Method and system for handling proprietary protocols and transmission control protocol/internet protocol (TCP/IP) over a point-to-point (PPP) connection

The present invention relates to a method and system for handling both proprietary and transmission control protocol/internet protocol (TCP/IP) protocols over a single point-to-point protocol (PPP) connection. A method and system for handling both proprietary and transmission control protocol/internet protocol (TCP/IP) protocols over a point-to-point protocol (PPP) connection. The method and system use the PPP connection over a single communication line to initially communicate using a proprietary protocol and then switch to a TCP/IP communication while still maintaining the connection to the single communication line.