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Signaling compression

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Signaling compression, or SigComp, is a compression method designed especially for compression of text-based communication data as SIP or RTSP. SigComp had originally been defined in RFC 3320 and was later updated with RFC 4896. A Negative Acknowledgement Mechanism for Signaling Compression is defined in RFC 4077. The SigComp work is performed in the ROHC working group in the transport area of the IETF.

General architecture

  • RFC 3320 - Signaling Compression (SigComp)
  • RFC 3321 - Signaling Compression (SigComp) - Extended Operations
  • RFC 3485 - The Session Initiation Protocol (SIP) and Session Description Protocol (SDP) Static Dictionary for Signaling Compression (SigComp)
  • RFC 3486 - Compressing the Session Initiation Protocol (SIP)
  • RFC 4077 - A Negative Acknowledgement Mechanism for Signaling Compression
  • RFC 4464 - Signaling Compression (SigComp) Users' Guide
  • RFC 4465 - Signaling Compression (SigComp) Torture Tests
  • RFC 4896 - Signaling Compression (SigComp) Corrections and Clarifications
  • RFC 5049 - Applying Signaling Compression (SigComp) to the Session Initiation Protocol (SIP)
  • RFC 5112 - The Presence-Specific Static Dictionary for Signaling Compression (Sigcomp)
  • 3GPP TR23.979 Annex C - Required SigComp performance
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