Filter
Top Products
The sample modem configuration files included in this appendix do not support these
modems, so custom configuration files are necessary. Anchor Automation 2400E is
an example of such a modem.
If you experience unexplainable performance problems that may be due to Xon/Xoff
characters, it is recommended that you upgrade your modem.
Ring Detection
Most modems produce an interrupt request each time they detect a ring signal.
Some modems generate an interrupt only on the first ring signal that they receive.
AT&T DataPort 2001 is an example of such a modem.
The Service Processor uses the ring interrupt request to count the number of rings
when Ring Indicate Power-On (RIPO) is enabled. If your modem produces an
interrupt on only the first ring, set Ring Indicate Power-On to start on the first ring.
Otherwise, you can choose to start Ring Indicate Power-On on any ring count.
Terminal Emulators
The Service Processor is compatible with simple ASCII terminals, and therefore
compatible with most emulators. When a remote session is handed off from the
Service Processor to the operating system, agreement between terminal emulators
becomes important.
The server's operating system will have some built-in terminal emulators. You may
also have a commercially available terminal emulation. It is important that the local
and host computers select the same or compatible terminal emulators so that the key
assignments and responses match, ensuring successful communications and control.
For best formatting, choose line wrap in your terminal emulator setup.
Recovery Procedures
Situations such as line noises and power surges can sometimes cause your modem
to enter an undefined state. When it is being used for dial-in, dial-out or ring indicate
power-on, your modem is initialized each time one of these actions is expected. If
one of these environmental conditions occur after your modem has been initialized, it
might be necessary to recover your modem to a known state.
If your modem communicates correctly with remote users, it is probably in control. It
may be wise to occasionally change some of the functional settings and then change
them back, just for the sense of security that the modem is communicating, and to
ensure it has been initialized recently.
182 RS/6000 Enterprise Server Model H80 Series User's Guide