The next task shows how to enable the dial-in server to open communications with any dial-out machine, based on options that are defined in the following PPP configuration files:
/etc/ppp/options
/etc/ppp/options.ttyname
Before you proceed, you should have done the following:
Configured the serial port and modem on the dial-in server, as described in How to Configure the Modem and Serial Port (Dial-in Server).
Configured information about the prospective users of the dial-in server, as described in How to Configure Users of the Dial-in Server.