GB/T 3378-1982
ActiveSubscriber line signalling system for telephone automatic switching network
电话自动交换网用户信号方式
Application Summary AI generated
This standard specifies the signaling methods used between subscriber terminals and the telephone exchange in an automatic switching network, including dialing, ringing, and on-hook/off-hook signals. It is applied in the design, testing, and maintenance of fixed-line telephone systems and exchanges within China’s public switched telephone network (PSTN). The standard ensures compatibility and reliable call setup across different manufacturers' equipment in the national telecom infrastructure.
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