Networking Guide
Chapter 9, Configuring the Point-to-Point Protocol (PPP)

Connections with SCO TCP/IP Release 1.2.0 PPP

Connections with SCO TCP/IP Release 1.2.0 PPP

On the new system, use the PPP Manager to set the following link parameters to Yes (the corresponding /etc/ppphosts entry is shown when the default configuration must be overridden):