Summary

This Recommendation specifies the AAL type 2 that provides for the bandwidth-efficient transmission of low-rate, short, and variable length packets in delay sensitive applications. More than one AAL type 2 user information stream can be supported on a single ATM connection. This Recommendation covers the specification of the frame structure of the short and variable length packets, the packing of short length packets into one (or more) ATM cells, and the mechanisms to recover from transmission errors.

This Recommendation describes the interactions between AAL type 2 and the next higher layer, between AAL type 2 and the ATM layer, and between AAL type 2 and Layer Management, as well as AAL type 2 peer-to-peer operations.