What is SIP / SIP Trunking?

Modified on Thu, 27 Jul 2017 at 05:51 PM

Session Initiation Protocol (SIP) is a signaling protocol, commonly used for controlling multimedia communication sessions. This includes voice and video calls over Internet Protocol (IP). SIP can be used for creating, modifying and terminating unicast (two-party) or multicast (multi-party) sessions consisting of one or several media streams.

Session Initiation Protocol Trunking (SIP Trunking) is commonly used to provide premise based phone systems with VoIP inbound and outbound calling services.  SIP Trunking can be used with legacy or IP enabled, premise based phone systems to provide a low cost alternative to traditional analog telephone lines or T1/PRI trunking services.

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