AnITU-T standard forfacsimileoperations that specifies
modulation at 4800bps, with fallback to 2400bps.
V.34+
An enhancement tVo.34that enables data transfer rates as
high as 33,600bps.
V.29
AnITU-T standard forfacsimileoperations that specifies
modulation at 9600bps, with fallback to 7200bps.
V.42
AnITU-T standard for modem communications that
defines a two-stage process of detection and negotiation
for LAPMerror contro.l
V.32
AnITU-T standard for modem communications at 9600
bps and 4800bps. V.32 modems fall back to 480b0ps
when line quality is impaired.
V.42 bis
An extension oIfTU-T V.42 that defines a specific data
compression scheme for use during V.42 connections.
V.32 bis
AnITU-T standard that extends the V.32 connection
range: 4800, 7200, 9600, 12,000, and 14,400bps. V.32bis
modems fall back to the next lower speed when line
quality is impaired, fall back further as necessary, and also
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111
GLOSSARY
Xmodem
Ymodem G
The first of a family oferror controlsoftwareprotocols
used to transfer files between modems. These protocols
are in the public domain and are available from many
bulletin board services.
Similar toYmodem, except it includes no error checking,
which makes it faster.
Zmodem
Similar toXmodem andYmodem, except it includes batch
transfer, the ability to recover from a partially complete
transfer, anautostart feature, and improved efficiency.
XON/ XOFF
StandardASCII controlcharactersused to tell an
intelligent device to stop/resume transmitting data.
Ymodem
An error-checkinpgrotocolthat can send several files of
data at a time in 1024b-yte (1K) blocks. This protocol can
use either checksums or CRC for error checking.
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112
TECHNICAL QUICK REFERENCE
This section includes information about:
·
·
AT Command Summary
S-Registers
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113
TECHNICAL QUICK REFERENCE
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 &F1¾Hardware Flow Control template
loaded in NVRAM when the modem is shipped. Defaults are listed in italics.
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114
TECHNICAL QUICK REFERENCE
AT
Required command prefix, except
with A/ and +++. Use alone to test
for OK result code.
Command Set
$
Use in conjunction with D, S,
or & commands (or just AT)
to display a basic command
list; online help.
Bn
U.S./ITU-T answer
sequence.
A
Manual Answer: goes off hook
in answer mode. Pressing any
key aborts the operations.
B0
ITU-T answer
sequence
U.S. answer tone
B1
A/
Re-executes the last issued
command. Used mainly to
redial. This does not require
the AT prefix or a Carriage
Return.
Dn
Dials the specified phone
number. Includes the
following:
L
Dials the last dialed
number.
Pulse (rotary) dial
Originates call using
answer (reverse)
frequencies.
A>
Re-executes the last-issued
command continually.
P
R
Any key Aborts off-hook dial/answer
operation and hangs up.
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115
TECHNICAL QUICK REFERENCE
Sn
Dials the phone
number string stored in
NVRAM at position n
(n = 0-3). Phone
numbers are stored
with the &Zn=s
command.
!
(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).
/
W
@
$
T
,
Tone dial
(Comma) Pause, See
S8 definition; which
it’s linked to.
(Semicolon) Return to
Command mode after
dialing.
;
Displays a list of Dial
commands.
“
Dials the letters that
follow (in an
alphabetical phone
number).
En
Sets local echo.
E0
E1
Echo OFF
Modem displays
keyboard commands
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116
TECHNICAL QUICK REFERENCE
Fn
Sets online local echo of
transmitted data ON/OFF.
I0
Four-digit product
code
I1
I2
Results of ROM
checksum
Results of RAM
checksum
Product type
Current modem
settings
Nonvolatile memory
(NVRAM) settings
Link diagnostics
Product configuration
F0
Local echo ON.
Modem sends a copy
of data it sends to the
remote system to your
screen.
Local echo OFF.
Receiving system may
send a remote echo of
data it receives.
I3
I4
F1
I5
I6
I7
Hn
In
Controls ON/OFF hook.
H0
Hangs up (goes on
hook).
Goes off hook.
Ln
Controls speaker volume
(internals only).
H1
L0
L1
L2
L3
Low volume
Low volume
Medium volume
High volume
Displays the following
information.
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117
TECHNICAL QUICK REFERENCE
Q1
Q2
Quiet mode; no result
codes.
Displays result codes
only in Originate mode.
Mn
Operates speaker.
M0
M1
Speaker always OFF.
Speaker ON until
CONNECT.
Sr.b=n Sets bit .b of register r to n
M2
M3
Speaker always ON.
Speaker ON after dial,
until CONNECT.
(0/OFF or 1/ON).
Sr=n Sets register r to n.
On
Returns online.
Sr?
Displays contents of S-
Register r.
O0
O1
Returns online.
Returns online and
retrains.
S$
Displays a list of the S-
Registers.
P
Sets pulse dial (for phone
lines that don’t support
touch-tone dialing).
T
Sets tone dial.
Vn
Displays verbal/numeric
result codes.
Qn
Displays/suppresses result
codes.
V0
V1
Numeric codes
Verbal codes
Q0
Displays result codes.
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118
TECHNICAL QUICK REFERENCE
Xn
Sets result code displayed. Default is X4.
Xn Setting
Result Codes
X0
X1
X2
X3
X4
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
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
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119
TECHNICAL QUICK REFERENCE
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
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120
TECHNICAL QUICK REFERENCE
Z4
Resets modem to
factory default profile
1 (&F1)
Resets modem to
factory default profile
2 (&F2)
Yn
Selects power-on/reset
default configuration.
Y0
Default is profile 0
setting in NVRAM
Default is profile 1
setting in NVRAM
Z5
Y1
&$
Displays a list of
ampersand (&) commands.
Z
Resets modem.
Z0
Resets modem to
&A Enables/disables additional
result code subsets (see
Xn).
NVRAM profile
selected by Y
command or dip 7.
Resets modem to
NVRAM profile 0
Resets modem to
NVRAM profile 1
Resets modem to
factory default profile
0 (&F0)
Z1
Z2
Z3
&A0 ARQ result codes
disabled
&A1 ARQ result codes
enabled
&A2 V.32 modulation
indicator added
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121
TECHNICAL QUICK REFERENCE
&A3 Protocol indicators
added¾
&Dn Controls Data Terminal
Ready (DTR) operations.
LAPM/MNP/NONE
(error control) and
V42bis/MNP5 (data
compression)
&D0 DTR override
&D1 DTR toggle causes
online Command
mode
&D2 Normal DTR
operations
&Bn Manages modem’s serial
port rate.
&B0 Variable, follows
connection rate
&D3 Resets on receipt of
DTR
&B1 Fixed serial port rate
&B2 Fixed in ARQ mode,
variable in non-ARQ
mode
&Fn Loads a read-only (non-
programmable) factory
configuration.
&F0 Generic template
&F1 Hardware flow control
template
&Cn Controls Carrier Detect
(CD) signal.
&C0 CD override
&C1 Normal CD operations
&F2 Software flow control
template
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TECHNICAL QUICK REFERENCE
&H3 Hardware and
software flow control
&Gn Sets Guard Tone.
&G0 No guard tone, U.S.
&In Sets Receive Data (RD)
software flow control (see
also &Rn).
and Canada
&G1 550 Hz guard tone,
some European
countries, requires B0
setting.
&I0 Software flow control
disabled
&G2 1800 Hz guard tone,
U.K., requires B0
setting.
&I1 XON/XOFF signals to
your modem and
remote system
&I2 XON/XOFF signals to
your modem only
&Hn Sets Transmit Data (TD)
flow control (see also &Rn).
&Kn Enables/disables data
&H0 Flow control disabled
&H1 Hardware flow
control, Clear to Send
(CTS)
compression.
&K0 Data compression
disabled
&H2 Software flow control,
XON/XOFF
&K1 Auto enable/disable
&K2 Data compression
enabled
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TECHNICAL QUICK REFERENCE
&K3 MNP5 compression
disabled
&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
&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.
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TECHNICAL QUICK REFERENCE
&Pn Sets pulse (rotary) dial
&Tn Begins test modes (used in
make/break ratio.
conjunction with s register
18).
&P0 U.S./Canada ratio,
39%/61%
&P1 U.K. ratio, 33%/67%
&T0 Ends testing
&T1 Analog Loopback
&T2 Reserved
&T3 Local Digital
Loopback
&T4 Enables Remote
Digital Loopback
&T5 Prohibits Remote
Digital Loopback
&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
&T6 Initiates Remote Digital
Loopback
&Sn Controls Data Set Ready
&T7 Remote Digital with
self-test and error
(DSR) operations.
detector
&S0 DSR override; always
ON
&S1 Modem controls DSR
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TECHNICAL QUICK REFERENCE
&T8 Analog Loopback with
self-test and error
detector
&U12 24,000 bps
&U13 26,400 bps
&U14 28,800 bps
&U15 31,200 bps
&U16 33,600 bps
&Un Sets floor connect speed
when &Un is set greater
than 0. &Nn is the ceiling
connect speed. See &Nn.
&Wn Writes current
configuration to NVRAM
templates.
&U0 Disabled
&U1 300 bps
&W0 Modifies the NVRAM
0 template (Y0)
&W1 Modifies the NVRAM
1 template (Y1)
&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
&Yn Sets break handling.
&Y0 Destructive, but
doesn’t send break
&Y1 Destructive, expedited
&Y2 Nondestructive,
expedited
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TECHNICAL QUICK REFERENCE
&Y3 Nondestructive,
unexpedited
#CID=2
extended information,
including caller’s name.
Caller ID enabled with
&Zn=s Writes phone number string
s to NVRAM at position n
(n = 0-3).
+++ Escapes to online-command
mode.
&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).
&ZL? Displays the last executed
dial string.
#CID=n Controls Caller ID
feature.
#CID=0Caller ID disabled.
#CID=1
Caller ID enabled.
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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
S1
S2
S3
S4
S5
0
0
Sets the number of rings on which to answer in Auto Answer Mode. When set to
0, Auto Answer is disabled.
Counts and stores the number of rings from an incoming call. (S0 must be greater
than 0.)
43
13
10
8
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
127.
0 –
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.
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TECHNICAL QUICK REFERENCE
Register Default
Function
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
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.
S8
S9
2
6
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.
S10
7
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.
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TECHNICAL QUICK REFERENCE
Register Default Function
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.
Note: If you set S10 = 255, the modem will not hang up when carrier is lost.
Dropping DTR hangs up the modem.
S11
S12
70
50
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 (+++).
S13
0
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).
Bit Value Result
0
1
Reset when DTR drops.
1
2
Reset non-MNP transmit buffer from 1.5K to 128
bytes.*
2
3
4
8
Set backspace key to delete.
On DTR signal, auto dial the number stored in
NVRAM at position 0.
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TECHNICAL QUICK REFERENCE
Register Default Function
S13 (cont.)
Bit Value Result
4
16
At power on/reset, Auto Dial the number stored in
NVRAM at position 0.
5
6
7
32
64
128
Reserved
Disable quick retrains.
Disconnect on escape code.
*
The 1.5K-byte non-ARQ buffer allows data transfer wXitmhodem- andYmodem-type file transfer protocols
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.
Bit Value Result
0
1
2
3
4
5
1
2
4
8
16
32
Disable ARQ/MNP for V.22.
Disable ARQ/MNP for V.22bis.
Disable ARQ/MNP V.32/V.32bis/V.32terbo.
Disable MNP handshake.
Disable MNP level 4.
Disable MNP level 3.
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TECHNICAL QUICK REFERENCE
Register Default Function
S15 (cont.) Bit Value Result
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
0
Bit-mapped register setup. To set the register, see instructions for S13.
Bit Value Result
0
1
2
4
1
2
4
8
Reserved
Reserved
Touch tone test.
Use internal test pattern.
S18
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.
S19
S21
0
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.
10
Sets the length, in 10-millisecond units, of breaks sent from the modem to the computer; applies to MNP
or V.42 mode only.
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TECHNICAL QUICK REFERENCE
Register Default Function
S22
S23
S25
17
19
20
Stores the ASCII decimal code for the XON character.
Stores the ASCII decimal code for the XOFF character.
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.)
S27
0
Bit-mapped register setup. To set the register, see instructions for S13.
Bit Value Result
0
1
Enables ITU-T V.21 modulation at 30b0ps for overseas calls; in
V.21 mode, the modem answers both overseas and domestic
(U.S. and Canada) calls, but only originates V.21 calls. (Default
Bell 103)
1
2
3
2
4
8
Enablesunencoded (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.
4
5
6
16
32
64
Enables V.23 fallback mode.
Disables V.32bis mode.
Disable V.42 selective reject.
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TECHNICAL QUICK REFERENCE
Register Default Function
S27 (cont.) Bit Value Result
128
7
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.
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
255
20
-
S29
S30
S31
S32
-
Reserved
2
Bit-mapped register setup. To set the register, see the instructions for S13.
Bit Value Result
0
1
1
2
V.8 Call Indicate enabled.
Enables V.8 mode.
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TECHNICAL QUICK REFERENCE
Register Default Function
S32 (cont.) Bit Value Result
2
4
Reserved.
3
4
8
16
Disable V.34 modulation.
Disable V.34+ modulation.
5-7
32-128 Reserved.
S33
0
Bit-mapped register setup. To set the register, see the instructions for S13.
Bit Value Result
0
1
2
3
4
5
6
7
1
2
4
8
16
32
64
128
Disable 2400 symbol rate.
Disable 2743 symbol rate.
Disable 2800 symbol rate.
Disable 3000 symbol rate.
Disable 3200 symbol rate.
Disable 3429 symbol rate.
Reserved
Disable shaping.
S34
0
Bit-mapped register setup. To set registers, see instructions for S13.
Bit Value Result
0
1
Disable 8S-2D trellis encoding.
1
2
Disable 16S-4D trellis encoding.
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TECHNICAL QUICK REFERENCE
Register Default
S34 (cont.)
Function
Bit Value Result
2
3
4
5
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.
Bit Value Result
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.
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TECHNICAL QUICK REFERENCE
Register Default Function
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.
Bit Value Result
0
1
Distinctive ring enabled.
1-7
2-128 Reserved
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REGULATORY INFORMATION
received including interference that may cause
undesired operations.
Manufacturer’s Declaration
of Conformity
3Com
Part 68:
7770 North Frontage Road
Skokie, Illinois 60077-2690
U.S.A.
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.
declares that the product U.S. Robotics
Sportster Voice 33600 Internal Faxmodem
conforms to the FCC’s specifications:
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.
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
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138
REGULATORY INFORMATION
IC (Canada)
This equipment uses the following USOC
jacks: RJ-11C.
This digital apparatus does not exceed the
Class B limits for radio noise emissions from
digital apparatus set out in the interference-
causing 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.
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.
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.
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.
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REGULATORY INFORMATION
Connecting to the Telephone Company
Fax Branding
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.
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.)
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.
In order to program this information into your
Sportster modem, refer to the RapidComm
manual on the CD-ROM that shipped with
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REGULATORY INFORMATION
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
· Reorient the receiving antenna (for
televisions with antenna reception only) or
cable input device.
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.
· Relocate the computer with respect to the
receiver.
· Relocate the computer and/or the receiver
so that they are on separate branch circuits.
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:
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,
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REGULATORY INFORMATION
How to Identify and Resolve Radio-
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.
TV Interference Problems
Stock No. 004-000-0345-4
U.S. Government Printing Office
Washington, DC 20402
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
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
situations. Currently, telecommunication
companies do not allow users to connect their
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142
REGULATORY INFORMATION
equipment to jacks except in precise situations
that are spelled out in tariffing arrangements
with those companies.
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.
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.
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:
CAUTION: Do NOT attempt to make such
connections yourself. Instead contact an
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REGULATORY INFORMATION
Keating Technologies
de raccordement. L'abonné ne doit pas oublier
25 Royal Crest Court, Suite 200
Markham, ONT L3R 9X4
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
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
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REGULATORY INFORMATION
ensemble. Cette précaution est
Centre de guarantie et de service après-vente:
particulièrement importante dans les régions
rurales.
Keating Technologies
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.
25 Royal Crest Court, Suite 200
Markham, ONT L3R 9X4
Limited Warranty
U.S. Robotics Access Corp., a subsidiary
of 3Com Corporation, warrants to the
original end-user purchaser that this
«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.»
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,
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145
REGULATORY INFORMATION
tampered with, misused, or subjected to
abnormal working conditions (including, but
not limited to, lightning and water damage).
SPECIAL, INDIRECT, INCIDENTAL,
PUNITIVE, OR CONSEQUENTIAL
DAMAGES OF ANY KIND OR
CHARACTER, INCLUDING,
THIS LIMITED WARRANTY DOES
NOT GUARANTEE YOU
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.
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
This limited warranty gives you specific
legal rights. You may have others, which
vary from state to state.
MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE OR
PURPOSE. U.S. ROBOTICS SHALL IN
NO EVENT BE LIABLE FOR ANY
Some states do not allow limitations on
duration of an implied warranty, or the
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146
REGULATORY INFORMATION
exclusion or limitation of incidental or
consequential damages, so the above
exclusion or limitation may not apply to
you.
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.
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
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147
INDEX
Connections CD-ROM
A
Modem Update Wizard, 53-64
software installation, 33-50
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
D
drivers, modem
installing, 25-32
B
BBS, 3Com, 96-98
E
F
error control
disabling, 92
C
characters per second (cps)
low, errors and, 93-94
COM ports
faxing with RapidComm Voice software, 48-50
flow control, 51
conflicts, 89-90
and Plug and Play installations, 19-20
CompuServe, U.S. Robotics online support
and, 99
FTP, U.S. Robotics online support and, 98
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148
Index
I
O
IRQs, 1, 3-12, 20
conflicts, 89-90
online help resources, 96-100
ISA expansion slots, 14, 22
P
parity, 92
J
jumper pins, 10-12, 20
Plug and Play installation, 19-32
failures, 95
jumper shunts, 10-12, 20
R
RapidComm Voice software
faxing with, 48-50
M
microphone installation, 16, 24
modem installation
installing, 33-50
Plug and Play, 19-32
With Windows 3.x, 3-18
Modem Update Wizard, 53-64
installing, 53-57
troubleshooting, 101
S
serial number, modem, 12, 21
shunts, jumper, 10-12, 20
using, 58-64
speakerphone feature, 16, 24
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149
Index
determining your version, 2
T
World Wide Web (WWW), 3Com online
support and, 96-100
Technical Support Hotline, 99
terminal mode, 96, 99
Terminate and Stay Resident programs, errors
and,
troubleshooting, 89-94
RapidComm Voice software, 101-102
93, 94
X
x2 technology, 2, 53-64
TSR. See Terminate and Stay Resident
programs
U
upgrading/updating modems, 53-64
V
V.17 fax transmissions, errors and, 94
W
Windows 95
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150
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