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Session Initiation Protocol (SIP)

The Session Initiation Protocol (SIP) is an application-layer control (signaling) protocol for sessions.

These sessions include Internet telephone calls, multimedia distribution, and multimedia conferences. SIP can create, modify, and terminate sessions with one or more participants.

The SIP protocol is a member of the ["VOIPProtocolFamily"].


XXX - add a brief description of SIP history

Protocol dependencies

Example traffic



The SIP dissector is fully functional. You can also view SIP message statistics (Statistics | SIP...) or view SIP call flow graphs (Statistics | VoIP Calls)

Preference Settings

Example capture file

attachment:SampleCaptures/aaa.pcap Sample SIP and RTP traffic.

Display Filter

A complete list of SIP display filter fields can be found in the [ display filter reference]

Capture Filter

You cannot directly filter SIP protocols while capturing. However, if you know the ["UDP"] or ["TCP"] or port used (see above), you can filter on that one.

["IETF"] Charters: