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Sofia-SIP

Vangie Beal
Last Updated May 24, 2021 7:55 am
An open-source SIP (Session Initiated Protocol) User-Agent library that is used in building SIP client software for VoIP, IM, and many other real time and person-to-person communication services. Sofia-SIP is compliant with the IETF RFC3261 specification. It is based on a SIP stack developed at the Nokia Research Center.