IMS网络真实主叫号码端到端传递 技术要求 中国电信集团公司 二零一一年九月 IMS网络真实主叫号码端到端传递技术要求 I 目录 1、功能需求 ................................................................................................................................... 1 2、技术方案 ................................................................................................................................... 1 3、对 IMS网络各设备的新增功能要求 ...................................................................................... 2 3.1 主叫P-CSCF.................................................................................................................... 2 3.2 主叫S-CSCF.................................................................................................................... 2 3.3 提供主叫号码变换服务的 AS ...................................................................................... 2 3.4 主叫侧其他 AS（包括 IM-SSF） .................................................................................. 3 3.5 BGCF ............................................................................................................................. 3 3.6 MGCF ............................................................................................................................ 3 3.7 I-CSCF ........................................................................................................................ 4 3.8 被叫侧的 S-CSCF ....................................................................................................... 4 3.9 被叫侧的前转业务 AS ............................................................................................... 4 3.10 被叫侧的其他 AS ................................................................................................... 4 3.11 被叫侧的 P-CSCF/AGCF ........................................................................................... 4...
