closed circuit signalling [通信] 闭路通信
track circuit signalling 轨道电路号志
track-circuit signalling 轨道电路信号
signalling circuit 信令电路
signalling track circuit 信号轨道电路
This Recommendation contains the principles and examples of Signalling between the International Switching Centres (ISC) and their associated circuit multiplication equipments.
本建议包括国际交换中心(isc)和其有关的电路倍增设备之间的信令原则和示例。
In this paper, the principles of LH integrated circuit and signalling are introduced. The problems of disturbance and adopted measures against disturbance are also analyzed.
本文重点阐述LH集成电路与保护信号装置原理，并分析弱电保护干扰问题及抗干扰措施。
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