【摘要】 利用多信道共用原理 ,研制了电话线路扩容器 ;设计了交换机侧扩容器和用户侧扩容器的硬件和软件 ;对多信道共用的电话线路配置理论进行了研究 ,并对增加内部通话功能后扩容用户的呼损进行了分析更多还原

【Abstract】 The telephone line expanding devices which are based on the principle of the multi channels share are discussed in the paper.The devices include the switch side one and the user side one.The hardware and software of the devices are designed.The theory of the configuration of shared telephone lines is researched and the call loss of the users is analyzed after inner talk function is enhanced.更多还原