ETSI EG 201 992-2001 高级网络的业务和协议(SPAN).智能网(IN).和基于IP网络互通的基于IN网络的架构和信令要求(版本1.1.1)
Services and Protocols for Advanced Networks (SPAN); Intelligent Networks (IN); Architectures and Signalling Requirements for IN-Based Networks Interworking with IP-Based Networks