Bay Networks 5390 Administering page 148

Modems
• Set the mode parameter to adaptive.
• Define the type of modem that is connected to the port via the type_of_modem parameter.
This 16-byte string should match the definition of the type_of_modem field in the modem
section of the Model 5390 configuration file.
• To enable CLI security for a port configured for incoming calls, set the cli_security and
connect_security parameters. To enable port access via a password, set the port_password
parameter.
• Setting the type parameter to dial_in registers the user with the who database as soon as the
CLI process attaches to the line.
• Set the speed parameter to the speed of the modem.
• Set the control_lines, input_flow_control, and output_flow_control parameters as desired
(see Modem Signals on page A6-1 for more details).
• The default setting for software flow control is start/stop
(XON/XOFF). This setting may not be suitable for file transfer applications (uucp, kermit,
xmodem). Optionally, remote users can issue the CLI stty to turn off flow control.
Do not set software flow control to start/stop if the port is configured for use with SLIP. PPP
can use start/stop if the ppp_acm parameter is set to escape the start and stop characters.
• When using a modem connected to a bidirectional port, if the need_dsr parameter is enabled,
the connection fails if no DSR signal is present; if need_dsr is disabled, the Model 5390
server accepts the connection.
• Set the data_bits, stop_bits, and parity to match the modem's requirements.
• Setting the cli_inactivity parameter causes the port to reset after all CLI sessions have exited.
• Set the inactivity_timer to limit the amount of time the modem can be left idle with a
connection. When this amount of time passes with no activity detected, the Model 5390
server drops DTR, terminates all sessions to host(s), and resets the port. The default is off. Set
both input_is_activity and output_is_activity to Y.
• Set the attn_string parameter to define a control character or character string. Setting this
parameter when using a modem is helpful because modems do not always respond to the Break
key by signaling the Model 5390 server to suspend the session with the host and return to the
CLI prompt. However, set attn_string to off when using file transfer programs (uucp, kermit,
xmodem); otherwise the remote user must issue the CLI stty command to turn off the parameter.
A6-6 893-741-B