Signalling Procedures - Abnormal Release of Outgoing and Incoming R2 Registers - Specifications of Signalling Systems R1 and R2 (Study Group XI) 2 pp
国外标准现行
标准号:ITU-T Q.476-1989
标准名称: 信号程序-异常信号的向外释放
英文名称:Signalling Procedures - Abnormal Release of Outgoing and Incoming R2 Registers - Specifications of Signalling Systems R1 and R2 (Study Group XI) 2 pp