IBM RS/6000 44P Series 270, User Manual

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To set up a remote terminal session, dial into the service processor and start the
system. After the operating system is loaded and initialized, the connection will be
dropped. At this point, you call the server back and the operating system will answer
and offer you the login prompt.
Prevention Strategy
The disconnect is caused by the operating system when it initializes the Primary
Console. The modem tests listed above are conducted with the remote terminal
selected as the primary console to manifest the modem’s response to DTR transitions.
v
If a local ASCII terminal or a graphics console is to be a permanent part of your
server, then make one of them the primary console. Your remote terminal will no
longer experience the connection loss.
v
If a local console is not a permanent part of your server, you can still assign either
the unused graphics console or the unused serial port as the primary console. This
gives you the desired seamless connection at your remote terminal.
v
If you choose to use the unused serial port as the primary console, some initialization
traffic will be sent to any serial device attached to that port. As a result, that serial
device’s connection and function could be affected. These impacts may make that
port unattractive for devices other than a temporary local ASCII terminal.
Modem Configuration Samples
Sample File modem_z.cfg
#
# COMPONENT_NAME: (ESPSETUP) ENTRY SERVICE PROCESSOR SETUP Z
#
# FUNCTIONS: Modem configuration file for many early Hayes* compatible modems.
# This example uses the ATZ reset command to choose the factory defaults.
# This setup will work for many modems, but it is required for early vintage
# modems which respond to neither the ATZ0 reset command nor the extended (&)
# commands. Refer to your modem manual.
#
# * Trademark of Hayes Microcomputer Products, Inc.
#
# (C) COPYRIGHT International Business Machines Corp. 1996
# All Rights Reserved
# Licensed Materials - Property of IBM
#
# US Government Users Restricted Rights - Use, duplication or
# disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
#
#
# If the modem has configuration switches, they should be set to the
# factory default settings.
ICDelay 1
DefaultTO 10
CallDelay 120
# AT Attention Code , Inserts delay in dialing commands
# Z Reset to factory defaults Q0 Turn on responses
# E0 Turn echo off Q1 Turn off responses
Appendix E. Modem Configurations
177