Home / Standards / GB 3376-1982 GB 3376-1982 Abolished Inband pulsing single frequencyline signalling system for telephone automatic switching network 电话自动交换网带内单频脉冲线路信号方式 Standard Type GB ICS 33.040.30 CCS M12 Status 废止 Issue Date 1982-12-29 Implementation 1983-10-01 Responsible Dept 工业和信息化部（通信） Drafting Unit N/A