radio exchange

The paper introduces optical fibre transmission, digital program-controlled exchange, radio train control communications, pressure maintenance and monitoring for communication cable, speech-sound postbox and other systems.

介绍了京九铁路光缆传输、数字程控交换、无线列车调度通信、通信电缆气压维护监测、语音邮箱等系统。

MIL-STD 188-220 C protocol is a standard for information exchange among military packet radio C ~4 I systems.

MIL-STD188-220C是军用分组无线电C4I系统之间的互操作标准.

As an important part of visual cortex false body, the signal transmitting device can effectively finish in vivo and in vitro data exchange tasks and adopts cable transmission and radio frequency wireless transmission, and the transmission signals can be single-channel signals and can also be multi-path signals.

信号传递装置作为视皮层假体的重要组成部分，可以有效地完成体内体外的数据交互任务，采用有线传输以及射频无线传输，传输的信号可以是单一通道信号也可以是多路信号。

The Applications Based on Soft Exchange IP Telephone in Tianshui Radio-TV Multimedia Information Network

基于软交换的IP电话在天水广电多媒体信息网的应用