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Session Initiation Protocol

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Definition Edit

A Session Initiation Protocol (SIP) is

[a]n IP telephony signaling protocol that is widely used to start and terminate voice calls over the Internet. Supporting two-way and multi-party calls, SIP can be used for any real-time media transmission over an IP network, including video calling and conferencing.[1]

References Edit

  1. NSTAC Report to the President on Communications Resiliency, at C-6.

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