More and more factories devote to the new products developing of H. 323, more and more customers establish their own meeting TV systems adopting H. 323 technology and products.
We have evaluated the H. 323 and SIP conferencing architectures in terms of scalability and heterogeneity.
根据可测量性和异质性，我们已经在建筑会议中评估了H . 323和SIP。
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This paper firstly introduces the definition, operation type, instruction and voice communication protocol including H. 323 of ITU-T and Session Initiation protocol (SIP) of IETF.