Our country present telephone network is mixed by digital mode and analogy mode, so our country present signaling system is at the stage of CAS and CCS commixture .
我国目前的电话网是数模混合的，所以我国目前的信令系统也处于随路信令和公共信道信令并存的阶段。
This paper studies the signaling system suitable for wireless link of the digital mine mobile communication system based on TRF6900 single chip, which operates in TDMA mode.
文章论述了基于射频芯片TRF 6900、多址方式为TDMA的矿井移动通信系统无线部分信令的结构设计。
This paper studies the signaling system suitable for wireless link of the digital mine mobile communication system based on TRF6900 single chip, which operates in TDMA mode.
文章论述了基于射频芯片TRF 6900、多址方式为TDMA的矿井移动通信系统无线部分信令的结构设计。
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