Payload Header Suppression Definition

Also known as header compression and header suppression. Referring to various techniques used to eliminate or reduce the number of headers associated with voice over Internet Protocol (VoIP) packets. In applications where VoIP packets associated with multiple conversations are grouped into an Ethernet or frame relay frame, much of the header information is redundant and, therefore, eligible for suppression. Payload header suppression improves the efficiency of the link and increases throughput. For example, the FRF.20 Implementation Agreement describes an algorithm that examines the 44 octets of VoIP header, looking for redundancy and other opportunities to send only a reference to the header, rather than the entire header. This technique reduces the header to as few as 2
Webster's New World Telecom

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