会话初始协议(SIP)技术要求 第6部分:与承载无关的呼叫控制(BICC)协议与统一IMS网络SIP协议的互通
Technical Requirements for Session Initiation Protocol. Part 6:Interworking between BICC and SIP based on the unified IMS
2010-12-29
YD/T 3267-2017
不同运营商的IMS网络和电路交换网、软交换网络互通技术要求
Technical Requirements for interworking between IMS networks and Switched circuit networks, softswitch networks of different operators