ETSI TS 183 029-2007 电信和互联网融合业务及高级网络协议(TISPAN).PSTN/ISDN仿真业务:显式通信转移(ECT).协议规范(版本1.2.1)
Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); PSTN/ISDN simulation services: Explicit Communication Transfer (ECT); Protocol specification V1.2.1