Configuration File Selection - IBM RS/6000 Enterprise Server M80 Service Manual

Configuration File Selection

Use the following steps to select a configuration file:
1. Is your modem an IBM 7852-400?
If Yes, use modem configuration file modem_m0.cfg and go to step 7.
Note: The IBM 7852-400 modem has DIP switches on the right side of the unit. See "IBM 7852-400
DIP Switch Settings" on page 513 for the correct switch settings.
If No, continue with step 2.
2. Is your modem an IBM 7857-017?
If Yes, use modem configuration file modem_m1.cfg and go to step 7.
Note: The IBM 7857-017 modem has two telephone line connections on the back of the unit. One is
marked LL (for Leased Line), and the other is marked PTSN (for Public Telephone Switched
Network). The service processor expects to use the modem on the public network, so the
telephone line should attach to the PTSN connector.
If No, continue with step 3.
3. Does your modem respond to the extended command set (prefixed with &)?
If Yes, go to step 5.
If No, continue with step 4.
4. Does your modem respond to:
v ATZ reset command
or
v ATZn reset commands, where n can be 0, 1, and so on?
If ATZ, configuration file modem_z.cfg is recommended.
If ATZn, configuration file modem_z0.cfg is recommended.
Go to step 7.
5. Does your modem command set include a test for V.42 error correction at the remote modem (often
called "Auto-Reliable Mode")?
If Yes, disable this test. You can use sample configuration files /usr/share/modem_m0.cfg or
/usr/share/modem_m1.cfg as models to help you create a file for your particular modem. See
"Customizing the Modem Configuration Files" on page 512 for more information. Go to step 7.
If No, go to step 6.
6. Does your modem respond to:
v AT&F reset command
or
v AT&Fn reset commands, where n can be 0, 1, and so on?
If AT&F, configuration file modem_f.cfg is recommended.
If AT&Fn, configuration file modem_f0.cfg or modem_f1.cfg is recommended, depending on which
provides the hardware flow control profile.
7. You have completed selection of the configuration file.
If your modem configuration selection is not available in the Service Processor Modem Configuration
Menu, you must access it through the Configure Remote Maintenance Policy Service Aid.
If you find it necessary to adjust any of these configuration files, use the manual provided with your
modem to accomplish that task. It is recommended you select settings that enable hardware flow
control and respond to DTR.
Note: Some older modems do not respond to the X0 or &R1 commands. Edit out these commands
from the modem configuration file if yours is such a modem. See your modem manual for more
information.
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Service Guide