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MultiModemII User Guide
Appendix F: Installing a Modem Under Linux
Introduction
This appendix explains how to install a modem on a computer operating under the
Red Hat Linux 6.2 operating system. Other versions of Red Hat and other Linux op-
erating systems should be similar. Briefly, in Linux, you do not need drivers for most
standard external modems and most internal ISA bus modems. Programs in Linux
commonly call upon the port, rather than the modem.
Standard Linux Serial Port Definitions
PC port
Com1
Com2
Com3
Com4
Installation
Connect the external modem to an available serial port.
Setup
This section describes how to make sure Linux can talk to the modem and be able to
dial up to the Internet. Linux can use different programs and desktops depending on
who made the Linux operating system and what version it is. The following proce-
dures use the most commonly installed components of Red Hat 6.2. More informa-
tion can be found in your Linux OS owner's manual.
Using the Terminal Program Minicom to Verify Operation
1. At the command prompt, type minicom –s and press E
2. Select Serial port setup and press E
3. From Serial port setup, use the A key to access Serial Device, and then press
4. Press E
5. You are now in the Minicom terminal. Type AT and press E
6. To leave Minicom, press C
7. On the help menu, press X to exit.
Linux port
ttyS0
ttyS1
ttyS2
ttyS3
E
.
NTER
.
SC
should display OK to verify the operation. Alternately, dial a phone number to
verify line operation
F Installing a Modem Under Linux
.
NTER
+ A, and then press Z.
TRL
.
NTER
. The screen
NTER
98
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