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2. 发明授权

US4018997A Pluggable key set telephone cross connect device 失效
标题翻译：可插拔钥匙套电话交叉连接装置
公开(公告)号：US4018997A
公开(公告)日：1977-04-19
申请号：US618666
申请日：1975-10-01
申请人： Charles Donald Hoover , Jared Nathan Worman
发明人： Charles Donald Hoover , Jared Nathan Worman
IPC分类号： H04M1/02 , H04M9/00 , H04Q1/02
CPC分类号： H04M1/02 , H04M9/005
摘要： A device for selectively interconnecting a plurality of telephone key sets with a number of incoming telephone lines is disclosed. The device facilitates rapid and easy cross connecting of telephone key sets on specific premises with selected incoming lines without the requirement for the work to be accomplished by skilled technicians. The subject device includes a terminal station which is interconnected between incoming lines and a plurality of individual key sets located within a particular prescribed area. The interconnection of the individual sets with incoming lines is accomplished by cross connecting connectors for the individual key sets and connectors for the lines with jumper cables. The jumper cables have four or more conductors with an extra conductor being used when it is desired to have the designated key set ring.
摘要翻译：公开了一种用于选择性地将多个电话密钥组与多个输入电话线互连的设备。该设备有助于将特定场所的电话密钥组与所选择的输入线快速且容易地交叉连接，而不需要熟练技术人员完成工作。主体装置包括在输入线与位于特定规定区域内的多个单独密钥组互连的终端站。单个组合与输入线的互连通过用于单个键组件的交叉连接器和用于具有跳线电缆的线路的连接器来实现。当希望具有指定的键盘环时，跳线电缆具有四根或更多根导体，并使用额外的导体。

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