[1]JosefGlasmann,Wolfgang Kellerer, Harald Müller. “Service Architectures In H.323 And SIP: A Comparison” .
FourthQuarter2003,Volume 5, No.2.
[2]ITU-TRecommendationH.323 v4.
[3]RFC3261. SIP: Session Initiation Protocol, June 2002.
[4]李建芳.H.323和SIP在IP電話網(wǎng)絡(luò)中的互通.中國數(shù)據(jù)通信 2003.3. (尹阜琪編輯)
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