Before You Begin

• Choose a modem configuration script. Silicon Graphics provides a set of predefined configuration scripts for the many popular modems to help with your modem installation. These scripts describe the correct jumper settings for your modem and contain the expected AT commands and values for your modem to operate correctly. If your modem is not listed, you can use the fix-hayes script as a template and customize it to your modem's specifications.

  Table 1-1 shows the modem types and their configuration scripts.

  Modem Configuration Scripts

  Modem	Configuration Script
  Telebit T2500, T1600, QBlazer, T3000, and WorldBlazer	fix-telebit
  ZyXEL U-1496	fix-zyxel
  Intel 14.4ex	fix-intel
  DSI 9624 models	fix-dsi
  US Robotics (also called USR)	fix-usr
  Hayes ACCURA (also called Hayes14)	fix-hayes

• Check that the UUCP software is installed. The eoe2.sw.uucp subsystem must be installed on your system. It is shipped with your IRIX system software distribution, but it is not installed by default. You can determine whether eoe2.sw.uucp is installed by using the command:

  versions | grep uucp

  Check the versions output for the following line:

  I eoe2.sw.uucp uucp utilities

  If the line above is not present, eoe2.sw.uucp is not installed. See IRIX Admin: Software Installation and Licensing for instructions on installing a subsystem and install eoe2.sw.uucp.

• Check the baud rate of the modem. The installation procedure examples assume you are using a 28,800 or 14,400 baud modem. Be sure to substitute your modem baud rate where applicable.

• Check your serial port interface speed. The interface speed is the maximum speed of your computer's serial port, generally 38,400 bps. Check your system Owner's Guide to be sure. Use the maximum speed common to both modem and computer.

• If your modem supports hardware flow control (RTS/CTS) be sure to use it and disable support for software flow control (XON/XOFF).

• Determine how you want to use your modem: dial-in only, dial-out only, or dial-in/dial-out.