User guide

Chapter 2 - Installation
12 Multi-Tech Systems, Inc. MT5656ZDX User Guide
Installing on a Linux Computer
These instructions describe how to install a modem on a computer using RedHat Linux 6.2 operating system.
Other versions of RedHat and other Linux operating systems should be similar. With 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
Port Linux Port
Com 1 ttyS0
Com 2 ttyS1
Com 3 ttyS2
Com 4 ttyS3
Connecting the Modem and Verifying Operation
1. Connect the external modem to an available serial port.
2. Use the Terminal Program Minicom to verify operation. At the command prompt, type minicom –s and press
ENTER.
3. Select Serial port setup and press ENTER.
4. From Serial port setup, use the A key to access Serial Device, and then press ENTER.
5. Press ESC. You are now in the Minicom terminal.
6. Type AT and press ENTER. The screen should display OK to verify the operation. Alternately, dial a phone
number to verify line operation
To leave Minicom, press CTRL + A, and then press Z. 7. On the help menu, press X to exit.
Using the Modem Connect to the Internet
Linux allows different graphic user interfaces (GUI). The following steps use the Gnome Desktop GUI. It is
assumed that the ISP being called assigns the DNS and IP addresses.
1. Select the Gnome Footprint from the taskbar.
2. Select Internet from the menu.
3. Select Dialup Configuration Tool.
4. Select Add, and then click Next.
5. Enter the connection name and phone number, and then click Next.
6. Enter your user name and password, and then click Next.
7. Select Normal ISP if your ISP is not listed, and then click Next.
8. Click Finish.
Calling the ISP
1. Select the Gnome Footprint from the taskbar.
2. Select Internet from the menu.
3. Select RH PPP Dialer.