USRobotics Network Card 33600 User Manual

Winmodem 33600 & x2/56K*  
User’s Manual  
 
Table of Contents  
Introduction  
1
How a Modem Works.............................................. 1  
How Does Your Sportster Winmodem 33600 & x2/56K  
Work ?................................................................... 2  
Other Features ....................................................... 3  
Package Contents................................................... 4  
Installation  
5
Sportster Winmodem 33600 & x2/56K Installation...... 5  
STEP 1: Insert the Modem Into the Computer ...... 6  
STEP 2: Run the Modem’s Installation Program.... 8  
STEP 3: Installing the Communications Software 11  
Changing Country Setup under Windows 95 13  
Using the Modem  
15  
Installation Test..................................................... 15  
Factory Settings............................................... 16  
Resetting the Modem to Factory Settings........... 17  
Remarks on Using the Modem ............................... 18  
Un-Installing the Modem ........................................ 19  
Troubleshooting  
21  
Problems and Solutions ......................................... 21  
If You Are Still Having Problems............................. 31  
 
Voice Functions  
33  
Overview of Voice Functions.................................. 33  
Speakerphone ...................................................... 34  
Implementing Voice Functions ................................ 34  
Voice Applications ............................................ 34  
Application Settings .......................................... 34  
Appendix A – Technical Reference  
37  
Main AT commands............................................... 37  
Appendix B – Technical Specifications  
57  
Sportster Winmodem 33600 & x2/56K  
Specifications ....................................................... 57  
Electrical power.................................................... 58  
CE Mark............................................................... 59  
Electromagnetic Compatibility............................ 59  
Safety ............................................................. 59  
Glossary  
61  
69  
Limited Warranty  
 
Introduction  
How a Modem Works  
A modem is a computer peripheral that allows you to  
communicate with other computers via telephone lines. Because  
ordinary telephone lines cannot carry digital information, a  
modem changes the digital data from your computer into analog  
signals, which can be transmitted much like voice signals. In a  
similar manner, the modem receiving the call then changes the  
analog signals back into digital data that the receiving computer  
can understand. This shift of digital data into analog signals and  
back again allows two computers to “speak” with one another.  
Called modulation/demodulation, this transformation of data and  
signals is how the modem received its name.  
Sportster Winmodem 33600 & x2/56K - User's manual  
1
 
How Does Your Sportster Winmodem  
33600 & x2/56KWork ?  
With your Sportster Winmodem 33600 & x2/56K*, you can move  
beyond the boundaries of your computer — around the world, if  
you’d like. You can fax a graphic to an overseas supplier, update  
files on your computer at work from your computer at home,  
surf the Internet…he list goes on.  
Quickly  
The Sportster 33600 Winmodem Voice modem installed in your  
PC can transmit and receive data as well as transmit and  
receive facsimile documents as follows:  
a) Utilizing new X2 technology the modem can receive up to  
56Kbits per second to enable fast download of web pages  
and images. Contact your local Internet provider to ascertain  
the availabilty of this service. The actual speed achieved will  
depend on your location relative to your ISP and in particuliar  
the method used by your local telephone company to provide  
normal telephone service.  
b) Conforming to international standards the modem will  
transmit and receive data at up to 33.6 Kbit/s dependant on  
the corresponding modem’s capability.  
c) Utilizing the preloaded software in your machine the modem  
will transmit and receive facsimile documents at speeds up to  
14.4 Kbit/s using ITU standard V17 protocol.  
YOUR SPORTSTER WINMODEM 33600 & X2/56K WILL  
NOT OPERATE UNDER THE MS-DOS ENVIRONMENT.  
IT RELIES ON THE WINDOWS OPERATING SYSTEM  
TO FUNCTION.  
Depending on line conditions  
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Sportster Winmodem 33600 & x2/56K - User's manual  
 
Accurately  
Sportster Winmodem 33600 & x2/56K can automatically detect  
and correct errors during a transmission (V.42/MNP 2-4 error  
control.)  
Efficiently  
The Sportster Winmodem 33600 & x2/56K ’s data compression  
feature can pack data down to a fraction of its original size.  
It can also de-compress data compressed by the remote  
modem  
(V.42 bis/MNP 5 data compression.)  
With Windows  
Sportster Winmodem 33600 & x2/56K is designed to operate  
exclusively in the Windows environment with fully-compliant  
Windows software. It will not work in MS-DOS or in an MS-DOS  
shell under Windows.  
WARNING : THE MODEM WILL BE DAMAGED IF YOU USE A  
DIGITAL PHONE LINE.  
Since some homes and most businesses have digital lines,  
before plugging your Sportster Winmodem 33600 & x2/56K into  
a jack you are unsure about, ask the person in charge of the  
phone system if the line is digital.  
Other Features  
Plug and Play  
Plug and Play allows a computer to configure the modem's  
settings automatically. Your computer sets the optimal  
configuration for the modem and your software applications  
automatically adjust to that configuration.  
Once your system sets the configuration, it will use this  
configuration every time you turn on your machine. In order to  
use this feature, you must have either a Plug and Play BIOS or  
Windows 95.  
Sportster Winmodem 33600 & x2/56K - User's manual  
3
 
Speakerphone  
Working with the Sound Card  
The modem fitted in your Pc is equipped with jack sockets for  
speakers and microphone on the rear panel as well as an  
internal connection that goes directly to the sound card (if fitted).  
It is recommended that for higher quality recording and playing  
of messages and playing of audio files, your speakers and  
microphones are connected on the sound card and not directly  
to the jack sockets on the modem. This will enable the sound  
output and record input to be regulated via the mixer control  
panel.  
In the event that you do not have a sound card fitted, powered  
speakers and a microphone can be connected directly to the  
sockets on the modem.  
Personal Voice Mail  
Using this feature, you can send voice greetings and record  
voice messages like a standard answering machine with several  
“voice mailboxes” on one system. You can even access your  
voice messages remotely. Your modem will autodetect incoming  
fax/voice/data calls and provides fax-on-demand services you  
can tailor to your needs.  
Package Contents  
Sportster Winmodem 33600 & x2/56K  
RJ11 phone cord  
User's guide  
Voice mail, fax and data communications  
software for Windows  
4
Sportster Winmodem 33600 & x2/56K - User's manual  
 
Installation  
Sportster Winmodem 33600 &  
x2/56K Installation  
NOTE: Turn the computer and any connected peripheral devices  
off.  
This chapter will walk you through the installation of your  
Sportster Winmodem 33600 & x2/56K. There are two parts to  
the installation: Hardware (the modem) and software. The  
modem must be installed before the software.  
Plug and Play:  
Sportster Winmodem 33600 & x2/56K supports Plug and Play  
installation, the fastest, easiest way to add new features  
to your PC (a modem, a sound card, etc.)  
Sportster Winmodem 33600 & x2/56K - User's manual  
5
 
STEP 1: Insert the Modem Into the Computer  
Inserting the board into the groove.  
Installation Procedure  
1. Turn off and unplug the computer.  
2. Unplug all the peripheral devices (screen, printer,  
etc.).  
3. Remove the computer's cover to have easy access  
to the internal bus connectors.  
4. Choose an unused expansion slot and remove its  
bracket (shaped like a square ruler) located on the  
back panel.  
5. Insert the board into the groove making sure that its  
edge makes contact with the back panel of the  
machine.  
6. Fasten the edge to the computer's panel, replace  
the cover and screws.  
7. Plug in the end of the phone cord that came with  
the modem into the modem's TELCO jack (The  
6
Sportster Winmodem 33600 & x2/56K - User's manual  
 
TELCO jack is accessible through an opening in the  
computer's case.)  
8. Plug the other end of that cord into a wall jack for  
an analog line.  
9. If you want to use a telephone on that line, the  
setup is as follows:  
Plug the telephone's cord into the  
telephone wall jack as shown above.  
10. Plug in the power plug and turn the computer on.  
Sportster Winmodem 33600 & x2/56K - User's manual  
7
 
STEP 2: Run the Modem’s Installation Program  
Sportster Winmodem 33600 & x2/56K comes with an installation  
diskette that contains an installation program that will help your  
computer finish installing the modem. This program will also copy  
modem programs from the diskette onto your computer’s  
hard drive.  
The installation program runs a little differently for Windows 95  
than it does for Windows 3.1 and 3.11. In this section, follow the  
steps for the Windows operating system you have. Skip the  
other set of Windows instructions.  
Running the Installation Program on a Windows 3.1 or  
3.11 System  
After inserting the Sportster Winmodem 33600 & x2/56K by  
following the steps previously described in the STEP 1: Insert  
the Modem Into the Computer section page 6 :  
1. Insert the installation diskette.  
2. Run the a:install program. From Program Manager,  
pull down the File menu and select Run. Enter  
A:INSTALL.EXE if that is the drive you are running  
the installation diskette from.  
3. Follow the screen commands to complete the  
installation program.  
NOTE: At one point you’ll be asked to select a COM port for the  
modem. Choose any port that’s labeled Free. Do not choose a  
port labeled In use. (If you choose an In use port, the device that  
has been using that port will not work.)  
Write the COM port on the first page of this manual. You may  
need to know the number later.  
When you’ve finished the installation program, Windows will  
restart.  
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Sportster Winmodem 33600 & x2/56K - User's manual  
 
At this point, you’ll either:  
Be able to find the Sportster Winmodem 33600 &  
x2/56K group in the Program Manager window: If you  
can find this group, you’re ready to install the  
communications software.  
OR  
If the computer cannot configure the modem  
automatically, you will get a Configuration dialog box.  
You will have to choose an available I/O address and  
an available IRQ. (NOTE: Do not check the Let Plug &  
Play configure… option.)  
For the I/O address: Choose any on the list.  
For the IRQ: The COM port/IRQ combinations  
shown here work with most computer set-ups:  
If you choose  
this COM port:  
Then try  
this IRQ:  
1
2
3
4
4
3
5, 7 or 9  
5, 7 or 9  
If you have a sound card, SCSI card, or game card, it might be  
using IRQ 5 or 7. Do not make 5 or 7 your first choice then,  
because it might not be available.  
If the configuration you’ve chosen works, you should be able to  
find the Sportster Winmodem 33600 & x2/56K group in the  
Program Manager window. If you can find this group, you’re  
ready to install the communications software following the  
directions page 11.  
Sportster Winmodem 33600 & x2/56K - User's manual  
9
 
If the configuration you’ve chosen does not work, you chose an  
I/O address and/or an IRQ that is not available:  
If you chose an unavailable I/O address, you will get an error  
message. Choose another I/O address in the Configuration  
dialog box that appears.  
If you chose an unavailable IRQ, you’ll find out later when your  
communications software program tells you it cannot find the  
modem. At that point choose another IRQ in the Configuration  
dialog box. (You can find it by clicking on the Configuration icon  
in the Sportster Winmodem 33600 & x2/56K group in the  
Program Manager window.)  
Running the Installation Program on a  
Windows 95 System  
After inserting the Sportster Winmodem 33600 & x2/56K by  
following the steps in the STEP 1: Insert the Modem Into the  
Computer section page 6 :  
1. When the screen tells you to, insert the installation  
disk.  
2. Follow the screen commands to complete the  
installation program.  
NOTE: At one point, you’ll be told which COM port the modem  
has been installed on. Write the COM port on the first page of  
this manual. You may need to know the number later.  
When you’ve finished the installation program, a Sportster  
Winmodem 33600 & x2/56K icon will appear in the Control Panel  
window. You’ll then be ready to install the communications  
software. See instructions below.  
10  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
STEP 3: Installing the Communications Software  
You’ll need communications software to get the modem working  
— dialing numbers, downloading files, sending faxes, etc.  
If you’re asked to select your modem type from a  
list, select a high speed Sportster or Courier Dual  
Standard.  
If you cannot select a Sportster or Courier model  
from the list, try:  
1. Typing this “initialization string:” AT&F1  
2. And then pressing the ENTER key.  
If you’re asked for a serial port (baud) rate, set  
the rate for the highest option. (115.200 bps is a  
good choice for most programs.) If you experience  
trouble later (unusually slow transmissions, errors in  
transmissions, etc.), reduce the rate. Do not choose  
28.800 bps, 14.400 bps, or 12.000 bps, however.  
Sportster Winmodem 33600 & x2/56K will not work  
properly at these serial port rates.  
If you have to specify the COM port being used,  
refer to the number you wrote on the first page of this  
manual.  
If you are asked to specify a flow control setting, choose  
RTS/CTS for hardware flow control (highly recommended) or  
XON/XOFF (the &F2 command) for software flow control.  
Disable the type of flow control you are not using.  
Sportster Winmodem 33600 & x2/56K - User's manual  
11  
 
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Sportster Winmodem 33600 & x2/56K - User's manual  
 
Changing Country Setup  
under Windows 95  
When travelling with the Sportster Winmodem PC Card, you may  
need to change the country setup to attain correct operation  
using other telephone networks. These networks may use  
different technical parameters, such as Ring pattern and Voltage  
level.  
Using Windows 95, follow the procedure below for changing to  
the required country setup.  
1. Click Start | Settings | Control Panel from the main  
Windows 95 task bar.  
2. Select (double-click) the ‘Sportster Winmodem PC Card’  
icon.  
3. From within the ‘Properties…’ dialogue box, click the  
Change Country’ button.  
Note: A warning reminds you that selecting another country  
different from the one that actually matches your present  
location may cause the Sportster Winmodem PC Card to  
operate incorrectly.  
Sportster Winmodem 33600 & x2/56K - User's manual  
13  
 
3. Click OK. The ‘Modem: Change Country Setup’ dialogue box  
should appear.  
Note: The upper-half of this window displays the current country  
selected. The lower section displays a series of flags offering  
alternative setup options.  
4. Select the appropriate country flag and Click OK. Click on  
Yes to Save.  
Note: The Sportster Winmodem PC Card will be reconfigured  
automatically.  
To revert back to the original country specification, you must  
repeat the above procedure.  
14  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
Using the Modem  
Installation Test  
Follow this procedure to check that the modem works correctly.  
1. Turn the computer on.  
2. Load and run the communications software.  
Check the software installation manual for further  
information. Do not be alarmed when a DOS-  
based hardware diagnostic tool does not detect  
the presence of your new modem. The new  
architecture of Sportster Winmodem 33600 &  
x2/56K is unknown to many comtest programs and  
DOS-based tools.  
3. In the software, set the serial port rate to 9.600  
bits per second (bps) for a V.22 bis modem,  
19.200 bps for a V.32 bis modem, 57.600 bps for a  
V.34 model, 57.600 bps (115.200 bps if available)  
for a V.34+ model (in some software, this is  
referred to as the 'baud rate’). The modem will  
automatically detect this setting when you send a  
command to it.  
4. Specify the serial communications port used by the  
modem: COM1, COM2 or other.  
5. Set the data format to an 8-bit length with no parity  
or to a 7-bit length with even or odd parity — either  
one will do — and 1 stop bit.  
Sportster Winmodem 33600 & x2/56K - User's manual  
15  
 
6. Execute the function that authorizes sending AT  
commands to the modem; in other words, put the  
computer in terminal mode.  
7. Verify that the computer and the modem can  
communicate with each other by sending the  
following AT command (you can type the  
command either with uppercase or lowercase  
letters, but you must not combine the two  
different types of letters). Press the Enter key  
(carriage return) , indicated in the following example  
by the word Enter surrounded by brackets.  
$7ꢀꢁ(QWHU!  
If everything is OK, the modem will respond with the following  
message:  
2.  
If the command is not echoed back (AT is not displayed on the  
screen), it means that local echo is turned off. In order to turn it  
on, send the following command to the modem :  
$7(ꢂꢀꢁ(QWHU!  
If, on the contrary, the screen displays double characters, it  
means that local echo is turned on both at the modem and in the  
software. Turn the software local echo off, if such an option is  
available, or turn the modem local echo off with the following  
command:  
$7(ꢃꢀꢁ(QWHU!  
Factory Settings  
The modem has been pre-configured at the factory. In most  
cases, it will work properly with these factory settings. However,  
if necessary, you can modify them with the communication  
commands.  
In order to display the present modem settings, do the following:  
1. Run the communications program.  
2. Go into the program's terminal mode.  
3. Type:  
16  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
$7,ꢀꢁꢂ(QWHU!ꢃ  
The modem will respond to this command by displaying a list of  
the configuration settings.  
To modify them, please refer to Appendix A.  
Resetting the Modem to Factory Settings  
Some transmission sessions can modify the modem's  
configurations. If you are unsure of the current configuration of  
the modem or if it seems to be not working correctly, you might  
want to reset it to the factory settings.  
To do this:  
1. Run the communications program.  
2. Go into the program's terminal mode.  
3. Type:  
$7 )ꢄꢂ(QWHU!  
This re-initialization includes resetting the hardware flow control,  
a fixed speed on the communication port and complete result  
codes.  
If you want to set software flow control on (XON/XOFF), type  
the following command instead:  
$7 )ꢅꢂ(QWHU!  
On the other hand, some communications programs let you  
choose the modem in a menu list. If you can't find your modem  
there, you can enter these initialization strings above in the  
settings screen of the application.  
Sportster Winmodem 33600 & x2/56K - User's manual  
17  
 
Remarks on Using the Modem  
Remember the Following Points When Using the  
Modem:  
The modem might not work with all modular  
telephone sets. Specifically, you must not use the  
modem with multi-line telephone sets, sets with  
indicator lights or line selection buttons.  
Some voice mail message systems use a specific  
tone to indicate that a voice message has been  
received. The modem will not be able to dial as long as  
this signal is on the line. Listen to the waiting  
messages in order to get the normal dial tone back  
so that the modem can dial.  
The modem has an automatic speed reduction  
function. This means that it automatically reduces its  
data transmission speed in order to match the speed  
of the remote modem. This also means that it may  
take the modem up to 30 seconds to establish  
communications with a slower modem.  
A comma (,) in the dialed number causes a pause  
during dialing. You can insert multiple commas in the  
command line in order to obtain a longer pause.  
The modem must detect a carrier within a specific  
time interval, otherwise it will display the message ‘NO  
CARRIER’ or ‘NO ANSWER’. You can increase this  
interval (in seconds) by going into the terminal mode of  
the communications application and typing in:  
$7ꢀ6ꢁꢀ ꢀ>YDOXH@ꢂ  
NOTE: This value must be between 1 and 255 seconds (refer to  
the AT command table for further details). The range of  
acceptable values is country-dependent.  
18  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
Un-Installing the Modem  
Un-installing the Sportster Winmodem 33600 & x2/56K requires  
that you:  
Remove the modem from the expansion slot after  
turning off your computer.  
Remove the modem programs from the computer’s  
hard drive after turning your computer back on. You  
should do this with the “uninstall” program, which can  
be found:  
In the Sportster Winmodem 33600 & x2/56K  
group of the Program Manager window in  
Windows 3.1 and 3.11 systems  
In the Sportster Winmodem 33600 & x2/56K  
icon of the Control Panel window in Windows  
95 systems  
It does not matter which of these you do first — removing the  
modem or removing the modem programs — but you must do  
both to completely un-install the modem.  
Sportster Winmodem 33600 & x2/56K - User's manual  
19  
 
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Sportster Winmodem 33600 & x2/56K - User's manual  
 
Troubleshooting  
Problems and Solutions  
If you encounter problems even though you have followed the  
installation and use instructions of the modem, refer to the  
following table that lists the most common failures and their  
solutions.  
Identifying the current problem  
Symptom  
Solution  
The software  
indicates that the  
modem is not  
installed.  
Check the software configuration.  
Make sure that it is configured for the  
appropriate COM port (in most cases it  
should be set to COM2). Check also that  
no other application is using this same  
port. Check also that the modem is  
properly inserted in its casing.  
The modem displays  
double characters on  
the terminal screen.  
Both the modem and the application  
local echoes are turned on.  
To turn local echo off type:  
$7(ꢀꢁꢂ(QWHU!  
Sportster Winmodem 33600 & x2/56K - User's manual  
21  
 
The modem does not  
respond when, in  
Check that the COM port to which the  
modem is connected is properly  
terminal mode, you  
send AT commands.  
declared. Check the IRQ configuration in  
the communications software or in the  
Windows Control Panel. Check that  
the application is in terminal mode.  
If none of the preceeding solutions solve  
the problem, it means that the modem is  
certainly in conflict at the COM port/IRQ  
level. Begin the installation procedure in  
the Installation chapter. If you change  
the COM/IRQ configuration, don't forget  
to make these changes in the application  
as well.  
The modem cannot  
make a call and sends  
the message ‘NO DIAL  
TONE’.  
Check the connection to the telephone  
line. It could be that the modem cannot  
detect the dial tone.  
Try the ATX3DT<phone number> dial  
sequence.  
The modem cannot  
make a call when  
connected to a PBX.  
A pause in dialing may be needed to  
allow time to connect to the outside  
PSTN line. An example of dialing an  
outside line is shown below, where a 9 is  
used to access the outside line and a  
comma causes a pause in the dialing  
sequence.  
$7'ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢉ  
The value of register S8 may be  
adjusted to give the required delay, or  
use a W in place of a comma. The W  
causes the modem to wait for a second  
dial tone before continuing and may  
result in faster dialing.  
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Sportster Winmodem 33600 & x2/56K - User's manual  
 
There is no audible  
tone when you try to  
call.  
The speaker is turned off; reset the  
modem's settings to the factory settings.  
The cables are not correctly connected.  
Check all connections from the  
telephone wall jack to the modem.  
There is a problem with the telephone  
line; check it using a standard telephone  
set.  
You are connected to an incompatible  
telephone network. Refer to the section:  
‘Utilization Notes’ in this manual.  
The modem does not  
respond to incoming  
calls.  
Check that the application's auto-answer  
mode is turned on.  
Some office networks use a low voltage  
call signal that the modem cannot  
recognize. Try connecting the modem to  
a line that is not part of this type of  
network.  
The modem connects  
to the remote modem,  
but the text received  
is illegible.  
Incorrect software configuration. Check  
that the transmission speed, the parity  
and the number of stop bits defined in  
the software correspond to the settings  
of the remote modem. Data compression  
could be used on one of the modems  
and not on the other. Check the flow  
control. If required, reconfigure the  
modem to the factory settings.  
Using a certain  
terminal emulation  
application, the  
modem sends back  
many transmission  
errors.  
Check the way the application initializes  
the modem :  
$7 )ꢂ(QWHU!  
This re-initialization includes resetting  
the hardware flow control.  
If you want to set software flow control  
on (XON/XOFF), type the following  
command instead:  
$7 ) .ꢃꢂ(QWHU!  
Sportster Winmodem 33600 & x2/56K - User's manual  
23  
 
The modem  
connects itself  
Someone probably hung up from another  
extension.  
correctly to the  
remote modem, but  
the connection is  
interrupted during  
communications  
with the message:  
NO CARRIER.  
The modem detected a call waiting signal  
on the line. Contact the local tele-  
communications agency to find out how  
to turn this signal off when you use the  
modem.  
Try calling another modem to check if  
the problem is general or unique to one  
specific modem.  
The telephone line is of low quality; try  
communicating at a lower speed.  
Connection problem  
with a 2400 bps  
modem.  
Some older modem models will not  
connect when the error correction protocol  
is on. Turn this protocol off with the  
following command:  
0,66,1*ꢀ&200$1'  
High speed data  
transmission failed.  
Check if there are any time-share  
applications or programs working in  
parallel to the communications application.  
The quality of the telephone line is too  
low to withstand high-speed data transfer;  
decrease the modem's transmission  
speed.  
International  
connections cannot  
be made.  
Because of the length of the number  
dialed and the differences in telephone  
networks, it may be the case that some  
digits do not get interpreted during the  
dialing process. Insert commas between  
parts of the dialing number in order to  
create pauses.  
For example, if you are calling 123456789,  
insert commas and dial 1,23,456789  
instead.  
Calls to foreign  
countries terminate  
with a ‘NO CARRIER’  
message.  
Increase the amount of time to wait for  
a carrier signal. In terminal mode, type  
ATS7=60 and press the Enter key. The  
range of acceptable values is country-  
dependent.  
24  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
Intercontinental  
connections are  
sometimes  
If the telephone line's quality is low, it is  
best to reduce the transmission speed in  
order to insure that the connection  
remains stable.  
interrupted.  
During file transfer,  
the modem sends  
back many  
transmission errors  
or a very low  
The telephone line is bad, select a lower  
transmission speed.  
Re-initialize the modem to the factory  
settings.  
transfer rate.  
Change the transfer protocol.  
During transmission  
of a fax, errors alter  
its legibility or cut  
off the connection.  
Check the modem's and the software's  
flow control.  
Remove all 'Terminate and stay resident'  
programs (TSRs) that could be active  
during the connection.  
If the problem occurs during the trans-  
mission of a fax from Windows or OS/2  
check that the communications driver that  
you are using is the one corresponding to  
the environment that you use (Windows,  
OS/2), or the one supplied specifically with  
the communications software.  
You get a message  
telling you that the  
modem is conflicting  
with another device.  
With a Windows 3.1 or 3.11 system:  
Click on the Configurator icon in the  
Sportster Winmodem 33600 & x2/56K  
program group to get access to changing  
the setting(s). Try different I/O addresses  
and IRQ lines. If that does not work, you  
may need to free up an I/O address or  
IRQ line.  
With a Windows 95 system:  
1. Click on the Start button.  
2. Scroll to Help.  
3. Click on the Contents tab.  
4. Select Troubleshooting.  
5. Select If you have a hardware conflict.  
6. Follow the screen commands.  
Sportster Winmodem 33600 & x2/56K - User's manual  
25  
 
Before the Modems Connect  
If your modem  
does not respond to  
AT commands.  
Make sure you are in terminal mode.  
(Your communications software should  
let you switch to terminal mode.)  
Check that the modem is set to display  
result codes and that the result codes  
are displayed as words.  
Try going into terminal mode and:  
1. Typing ATE1V1Q0 (the last character is  
zero)  
2. And then pressing the ENTER key  
(See Qn and Vn in the Commands  
chapter.)  
Check that your modem’s Data Terminal  
Ready (DTR) signaling is set correctly.  
(See &Dn in the Commands chapter.)  
You may need to review the manual that  
came with your communication software  
to see what DTR operation your  
software requires. If you are not using  
the communication software that came  
with the Sportster Winmodem 33600 &  
x2/56K , you may need to change the  
DTR setting.Check the manual that  
came with the software.  
If your modem does  
not answer the  
phone or does not  
“go off hook” to  
Review the manual that came with your  
communication software to see what  
Data Terminal Ready (DTR) operations  
are required. (See &Dn in the  
answer the phone.  
Commands chapter of this manual,  
too.) If you are not using the  
communication software that came with  
the modem, you may need to change  
the DTR setting. Check the manual that  
came with the software.  
Try going into terminal mode (your  
communications software should let  
you switch to terminal mode) and:  
1. Typing ATX3DT as the dial string  
2. And then pressing the ENTER key  
(For answering:) Make sure your  
software has “auto answer” enabled.  
26  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
If your PC reacts as  
though you are  
online, but no call  
has been initiated or  
received.  
Check that modem’s Carrier Detect  
(CD) signaling is set correctly. (See  
&Cn in the Commands chapter.) You  
may need to review the manual that  
came with your communication  
software to see what CD operation your  
software requires. If you are not using  
the communication software that came  
with the modem, you may need to  
change the CD setting. Check the  
manual that came with the software.  
If double characters  
are displayed on  
your screen  
Both your modem and your  
communications software’s local echo  
features are on. Turn one off by going  
into terminal mode (your  
(Example: AATT).  
communications software should let  
you switch to terminal mode) and:  
1. Typing ATE0 (the last character is zero)  
2. And then pressing the ENTER key  
If both modems  
exchange carrier  
signals but fail to  
establish a data  
communications  
link.  
Place the call again. You may have had  
a bad phone line or a bad connection.  
The telephone company routes all  
calls, even local calls, differently each  
time you call.  
Call a different modem to see if the  
problem persists.  
The remote modem might be an older  
2400 bps modem that does not support  
error control. Disable error control by  
going into terminal mode (your  
communications software should let  
you switch to terminal mode) and:  
1. Typing AT&M0 (the last character is  
zero)  
2. And then pressing the ENTER key.  
3. Typing ATDT followed by the telephone  
number  
4. And then pressing the ENTER key.  
Sportster Winmodem 33600 & x2/56K - User's manual  
27  
 
If both modems  
exchange carrier  
signals but fail to  
establish a data  
communications  
link. (cont.)  
When the call is finished, reset the  
modem by:  
1. Typing ATZ  
2. And then pressing the ENTER key.  
Make sure you’ve set your software to the  
same data format (word length, parity, and  
number of stop bits) required by the  
modem you’re trying to connect with and,  
if your modem is dialing out, that your  
software is set to a baud rate equal to or  
higher than that of the other modem.  
NOTE: Using a data format different  
from the other modem’s can alter data.  
If you cannot call to find out the other  
modem’s data format, trying the  
following data formats in this order:  
8-None-1, 7-Even-1, 7-Odd-1, and 7-  
Mark-1.  
Make sure your modem’s connection  
rate isn’t locked. The default of &N0 (the  
last character is zero), the variable  
connection rate, lets the two modems  
negotiate the best possible connection  
rate. (See &Nn in the Commands  
chapter.)  
Make sure the modem is in the right  
mode for what you’re trying to do:  
Data mode for a data call.  
Fax mode for a fax call.  
28  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
During Data Transfers  
If your screen  
displays random or  
garbage characters.  
Make sure your communications port is  
set to connect at the maximum possible  
connect rate.  
Set your software to the same word  
length, parity, and stop bits as the  
remote modem.  
Peripherals (drivers for hardware and  
software) may be interfering with the  
transmission. Try disabling the  
extensions before you run your  
communications software.  
The flow control settings for your  
software and modem may be different.  
Check to see that your software and  
the modem are set for the same kind of  
flow control, either hardware or  
software (hardware is recommended).  
Some communications programs also  
require that you disable the kind of flow  
control you are not using.  
Load the template that enables  
hardware flow control as well as other  
optimal settings. Go into terminal mode  
(your communications software should  
let you switch to terminal mode) and:  
1. Type AT&F1  
2. And then press the ENTER key.  
If the settings are the same, the  
problem may be with the phone line.  
Sportster Winmodem 33600 & x2/56K - User's manual  
29  
 
If your communi-  
cations software is  
reporting many  
Cyclic Redundancy  
Check (CRC) errors  
and low Characters  
Per Second (CPS).  
Place the call again. You may have had  
a bad phone line or a bad connection.  
The telephone company routes all  
calls, even local calls, differently each  
time you call.  
Load the template that enables  
hardware flow control as well as other  
optimal settings. Go into terminal mode  
(your communications software should  
let you switch to terminal mode) and:  
1. Type AT&F1  
2. And then press the ENTER key.  
Try the Zmodem file transfer protocol. If  
that does not work, try Ymodem. (Only  
use Xmodem as a last resort.)  
During Fax Transmissions  
If errors are  
Type this initialization string in your  
occurring in your  
V.17 (14.4) fax  
transmissions  
software initialization string screen:  
$7 +ꢀ ,ꢁ 5ꢁ6ꢂ ꢃꢄ  
(last character is zero)  
30  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
If You Are Still Having Problems  
Re-read this manual, especially the Remarks on  
Using the Modem section.  
Contact your reseller who will be able to provide you  
with the necessary assistance. This is much more  
efficient and less costly than sending the modem back  
to us for a problem that is possibly only a simple  
matter of adjusting the settings.  
If your reseller can't help you, contact your PC  
Company 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, the contents of your ATI7 screen.  
Sportster Winmodem 33600 & x2/56K - User's manual  
31  
 
32  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
Voice Functions  
Overview of Voice Functions  
A voice modem has the capability of being able to transform  
analog sound data — such as voices — into digital data that are  
compatible with computers. This digitization operation is called  
sampling. Once the data is in digitized form, it can be stored on  
the computer's hard disk in files and be converted and  
processed by specific applications. On the other hand, this  
digitized data can be re-transmitted to the voice modem which  
reconstructs the original sounds from it.  
If most messages transit over the telephone line, the modem  
user can use, according to the available equipment :  
a telephone set  
a sound card connected to a microphone and  
speaker, to record and listen to messages  
the built-in speakerphone feature, allowing hand free  
communication  
Please refer to the Installation section page 5 for instructions on  
how to set up your modem for voice functions.  
These capabilities, coupled with the power of specific computer  
applications, can be used for the PC to simulate either an  
answering machine, voice mail or any other communications  
application that processes voice data.  
Sportster Winmodem 33600 & x2/56K - User's manual  
33  
 
Speakerphone  
The full duplex SpeakerPhone feature of the modem is  
accessible by connecting an external speaker to the jack on  
modem backpanel and a microphone.  
NOTE: Make sure that the microphone and speaker are at least  
30 centimeters apart and not directly facing each other, so as to  
avoid acoustical coupling between the speaker output and  
microphone input.  
Implementing Voice Functions  
Voice Applications  
To use the voice functions of the modem, you must use  
an application designed for this type of modem. The answering  
machine, voice mail, differentiating Data – Fax – Voice calls and  
recognition of remote telephone tones (DTMF) are the main  
functions used by voice applications.  
Application Settings  
In the section corresponding to the modem settings in the voice  
application, choose the exact modem type in the list of modems  
displayed.  
If the modem is not included in the list, you can:  
1. Try a modem containing words such as ‘Generic’ or  
‘voice modem’.  
2. Contact the software manufacturer to ask for  
advice on choosing the driver; be sure to mention  
that your voice modem recognizes AT #V type  
commands.  
3. Contact your modem reseller.  
34  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
In the following paragraphs, you will find some indications  
pertaining to the settings of voice applications in order to use the  
modem.  
Input/Output Source Selection  
Set the recording or playback sources as the devices from which  
you are going to record the local message and listen to the  
received messages. (External powered speakers, microphone,  
headset or sound card)  
Recording and Playback Quality  
The greater the sampling rate, the better the quality of the  
message is. This also means also that the message file size on  
the disk will be greater. For example, 10 seconds recorded on 2  
bits equals about 18 kbytes, whereas a message with twice the  
quality (4 bits) will require, for 10 seconds, about 36 kbytes.  
Level and Length of Silence  
Aside from the various adjustments to recording or playback  
levels, there are usually two of them that relate to the silence.  
These settings are used, one to set the 'minimum noise' level on  
the line that the modem can consider as silent, the other the  
maximum length of silence before going on hook.  
Sportster Winmodem 33600 & x2/56K - User's manual  
35  
 
36  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
Appendix A – Technical  
Reference  
Main AT commands  
1. Type the commands entirely in upper case or lower  
case but do not type commands using a  
combination of the two cases.  
2. All commands, with the exception of A/ and +++,  
are preceeded by the AT prefix and are executed  
after pressing the Enter/ Carriage Return key  
(<Enter>).  
3. The maximum length of a command is 40  
characters. The modem does not count the AT  
prefix character, the Enter key or spaces. On the  
other hand, it does count punctuation marks such  
as dashes and parentheses.  
4. Any missing numeric parameter is considered to be  
equal to zero, for instance the disconnect  
command: ATH <Enter>, is equivalent to ATH0  
<Enter>.  
Sportster Winmodem 33600 & x2/56K - User's manual  
37  
 
Basic Command Set  
AT  
Required command prefix, except with A/ and +++.  
Use alone to test for OK result code.  
$
Displays a basic command list; online help.  
A/  
Re-executes the last issued command.  
Used mainly to redial.  
This does not require the AT prefix or a Carriage  
Return.  
+++  
&$  
Escapes to online-command mode.  
Displays a list of ampersand (&) commands.  
Any key Aborts off-hook dial/answer operation and hangs up.  
A
Manual Answer: goes off hook in answer mode.  
Pressing any key aborts the operation.  
Bn U.S./ITU-T answer sequence.  
B0 ITU-T answer sequence.  
B1 U.S. answer tone.  
Dn Dials the specified phone number.  
Includes any of the following.  
P
T
,
;
Pulse (rotary) dial.  
Tone dial.  
(Comma) Two-second pause; linked to S-8 register  
(Semicolon) Return to Command mode after dialing.  
Dials the letters that follow (in an alphabetical phone  
number).  
/
Delays for 125 msec. before proceeding with dial  
string.  
W
@
R
Wait for second dial tone (X3 or higher); linked to S6  
register.  
Dials, waits for quiet answer, and continues (X3 or  
higher).  
Originates call using answer (reverse) frequencies.  
DL  
Dials the last-dialed number.  
DSn  
Dials the phone number string stored in NVRAM at  
position n (n = 03).  
Phone numbers are stored with the &Zn=s command.  
D$  
Displays a list of Dial commands.  
En Sets local echo.  
38  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
E0 Echo OFF.  
E1 Modem displays keyboard commands.  
Sportster Winmodem 33600 & x2/56K - User's manual  
39  
 
Fn Sets online local echo of transmitted data ON/OFF.  
F0 Local echo ON. Modem sends a copy of data it sends  
to the remote system to your screen.  
F1 Local echo OFF.  
Receiving system may send a remote echo of data it  
receives.  
Hn Controls ON/OFF hook.  
H0 Hangs up (goes on hook)  
H1 Goes off hook.  
In Displays the following information.  
I0 Four-digit product code.  
I1 Results of ROM checksum.  
I2 Results of RAM checksum.  
I3 Product type.  
I4 Current modem settings.  
I5 Nonvolatile memory (NVRAM) settings.  
I6 Link diagnostics.  
I7 Product configuration.  
I8 Returns the blacklisted phone numbers.  
Ln Controls speaker volume (internals only).  
L0 Low.  
L1 Low.  
L2 Medium.  
L3 High.  
Mn Operates speaker.  
M0 Speaker always OFF.  
M1 Speaker ON until CONNECT.  
M2 Speaker always ON.  
M3 Speaker ON after dial, until CONNECT.  
On Returns online.  
O0 Returns online.  
O1 Returns online and retrains.  
P
Sets pulse dial (for phone lines that don’t support  
touchtone dialing).  
Qn Displays/suppresses result codes.  
Q0 Displays result codes.  
Q1 Quiet mode; no result codes.  
Q2 Displays result codes only in Originate mode  
Sr.b=n Sets bit .b of register r to n (0/OFF or 1/ON).  
40  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
Sr=n  
Sets register r to n.  
(See list of S-register settings on the next section).  
Sr?  
S$  
Displays contents of S-register r.  
Displays a list of the S-Registers.  
(See list of S-register settings on the next section).  
Sets tone dial.  
T
Vn Displays verbal/numeric result codes.  
V0 Numeric codes.  
V1 Verbal codes.  
Xn Sets result code displayed. Default is X4.  
Sportster Winmodem 33600 & x2/56K - User's manual  
41  
 
Xn Setting  
Result Codes  
X0  
X1  
X2  
X3  
X4  
X5  
0/OK  
1/CONNECT  
2/RING  
3/NO CARRIER  
4/ERROR  
5/CONNECT 1200  
6/NO DIAL TONE  
7/BUSY  
8/NO ANSWER*  
10/CONNECT 2400  
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  
Functions  
Adaptative Dialing  
Wait for 2nd dial tone (W)  
Wait for answer (@)  
Fast Dial  
*Requires @ in dial string; replaces NO CARRIER  
42  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
Yn Selects power-on/reset default configuration.  
Y0 Default is profile 0 setting in NVRAM.  
Y1 Default is profile 1 setting in NVRAM.  
Z
Resets modem based on factory settings.  
Z0 Resets modem to NVRAM profile selected by Y  
command.  
Z1 Resets modem to NVRAM profile 0.  
Z2 Resets modem to NVRAM profile 1.  
Z3 Resets modem to factory default profile 0 (&F0).  
Z4 Resets modem to factory default profile 1 (&F1).  
Z5 Resets modem to factory default profile 2 (&F2).  
Advanced Command Set  
&An  
Enables/disables ARQ codes.  
&A0  
&A1  
&A2  
&A3  
ARQ result codes disabled.  
ARQ result codes enabled.  
V.32 modulation indicator added.  
Protocol indicators addedLAPM/MNP/NONE  
(error control) and V42BIS/MNP5 (data  
compression).  
&Bn  
Sets modem’s serial port rate.  
&B0  
&B1  
&B2  
Variable, follows connection rate.  
Fixed serial port rate.  
Fixed in ARQ mode, variable in non-ARQ  
mode.  
&Cn  
&Dn  
Controls Carrier Detect (CD) signal.  
&C0  
&C1  
CD override.  
Normal CD operations.  
Controls Data Terminal Ready (DTR) operations.  
&D0  
&D1  
&D2  
&D3  
DTR override.  
DTR toggle causes online Command mode.  
Normal DTR operations.  
Resets on receipt of DTR.  
&Fn  
Loads a read-only (non-programmable) factory  
configuration.  
&F0  
&F1  
&F2  
Generic template.  
Hardware flow control template.  
Software flow control template.  
Sportster Winmodem 33600 & x2/56K - User's manual  
43  
 
&Gn  
Sets Guard Tone.  
&G0  
&G1  
No guard tone, U.S. and Canada.  
550 Hz guard tone, some European  
countries, requires B0 setting.  
1800 Hz guard tone, U.K., requires B0  
setting.  
&G2  
&Hn  
&In  
Sets Transmit Data(TD) flow control.  
&H0  
&H1  
&H2  
&H3  
Flow control disabled.  
Hardware flow control, Clear to Send (CTS).  
Software flow control, XON/XOFF.  
Hardware and software control.  
Sets Receive Data (RD) software flow control  
(see also &Rn).  
&I0  
&I1  
Software flow control disabled.  
XON/XOFF signals to your modem and  
remote system.  
&I2  
XON/XOFF signals to your modem only.  
&Kn  
&Mn  
Enables/disables data compression.  
&K0  
&K1  
&K2  
&K3  
Data compression disabled.  
Auto enable/disable.  
Data compression enabled.  
MNP5 compression disabled.  
Sets Error Control (ARQ) 1200 bps and higher.  
&M0  
&M1  
&M2  
&M3  
&M4  
&M5  
Normal mode, error control disabled.  
Reserved.  
Reserved.  
Reserved.  
Normal/ARQ.  
ARQ mode.  
&Nn  
Sets forced connect speed. If connection cannot be  
established at this speed, the modem will hang up.  
&N0  
&N1  
&N2  
&N3  
&N4  
&N5  
&N6  
&N7  
&N8  
Variable rate.  
300 bps.  
1200 bps.  
2400 bps.  
4800 bps.  
7200 bps.  
9600 bps.  
12.000 bps.  
14.400 bps.  
44  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
&N9  
16.800 bps.  
19.200 bps.  
21.600 bps.  
24.000 bps.  
26.400 bps.  
28.800 bps.  
31.200 bps.  
33.600 bps.  
&N10  
&N11  
&N12  
&N13  
&N14  
&N15  
&N16  
&Pn  
&Rn  
Sets pulse (rotary) dial make/break ratio.  
&P0  
&P1  
U.S./Canada ratio, 39%/61%.  
U. K. ratio, 33%/67%.  
Sets Receive Data (RD) hardware flow control,  
Request to Send (RTS) (see also &In).  
&R1  
&R2  
Modem ignores RTS.  
Received Data to computer only on RTS.  
&Sn  
&Tn  
Controls Data Set Ready (DSR) operations.  
&S0  
&S1  
DSR override; always ON.  
Modem controls DSR.  
Begins test modes.  
&T0  
&T1  
&T2  
&T3  
&T4  
&T5  
&T6  
&T7  
Ends testing.  
Analog Loopback.  
Reserved.  
Local Digital Loopback.  
Enables Remote Digital Loopback.  
Prohibits Remote Digital Loopback.  
Initiates Remote Digital Loopback.  
Remote Digital with self test and error  
detector.  
&T8  
Analog Loopback with self test and error  
detector.  
&Wn  
&Yn  
Writes current configuration to NVRAM templates.  
&W0  
&W1  
Modifies the NVRAM 0 template (Y0).  
Modifies the NVRAM 1 template (Y1).  
Sets break handling.  
&Y0  
&Y1  
&Y2  
&Y3  
Destructive, but doesn’t send break.  
Destructive, expedited.  
Nondestructive, expedited.  
Nondestructive, unexpedited.  
Sportster Winmodem 33600 & x2/56K - User's manual  
45  
 
&Zn=s Writes phone number string s to NVRAM at  
position n (n = 03).  
&Zn=L Writes last executed dial string to NVRAM at  
position n (n = 03).  
&Zn?  
&ZL?  
Displays the phone number stored at position  
n (n = 03).  
Displays the last executed dial string.  
S-Registers  
Default values are appropriate for most users.  
The settings are modified with the ATSr=n command,  
where r is the number of the S register and n is a  
decimal value between 0 and 255 (unless otherwise  
stated).  
Use ATSr? to examine the configuration of a  
register. For example:  
$76ꢀ"ꢁ(QWHU  
Reg Default  
Function  
S0  
S1  
S2  
0
Sets the number of rings on which to answer  
in Auto Answer Mode. When set to 0, Auto  
Answer is disabled.  
0
Counts and stores the number of rings from  
an incoming call. (S0 must be greater than  
0).  
43  
Stores the ASCII decimal code for the es-  
cape code character. Default character is +.  
A value of 128 – 255 disables the escape  
code. The range of acceptable values is  
country-dependent.  
S3  
S4  
S5  
13  
10  
8
Stores the ASCII code for the Carriage  
Return character. Valid range is 0–127.  
Stores the ASCII decimal code for the Line  
Feed character. Valid range is 0–127.  
Stores the ASCII decimal code for the Back-  
space character. A value of 128255 disables  
the Backspace key’s delete function.  
46  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
S6  
S7  
!
Sets the number of seconds the modem  
waits before dialing. If Xn is set to X2 or X4,  
the modem ignores this register and dials as  
soon as it detects a dial tone (fast dials). The  
range of acceptable values is country-  
dependent.  
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 sig-  
nal.  
S10  
7
Sets the duration, in tenths of a second, that  
the modem waits after loss of carrier before  
hanging up. This guard time allows the  
modem to distinguish between a line hit, or  
other disturbances that momentarily break  
the connection, 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. A better alternative is to ask  
your phone company how to temporarily  
disable call waiting (usually *70W). For  
example: ATDT *70W phonenumber.  
NOTE: If you set S10 = 255, the modem will not hang up when  
carrier is lost. Dropping DTR hangs up the modem. This  
possibility is country-dependent.  
S11  
!
Sets the duration and spacing, in milli-  
seconds, for tone dialing. The range of  
acceptable values is country-dependent.  
Sportster Winmodem 33600 & x2/56K - User's manual  
47  
 
S12  
50  
Sets the duration, in fiftieths of a second, of  
the guard time for the escape code  
sequence (+++).  
48  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
Reg Default  
S13  
Function  
0
Bit-mapped register. Select the bit(s) you  
want on and set S13 to the total of the val-  
ues 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
1
2
Reset when DTR drops.  
Reset non-MNP transmit buffer  
from 1.5K to 128 bytes.♦  
Set backspace key to delete.  
On DTR signal, auto dial the  
number stored in NVRAM at  
position 0.  
2
3
4
8
4
16  
At power on/reset, Auto Dial the  
number stored in NVRAM at  
position 0.  
5
6
7
32  
64  
Reserved.  
Reserved.  
128 Disconnect on escape code.  
♦♦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.  
S14  
0
Bit-mapped register. Allowable non-default  
value is 1.  
Bit Value Result  
0
1
The modem hangs up on receipt  
of +++, returns to command  
mode, and sends the NO  
CARRIER result code.  
Reserved.  
1–7  
Sportster Winmodem 33600 & x2/56K - User's manual  
49  
 
Reg Default  
S15 0  
Function  
Bit-mapped register. To set the register see  
the instructions for S13.  
Bit Value Result  
0 (zero)1  
Disable ARQ/MNP for V.22.  
Disable ARQ/MNP for .22bis.  
Disable ARQ/MNP for  
V.32/V.32bis/V.32terbo.  
Disable MNP handshake.  
Disable MNP level 4.  
1
2
2
4
3
4
5
6
7
8
16  
32  
64  
Disable MNP level 3.  
MNP incompatibility.  
136 Disable V.42 detection phase.  
S16  
0
Bit-mapped test register. Allowable value is  
2.  
Bit Value Result  
0
Reserved.  
1
2–7  
2
Touch tone dialing test.  
Reserved.  
S17  
S18  
0
0
Reserved.  
Test timer for &Tn 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.  
S19  
0
Sets the duration, in minutes, for the Inac-  
tivity Timer. The timer activates when there is  
no data activity on the phone line; at timeout  
the modem hangs up. S19 = 0 disables the  
timer.  
S20  
S21  
0
Reserved.  
10  
Sets the length, in 10-millisecond units, of  
breaks sent from the modem to the compu-  
ter; applies to ARQ mode only.  
S22  
50  
17  
Stores the ASCII decimal code for the XON  
character. Valid range is 0–127.  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
S23  
S24  
19  
0
Stores the ASCII decimal code for the XOFF  
character. Valid range is 0–127.  
Reserved.  
Reg Default  
Function  
S25  
5
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.).  
S26  
S27  
0
1
Reserved.  
Bit-mapped register. To set the register see  
the instructions for S13.  
Bit Value Result  
0
1
Enables ITU-T V.21 modulation  
at 300 bps for overseas calls; in  
V.21 mode, the modem  
both overseas and domestic  
(U.S. and Canada) calls, but  
originates V.21 calls.  
answers  
only  
1
2
Enables unencoded (non-trellis  
coded) modulation in V.32  
rarely used part of ITU-T  
Recommendation V.32.  
Disables V.32 modulation.  
Disables 2100 Hz answer tone  
allow two V.42 modems to  
connect more quickly.  
mode;  
2
3
to  
4
8
4
5
6
7
16  
32  
64  
See next page.  
See next page.  
Reserved.  
128 This setting disables the codes  
and displays the 9600 code  
instead. The actual rate of the  
can be viewed on the ATI6  
screen. Used for unusual  
call  
Sportster Winmodem 33600 & x2/56K - User's manual  
51  
 
software incompatibilities.  
software may not accept 7200,  
12000 and 14400 bps result  
codes.  
Some  
52  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
Bit 4 Bit 5 Result  
0
0
Complete handshaking  
sequence: V.42 Detection,  
error control, MNP.  
LAPM  
16  
0
0
32  
Disable MNP.  
Disable V.42 Detection and  
LAPM.  
16 32  
tiates  
tion phase.  
remote  
does not  
phase.  
Combined value of 48 nego-  
LAPM without Detec-  
Choose this value if the  
modem uses LAPM but  
support the Detection  
Reg Default  
S28  
Function  
(Sets the V.32 handshaking time [allowable range of  
0–25.4 seconds].)  
0 (zero) Eliminates the V.32 answer tones for a faster  
connection.  
8
Default time (all times are in tenths of  
seconds).  
255  
Disables all connections except V.32 at 9600  
bps.  
S29  
20  
Sets the duration, in tenths of a second, of  
the V.21 answer mode fallback timer.  
S30  
S31  
S32  
0
Reserved.  
Reserved.  
128  
2
Bit mapped register setup for the 28.8 speed  
modems only. To set the register, see the  
instructions for S13.  
Bit Value Result  
0 (zero)1  
V.8 Call Indicate enabled.  
Enables V.8 mode.  
Reserved  
Disable V.34 modulation.  
Disable 33.6 kbps support.  
Reserved  
1
2
3
4
5
6
2
4
8
16  
32  
64  
Reserved  
Sportster Winmodem 33600 & x2/56K - User's manual  
53  
 
7
128 Reserved  
Reg Default  
S33  
Function  
0
Bit mapped register setup for the 28.8 speed  
modems only. To set the register, see the  
instructions for S13.  
Bit Value Result  
0 (zero)1  
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.  
1
2
3
4
5
6
7
2
4
8
16  
32  
64  
128 Disable shaping.  
S34  
0 (zero) Bit mapped register setup. To set registers,  
see instructions for S13.  
Bit Value Result  
0 (zero)1  
Disable 8S-2D trellis encoding  
Disable 16S-4D trellis encoding  
Disable 32S-2D trellis encoding.  
Disable 64S-4D trellis encoding.  
Disable non-linear coding.  
1
2
3
4
5
6
7
2
4
8
16  
32  
64  
Disable TX level deviation.  
Disable Pre-emphasis.  
128 Disable Pre-coding.  
S35-  
S37  
Reserved.  
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.  
Default 0: the modem immediately hangs up  
when DTR drops.  
54  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
This option only applies to connections  
terminated by dropping DTR. If the modem  
receives the ATH command, it ignores S38  
and immediately hangs up.  
Sportster Winmodem 33600 & x2/56K - User's manual  
55  
 
56  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
Appendix B – Technical  
Specifications  
Sportster Winmodem 33600 &  
x2/56K  
Specifications  
Compatibility  
Data: ITU-T V.34, V.FC, ITU-T V.32 bis,  
V.23, V.22 bis, V.22, V.21 and Bell  
212A, 103.  
Fax: Send and receive Group III Fax,  
Class 1, Class 2.0; ITU-T V.17, V.29,  
V.27 ter  
Speeds  
Data: 33.6K, 31.2K (V.34+), 28.8K, 26.4K,  
24K, 21.6K, 19.2K, 16.8K, 14.4K, 12K,  
9600, 7200, 4800, 2400, 1200,  
1200/75, 75/1200, 300 bps  
Fax: 14.4K, 12K, 9600, 7200, 4800, 2400  
ITU-T V.42, MNP 2-4  
ITU-T V.42 bis, MNP level 5  
Full/Half duplex on 2 wire telephone line  
Serial, binary, asynchronous  
Compatible with the AT command set; Fax  
mode: EIA 578 Class 1, EIA 592 Class 2.0  
XON/XOFF, RTS/CTS  
Error correction  
Data compression  
Operation  
Format (DTE-DCE)  
Command set  
Flow control  
Telephone interface RJ11  
Voice coding  
IMA ADPCM  
Tone detection  
Call differentiation  
DTMF  
Toggle between voice, fax and data  
according to the country  
Sportster Winmodem 33600 & x2/56K - User's manual  
57  
 
Silence detect  
Dialing  
Adjustable level and duration  
Pulse (pulses 0-9), tone  
(DTMF 0-9, #, *)  
Call status  
Dial tone, busy tone, voice detect  
Configuration storage Two modem configurations and four  
telephone numbers  
Transmission level  
Country specific  
Reception sensitivity Country specific  
Operating temperature  
From 0 to 50 °C  
Storage temperature From -40 to +70 °C  
Transportation  
temperature  
From -40 to +70 °C  
Operating humidity  
Storage humidity  
Operating altitude  
From 20 to 80% without condensation  
From 5 to 90% without condensation  
3000 meters  
Electrical power  
Before making connections, check the safety levels on  
the various interfaces:  
Telephone line connector = TNV  
These indications are classified as per security standard EN 60-  
950/A2 10/93.  
SELV: Very Low Safety Voltage  
TNV: Telecommunications Network Voltage,  
voltages in compliance with standard EN 41003 08/93  
criteria.  
58  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
CE Mark  
Electromagnetic Compatibility  
This device complies with the following standards in accordance  
with the European Directives 91/263/CEE.  
Immunity EN 50082-1 06/92  
Emission EN 55022 class B 08/87  
Safety  
This device complies with the following standard in accordance  
with the European Directives 91/263/CEE: EN 60950/A2 10/93  
Sportster Winmodem 33600 & x2/56K - User's manual  
59  
 
60  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
Glossary  
Analog signals  
Variable and continuous waves, such as voice tones carried by  
telephone lines. Compare with digital signals.  
ARQ  
General term qualifying error correction protocols that detect  
errors and automatically re-transmit the incorrect data blocks.  
See MNP and V.42.  
ASCII  
Acronym for American Standard Code for Information  
Interchange. 7 bit binary code (0 and 1) used to represent  
letters, numbers and special characters such as $,! and /.  
Asynchronous transmission  
Data transmission during which the time between transmission of  
characters can vary. Since the time delays between characters  
are not uniform, the receiving modem must be signaled when the  
start and end of a characters data bits occur. Stop and start bits  
are therefore added to each character transmitted.  
Baud rate  
Number of state transitions per second on a communications  
channel. Even though it is incorrect from a strictly technical point  
of view, the baud rate is often used to indicate the transmission  
rate.  
Sportster Winmodem 33600 & x2/56K - User's manual  
61  
 
Bit  
A 0 or a 1 reflecting the use of a binary numbering system (a  
system that consists of 2 values). This system is used because  
the computer only recognizes two states, off or on.  
(Start/Stop bits) Signaling bits attached to a character before it  
is transmitted; used for asynchronous transmissions.  
Bits  
(Start/Stop bits) Signaling bits attached to a character before it  
is transmitted; used for asynchronous transmissions.  
Bps  
The rate in bits per second. Thousands of bits per second are  
expressed as kilobits.  
Buffer  
An area of memory used as temporary storage during  
input/output operations. The modem has, for example,  
a command buffer.  
Carrier  
Continuous frequency that can be modulated or act as a support  
to another data carrier signal. Carrier waves are generated and  
maintained by modems via the telephone companies'  
transmission lines.  
Cps  
Data transfer rate (Characters per second). It is generally  
estimated from the binary rate and the length of characters. For  
example, at 2400 bits/s, 8-bit characters with a start and stop  
bit (for a total of 10 bits per character) are transmitted at an  
approximate rate of 240 characters per second (cps). Some  
protocols, such as the error correction protocols in the modem  
use advanced techniques requiring longer transmission frames  
and data compression to increase the number of characters per  
second.  
62  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
Data mode  
Mode in which the fax/modem can send and receive data files.  
A standard modem without facsimile capabilities is always in  
data mode.  
DCE  
(Data Carrier Equipment) Termination equipment of the data  
circuit. In this manual, this term applies to modems that establish  
and control the data link on the telephone network.  
Digital signals  
Discreet and uniform signals. In this manual, the term refers to  
bits 0 and 1.  
DTE  
(Data Terminal Equipment) Data processing terminal equipment.  
Generally, a computer or terminal generates data or is the final  
destination of data.  
Duplex  
Defines a communications channel capable of transmitting  
signals in both directions (half duplex or full duplex).  
Full duplex: Simultaneous flow of signals in two directions. In  
micro-computer communications, full duplex can refer to  
suppressing the local echo of transmitted characters..  
Half Duplex: Signal flow in two directions, but only in one at a  
given time. In micro-computer communications, half duplex can  
refer to enabling of the local echo that causes the modem or the  
software to send a copy of transmitted data to the screen of the  
transmitting computer.  
Error correction  
Various techniques that check the reliability of the characters or  
data blocks. The V.42 and MNP2-2, 10 error correction  
protocols use error detection (using a CRC type control code)  
and re-transmit erroneous frames (ARQ).  
Sportster Winmodem 33600 & x2/56K - User's manual  
63  
 
Fallback  
(Rate adjustment). A function that lets rapid modems with error  
correction control the line quality and fall back to a lower speed  
if it becomes degraded. Modems go back to a higher speed if  
the line quality improves.  
Fax mode  
Mode in which the fax/modem can transmit and receive  
facsimiles.  
Flow control  
A method that compensates for differences in the data flow  
coming in to and going out from a modem or other device. See  
RTS/CTS and XON/XOFF  
IRQ  
Interrupt Request. In a computer, IRQs are used to temporarily  
interrupt current processing when an event requires immediate  
attention, such as for example, the arrival of data at the serial  
port.  
LAPM  
Link Access Procedure for Modems. Error correction protocol  
incorporated in the ITU-T V.42 recommendation. Just like the  
MNP protocols, LAPM uses cyclical redundancy check (CRC)  
and automatic re-transmission of data (ARQ) to guarantee data  
reliability.  
Local Echo  
A function of the modem used to display keyboard command  
and transmitted data on the screen. This function is provided  
with most communications software.  
MNP  
Microcom Networking Protocol. Error correction protocol  
developed by Microcom, Inc. and now in the public domain. MNP  
protocol guarantees error-free transmissions using error  
detection (CRC) and re-transmission of incorrect data frames.  
64  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
The modem uses MNP 2-4 and MNP 5 error correction and data  
compression techniques that are incorporated in  
recommendation ITU-T V.42.  
NVRAM  
Non Volatile Random Access Memory which can be  
programmed by the user with data that are stored when the  
modem is powered down. The modem includes this kind of  
memory to store a default configuration defined by the user and  
loaded into random access memory (RAM) upon power up.  
Parity  
Error detection method that checks the correctness of  
transmitted characters. Verification of characters has  
been replaced by more reliable and efficient block  
control methods, including Xmodem types of protocols and the  
ARQ protocol implemented in the modem. Two communicating  
computers must use the same kind of parity.  
Protocol  
Set of rules and procedures describing communications between  
different devices. Protocols vary, but communications equipment  
must use the same protocol in order to exchange data. Data  
formats, the ready to receive or transmit states, error detection  
and correction are some of the operations that can be defined in  
protocols.  
Remote Echo  
A copy of the data received by the remote system is sent back  
to the transmitting system and displayed on the screen. Remote  
echo is a function of the remote system and is often used in full  
duplex transmissions.  
RTS/CTS  
Hardware check used to tell an intelligent device to stop or  
resume data transmission.  
Sportster Winmodem 33600 & x2/56K - User's manual  
65  
 
Serial transmission  
Sequential data transfer, one bit at a time, using only one  
electrical circuit.  
Synchronous transmission  
Data transmission during which both communicating devices are  
synchronized by a common clock. Using this mode eliminates the  
need to systematically add a stop bit and a start bit to each  
transmitted character.  
Terminal mode  
Required simulation mode for computers to transmit data. In  
terminal mode, the computer acts as though it were a dumb  
terminal rather than a data processing unit. Keystrokes go  
directly to the modem whether they are modem commands or  
data to be transmitted via the telephone lines. Received data are  
displayed directly on the screen.  
Terminal  
A unit whose keyboard and screen are used to send and receive  
data via a communications link. A terminal differs from a micro-  
computer in that it has very little or no internal processing  
capabilities.  
Transmission rate  
Number of bits transmitted per second (bit/s). Communications  
channels using modems on telephone lines are set to binary  
rates, generally 2400, 9600, 14400 or 28800.  
Xmodem  
The first of a family of error correction software protocols used  
to transfer files between modems. These protocols are in the  
public domain and are available on many servers. Ymodem and  
Zmodem are later protocols.  
66  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
XON/XOFF  
Standard ASCII control characters used to tell an intelligent  
device to stop or resume data transmission. In most systems,  
typing <Ctrl>-S sends the XOFF character (which tells the  
remote device to stop transmitting). Some equipment, including  
your modem, interpret  
<Ctrl>-Q as XON (which tells the remote device to resume  
transmission), others interpret touching any key after <Ctrl>-S  
as an XON.  
Sportster Winmodem 33600 & x2/56K - User's manual  
67  
 
68  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
Limited Warranty  
U.S. Robotics warrants to the original end-user purchaser that  
this product will be free from defects in materials and  
workmanship for a period of five years from the date of  
purchase. During the limited warranty period, and upon proof of  
purchase, the product will be repaired or replaced (with the  
same or a similar model, which may be a refurbished model) at  
U.S. Robotics’ option, without charge for either parts or labor.  
This limited warranty shall not apply if the product is modified,  
tampered with, misused, or subjected to abnormal working  
conditions (including, but not limited to, lightning and water  
damage).  
THIS LIMITED WARRANTY DOES NOT GUARANTEE YOU  
UNINTERRUPTED SERVICE. REPAIR OR REPLACEMENT AS  
PROVIDED UNDER THIS LIMITED WARRANTY IS THE  
EXCLUSIVE REMEDY OF THE PURCHASER. THIS LIMITED  
WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES,  
EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,  
ANY IMPLIED WARRANTY OF MERCHANTABILITY OR  
FITNESS FOR A PARTICULAR USE OR PURPOSE. U.S.  
ROBOTICS SHALL IN NO EVENT BE LIABLE FOR ANY  
SPECIAL,  
CONSEQUENTIAL  
INDIRECT,  
INCIDENTAL,  
OF  
PUNITIVE  
ANY KIND  
OR  
OR  
DAMAGES  
CHARACTER, INCLUDING, WITHOUT LIMITATION, LOSS OF  
REVENUE OR PROFITS, FAILURE TO REALIZE SAVINGS OR  
OTHER BENEFITS, LOSS OF DATA OR USE, DAMAGE TO  
EQUIPMENT, AND CLAIMS AGAINST THE PURCHASER BY  
ANY THIRD PERSON, EVEN IF U.S. ROBOTICS HAS BEEN  
Sportster Winmodem 33600 & x2/56K - User's manual  
69  
 
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.  
This limited warranty gives you specific legal rights. You may  
have others, which vary from nation to nation. Some nations do  
not allow limitations on duration of an implied warranty, or the  
exclusion or limitation of incidental or consequential damages, so  
the above exclusion or limitation may not apply to you.  
70  
Sportster Winmodem 33600 & x2/56K - User's manual  
 
jj  
 
1.024.1388-00  
 

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