Communications network and method for framing point-to-point frame structures

A communications network for framing point-to-point frame structures, said communications network comprising:

• a data terminal;
• a mobile terminal using a serial interface and a point-to-point protocol to connect with the data terminal;
• a packet switched network using an air interface and a communications protocol to connect with the mobile terminal;
• and
• said mobile terminal operable to insert a first plurality of fields onto a first frame structure received from the packet switched network, forward the inserted first frame structure to the data terminal equipment, strip a second plurality of fields from a second frame structure received from the data terminal equipment, and forward the stripped second frame structure to the packet switched network.

A method used in a communications network for framing point-to-point frame structures, said method comprising the steps of:

• connecting a mobile terminal to a data terminal using a serial interface and a point-to-point protocol;
• connecting a packet switched network to the mobile terminal using an air interface and a communications protocol;
• transmitting a first frame structure from the packet switched network to the mobile terminal;
• receiving the transmitted first frame structure within the mobile terminal;
• inserting a first plurality of fields onto the received first frame structure;
• and
• forwarding the inserted first frame structure to the data terminal.