IBM RS6000 - 7026 - H70 Service Manual

Also see for RS/6000 7025 F50 Series: User guide Service guide Service guide

With the remote terminal connected to serial port 1 and defined as the primaryconsole device, there are two tests you can perform:1. Will the modem drop the connection after the "System initialization complete"message appears at the 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 modem manualfor this information. The &Dn command appears in three places each in three ofthe sample modem configuration files2.2. Will the server's modem disconnect when the power drops? You can make thisobservation at the remote terminal by commanding your server to shutdown andpower off. (The AIX command shutdown -F will do this.) Watch for the messageNO 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 manualfor this information. The &Dn command appears in three places each in three ofthe sample modem configuration files2.Recovery StrategyThe recovery strategy consists of making two calls to establish a remote session.This is the easiest solution to implement, and allows more freedom for configuringyour server's serial ports.To set up a remote terminal session, dial into the Service Processor and start thesystem. After the operating system is loaded and initialized, the connection will bedropped. At this point, you call the server back and the operating system will answerand offer you the login prompt.2 Only the following sample modem configuration files contain the &Dn command (in three places each): modem_f.cfg modem_f0.cfg modem_f1.cfgIf you are using modem_z.cfg or modem_z0.cfg, you cannot control DTR response. If your remoteterminal does not disconnect after logging off, you must command the remote terminal emulator to hangup. This then breaks the connection.Appendix D. Modem Configurations D-7