FTTC INTERFACE CIRCUITRY AS A PHYSICAL LAYER ENTITY.

摘要

In an Asynchronous Transfer Mode (ATM) communications network (150) which operates over a shared media a method of addressing and access control between a central transceiver (120) and multiple transceivers (130) is required. A device identifier is placed in the Generic Flow Control (GFC) field (400) of the ATM cells (320) to indicate that cells (320) are designated for a particular transceiver or transceivers in the residence. In the reverse direction, transceivers (130) in the residence use the GFC field to indicate that they are attempting to sign on to the network. The GFC bits are returned to zero prior to passing the ATM cells to the ATM processing layer.