SIP is the next generation network interface protocol, application control agreements belong. The standard is based on the IETF and the ITU-T standards for the relevant infrastructure and, in light of China's actual telecommunications network, Comprehensive and China Telecom network for the next generation of experimental results enacted.

中国电信SIP规范第一部分_总体要求.pdf
中国电信SIP规范第三部分.pdf
中国电信SIP规范第二分册_协议细则.pdf

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