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Structure for electronic trunk line connected communication system - has selectors for local and trunk lines with three and two link lines respectively
Structure for electronic trunk line connected communication system - has selectors for local and trunk lines with three and two link lines respectively
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机译:用于电子干线连接的通信系统的结构-具有用于本地和干线的选择器,分别具有三个和两个链接线
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摘要
An electronic trunk line connected communication system comprises a central unit, which includes a number of call boxes. Each of these has a logic unit connection to the local line, and another logic unit feeding the trunk line. The latter has two bus-lines connected between it and the trunk line selector. The local line circuit arrangement has three bus-lines between it and the local line selector. Selector components are provided for the code number of the trunk line called and the subscriber number required.
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