According to traffic , call congestion ratio and the number of users , we configured the number of channels and tracks 该系统还设有中继线转接器，可以与外界用户进行电话通信。
Low - voltage switchgear and controlgear assemblies - part 2 : particular requirements for busbar trunking systems busways 低压开关设备和控制装置组件.第2部分:母线中继线系统的特殊要求
Trunk relay : global tone no . allows 2 simultaneously call . capacity of no . of channels can be increase by customer request 中继功能:一个国际号码可以同时两路电话呼入，可以应用户要求增加中继线数量。
Within a switching system , a connection or circuit between inlets and outlets of the same or different switching networks . an intraoffice trunk 在交换系统中，同一或不同交换网络的引入线和引出线之间的连接部分或电路。又称局内中继线。
This requires new kinds of circuit - switching gateways that feature lan interfaces and telephony trunk connections to public networks and pbxs 这就要求用新型的电路交换网关，它们具有局域网接口和与公用网和用户交换机电话中继线连接的特点。
Learn the implications of the “ immutable laws ” which includes service level versus occupancy , the power of pooling principle , and staff versus trunks and network costs 学习“不变原则” ，包括服务水平和使用率，人员凝聚的力量，员工与中继线、网络的成本。
In that sense , it represents a major trend in the exchange network to replace the current 2mbits trunks by stm - 1 links or even faster links 所以，采用stm - 1链路，甚至将来采用速率更高的链路来替代目前的2mbits中继线路作为局间中继线路，是交换网发展的重要方向。
We consider the 155 mbs port most suitable for high capacity switches with thick trunk line bundles , such as tandem switches and interconnected and interworking gateways 将传输网与交换网综合考虑，结合带宽特点，我们认为： 155mbits端口最适合于那些大容量、大中继线束的交换机采用。
Then , the structure of telephone gateway interface and trunk interface are introduced and their functions in telephone gateway are analysed by which a telephone gateway scheme is designed 并着重介绍电话网关接口单元的构成和中继线的概念,分析它们以及语音处理单元在电话网关中的作用,以研究实现电话网关的系统方案。
