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.
Sofia-SIP
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Vangie Beal
Vangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s.
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