A telephone cable from a local exchange to a central exchange.
一种从本地交换局到中心交换局的电话电缆。
With basic LAN switches, intelligence stays in the core network.
利用基本的局域网交换机，智能留在核心网络中。
Nodes: the switching centers in the network o
节点:网络中的交换中心。
Hong Kong Internet Exchange (HKIX)
香港互联网交换中心(HKIX)
digital computer switching center
数字计算机交换中心
Health Teaching and Learning Materials Clearing House
保健教学材料交换中心
automatic electronic switching center
自动电子数据交换中心
automatic electronic data-switching center
自动电子资料交换中心
store-and-forward message switching center
存储转发信息交换中心
Mobile Switching Center (MSC) - 8
移动交换中心 (MSC) -- 8
Sub-contracting exchange centre
分包合同情报交换中心
Bell introduces crossbar central office switches.
贝尔实验室纵横中央局交换机问世。
Application of the second and third level exchange technology in the campus LAN;
校园局域网中二、三层交换技术的应用
Trading Centers and the Origin of the Earliest City in China;
经济交换中心与中国早期城市的起源
cross office switching time
交叉电话局转换时间
common battery exchange
共电制电话交换机局
gentex exchange
公众电报电路交换局
"Because relatively few telephones can provide contact without switching from a multitude of local lines to a much smaller number of trunks between exchanges,"
本局用户线路是大量的，而交换局之间的中继线路是少量的，没有交换只能接通相对少量的电话。