Technical requirements and test methods for exchangers of operating services in manual toll telephone switching equipments 人工长途电话交换设备营业处交换机技术要求和测试方法
Digital program - controlled telephone switching system project ( 6 , 000 lines and trunks ) in linton telecom bureau , shaanxi province 陕西电信临潼邮电局六千门程控交换机开通工程。
Technical requirements and test methods for toll connecting boards and special boards in manual toll telephone switching equipments 人工长途电话交换设备长途接续台专线台技术要求和测试方法
But then 2 mbits pdh links were still be used in connections between the networks and the telephone switches 当sdh最初引入到传输网络时， 2mbits的pdh链路仍然被用于网络和电话交换机的连接。
The up - to - date call center include many kinds of advanced technologies : telephone switch 、 computer tech 、 cti and in 最新的客户服务中心包括许多先进技术：电话交换、计算机技术、 cti和智能网技术。
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
Technical requirements and test methods for ringing , power sources , alarm and distribuing frame in manual toll telephone switching equipments 人工长途电话交换设备铃流电源告警配线设备技术要求和测试方法
In a telephone switching system , inability to make a connection or obtain a service because the devices needed for the connection or service are in use 在电话交换系统中,由于需要连接或服务的设备正在使用而不能连通或得到服务。
Telephone switching equipment is alcatel s1240 system with 23 , 000 common telephones and isdn pra 20 as well as isdn pra 500 equipped with voice servers 交换设备为阿尔卡特alcatel s1240交换系统，共有一般门号23000门， isdnpra20路， isdnpra500路可提供语音服务。
This paper discusses the design and achievement of simulating training system of c & c08 stored program controlled telephone switch ( spcts ) which is order - based maintaining and operation system 本文探讨了基于命令的c & c08数字程控交换机的仿真训练系统的设计与实现。
