Inband pulsing single frequency line signaling 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
2.
The test methods for the technical specifications of inband pulsing single frequency line signalling system for automatic telephone switching network 电话自动交换网带内单频脉冲线路信号技术指标测试方法
3.
Integrated services digital network - audiovisual services - inband signalling procedures for audiovisual terminals using digital channels up to 2048 kbit s ; english version ets 300143 : 1994 综合服务数字网.声频视频服务.传送速度2048kbit s以