ETSI TS 129 164-2009 数字蜂窝通信系统(第2+阶段).全球移动通信系统(UMTS).BICC或ISUP作为信令协议的3GPP CS域和外部SIP-I网络间的互通(版本8.1.0).3GPP TS 29.164(版本8.1.0,第8次发布)
Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Interworking between the 3GPP CS domain with BICC or ISUP as signalling protocol and external SIP-I networks V8.1.0; 3GPP TS 29.164 version 8.1.0 Re