ETSI ETS 300 143 PRA1-1995 修改件1.综合业务数字网(ISDN).视听业务.用于使用速率高达2,048kbit/s的数字通道的视听终端的带内信令程序
AMD 1 Integrated Services Digital Network (ISDN); Audiovisual Services; Inband Signalling Procedures for Audiovisual Terminals Using Digital Channels up to 2 048 kbit/s