Patent ID: 7522610

Claim:
An apparatus for transmitting asynchronous transfer mode (ATM) adaptation layer-2 (AAL 2 ) type ATM cells (AAL 2 cells), comprising: an AAL transmitter to generate one or more AAL cells by multiplexing N AAL packets, generated by adding an AAL packet header to an i th data subset of an original single user data set, wherein each of the one or more AAL cells includes an ATM header and a Start of Packet field to indicate a starting location of an i th one of the N AAL packets within the corresponding AAL cell, the AAL transmitter residing in a channel card, the channel card further including an AAL receiver and a CPU; an AAL receiver to receive the one or more AAL cells generated by the AAL transmitter and to restore the original single user data set by demultiplexing the N AAL packets included in the one or more AAL cells, the AAL receiver residing in an AAL 2 processor; and an AAL 2 transmitter to receive the restored original single user data set from the AAL receiver and to generate one or more of the AAL 2 cells by multiplexing M common part sublayer (CPS) packets, generated by adding a CPS packet header to a j th data subset of the restored original single user data set, the AAL 2 transmitter residing in the AAL 2 processor, wherein i, j, N, and M are positive integers, 1≦i≦N, and 1≦j≦M.