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Session Initiation Protocol (SIP) - Cisco
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日期：2025-05-03
Session Initiation Protocol (SIP) is a protocol developed by the IETF MMUSIC Working Group as an alternative to H.323. SIP features are compliant with IETF RFC 2543, published in March 1999. SIP equips platforms to signal the setup of voice and multimedia...看更多
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