Patent ID: 7643433

Claim:
A method of establishing operation of a local Link Access Protocol Balanced (LAPB) device operable as a data computing equipment device or a data terminal equipment device, the method comprising: receiving an initiator frame for an asynchronous balanced mode of operation directed to said local LAPB device from a remote LAPB device; determining, based upon information contained within said received initiator frame, whether said remote LAPB device is operating as a data computing equipment device or a data terminal equipment device; if it is determined that said received frame information indicates that said remote LAPB device is operating as a data terminal equipment device, initiating operation of said local LAPB device as a data computing equipment device; and if it is determined that said received frame information indicates that said remote LAPB device is operating as a data computing equipment device, initiating operation of said local LAPB device as a data terminal equipment device.