COURIER HIGH SPEED MODEMS
External Modem Set Up 2-3
• If your machine has other than a 25- or 9-pin port, check
your computer documentation or consult your dealer to
find out what type of RS-232 connector is required.
WARNING: If you're planning to use the high speed
computer-to-modem rates of 115.K, 57.6K or 38.4K bps, follow
the instructions concerning the RS-232 cable in Appendix B.
The guidelines there will help you to avoid signal degradation
at very high speeds.
Communications Software. . .
. . .if the modem is attached to a computer instead of a terminal.
The software uses the modem's AT command set to control
many communications functions, including configuring the
modem, dialing, and answering calls, and also enables the
transfer of files and other operations.
Some users prefer their communications software to take
control of the modem, and are more comfortable with a
program that makes the modem almost transparent. Others
prefer a program that allows them to use the modem's AT
command set sometimes, and their software at other times,
depending on the task at hand.
Review Chapter 4 so that you have a basic understanding of the
modem's requirements and operation.
Telephone Adapter. . .
. . .if you have an older telephone installation that does not
have the appropriate modular wall jack and plug.
Adapters and RJ11C connectors are available from your
telephone company or computer dealer.
YOU SHOULD. . .
Refer to Appendix F. . .
. . .if your phone line is user-installed or if it is leased from the
telephone company.
