User Manual

ISI5634PCI/4/8 User Guide

1. Turn on your computer and run your communications software.

2. Find the dialog box or menu that allows you to specify your modem. See different data

communications examples below:

• In Windows Terminal, select Settings and then Modem Commands

• In HyperTerminal, select File, Properties, and then Phone Number

3. Select your modem from the software’s modem list. If not listed, choose a generic modem and

modify the settings as necessary.

4. Change the modem initialization string, if necessary. The factory default configuration works well for

most purposes.

• To load the factory default configuration, use AT&F.

• To load a custom configuration that was saved using the &W command, use ATZ. Note that the Z

command must be in a command string by itself.

• For a Macintosh, the initialization should include the &D0 command.

• If you don’t want the modem to always answer the phone, add S0=0 to the string.

Note: To change the modem’s default configuration, type new commands in the software’s terminal

window, adding the &W command to store them in the modem’s nonvolatile memory.

For instance, to create a default configuration for a Macintosh computer that turns off autoanswer,

type AT&F&D0S0=0&W. The new configuration loads automatically whenever the modem is turned

on or receives the ATZ command.

5. Select the port where the modem is connected (normally starts at COM5).

6. Select your serial port speed and label it maximum speed, DTE bps, or baud rate.

• If you use data compression, set your serial port baud rate to four times the modem’s maximum

transmission speed or faster.

However, few files can be compressed enough to require speeds that high, and not all serial ports can

handle speeds that high.

• Set the serial port baud rate to 320,400 bps.

7. If the software has an autobaud selection make sure it is disabled. Autobaud applies only to older

modems and can cause problems if enabled.

8. If the software allows you to edit the no connect messages (NO CARRIER, BUSY, NO ANSWER,

NO DIALTONE), make sure there is space between DIAL and TONE in NO DIALTONE.

References

The World Wide Web

The World Wide Web is an excellent source of information about modems in general and modem

installation, configuration, and troubleshooting in particular. The following Web sites are good places to

start:

• Costmo’s Other Resources Page:

http://modems.rosenet.net/or/

• Curt’s High Speed Modem Page:

http://elaine.teleport.com/~curt/modems.html

• Data Communications FAQ:

http://www.best.com/~malch/comfaq.html

• Multi-Tech Systems, Inc.:

http://www.multitech.com/