Private Telecommunication Network (PTN) - Signalling protocol at the S-reference point - Circuit mode basic services; English version ETS 300192/A1:1996
国外标准现行
标准号:DIN ETS 300192/A1-1996
标准名称: 专用电信网络(PTN).基准点S的信令协议.线路式基本服务
英文名称:Private Telecommunication Network (PTN) - Signalling protocol at the S-reference point - Circuit mode basic services; English version ETS 300192/A1:1996