power off. (Use the AIX command shutdown -F.) Watch for the message NO
CARRIER on your remote terminal.
If Yes, this is the correct response. The modem is set up correctly.
If No, try another &Dn setting for your server's modem. See your model manual
for this information. The &Dn command appears in three places each in three of
the sample modem configuration files. Only the following sample modem
configuration files contain the &Dn command (in three places each):
modem_f.cfg
modem_f0.cfg
modem_f1.cfg
If you are using modem_z.cfg or modem_z0.cfg, you cannot control DTR
response. If your remote terminal does not disconnect after logging off, you
must command the remote terminal emulator to hang up. This then breaks the
connection.
Recovery Strategy
The recovery strategy consists of making two calls to establish a remote session.
This solution is the easiest to implement and allows more freedom for configuring
your server's serial ports.
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, 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 tests listed in “Transfer of a Modem Session” on page 183 are
conducted with the remote terminal selected as the primary console to manifest the
modem's response to DTR transitions.
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.
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.
184 RS/6000 Enterprise Server Model H80 Series User's Guide