This identification method is referred to as position-based multiplexing and delineation. Inefficient while different coders in LLCs or silence suppression are used. The new AAL should support the transfer of variable-size small packets across ATM networks. Inclusion of a pointer to identify the remaining length of the packet that started in the prior cell and overlaps into the current cell . Incorporation of some mechanism to detect cell loss , because loss of an ATM cell possibly may lead to misconcatenation of native packets.
Many alternatives are consistent with the protocol concepts described above.
The purpose of error detection is to guarantee that CID, LI, and other critical protocol header fields are not misinterpreted. The maximum number of CIDs to be supported in one ATM connection. Of course, the number of LLCs to be supported also depends on the ratio of the ATM-connection bandwidth to the bandwidth required by a single native connection. This situation permits multiplexing with a smaller CID field. As a compromise, a CID field of 8 bits supporting a maximum of 255 native connections over a single ATM VCC was chosen.