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Title : The Presence-specific Dictionary for the
Signaling Compression (Sigcomp) Framework
Author(s) : M. Garcia-Martin
Filename : draft-garcia-simple-presence-dictionary-03.txt
Pages : 26
Date : 2007-3-28
The Session Initiation Protocol (SIP) is a text-based protocol for
initiating and managing communication sessions. The protocol is
extended by the SIP-events framework to provide, e.g., subscriptions
and notifications to presence information that are carried in
presence documents. SIP can be compressed by using Signaling
Compression (SigComp), which is enhanced by using the SIP/SDP
dictionary to achieve better compression rates. However, the SIP/SDP
dictionary is not able to increase the compression factor of
(typically lengthy) presence documents. This memo defines the
presence-specific static dictionary that SigComp may use in order to
achieve higher efficiency. The dictionary is compression algorithm
independent.
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