Summary

This Recommendation is a channel aggregation protocol for multilink operation on circuit‑switched networks. It is intended for use in applications where low latency and high efficiency are important considerations, such as H.324 multimedia telephony. Unlike synchronous time-division-multiplexing channel aggregation protocols such as Recommendation H.221 and ISO/IEC 13871 ("BONDING"), this Recommendation has the ability to operate with a changing number of channels with arbitrary, differing, or continuously varying bit rates (including modems according to Recommendation V.34) as well as fixed-rate channels (such as ISDN B-channels). Unlike packet-oriented channel aggregation protocols such as RFC 1990 ("PPP Multilink Protocol"), this Recommendation finely distributes payload octets across different channels, simultaneously minimizing latency and overhead.