Abstract:Planning Internet-based applications services such as telephony, requires a variety of components to ensure the quality of services, for instances, user identification, authentication, authorization, registration, accounting, routing, gateway discovery, directory service, signaling [1], etc. Two protocols have emerged to provide these functions, H.323 series of recommendations by ITU-T, and Session Initiation Protocol (SIP) by Multi-Party Multimedia Session Control Working Group, IETF. SIP is a call proce… Show more
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