Home / Standards / GB/T 7609-1995 GB/T 7609-1995 Active General test method for transmission performance of PCM voice channel in telecommunication network 电信网中脉冲编码调制音频通路传输特性常用测试方法 Standard Type GBT ICS 33.040.40 CCS M15 Status 现行 Issue Date 1995-12-14 Implementation 1996-06-01 Responsible Dept 工业和信息化部(通信) Drafting Unit N/A