ETSI TS 101 319-1998 网络上电信和互联网协议的协调(TIPHON).从一个H.323终端到一个交换电路网(SCN)内终端的基本呼叫信令(版本1.6.4)
Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON); Signalling for Basic Calls from an H.323 Terminal to a Terminal in a Switched-Circuit Network (SCN) (V1.6.4)