Distributor for a centrally controlled telephone switching system
    1.
    发明授权
    Distributor for a centrally controlled telephone switching system 失效
    用于中央控制电话切换系统的分配器

    公开(公告)号:US3794777A

    公开(公告)日:1974-02-26

    申请号:US3794777D

    申请日:1972-06-29

    CPC classification number: H04Q3/545

    Abstract: A distributor is disclosed for a centrally controlled telephone exchange enabling the control of bistables distributed in groups. The distributor receives from the central unit for a group of bistables to be controlled a control data item indicating the bistables to be set in position 1 and 0, and an inhibition data item indicating the bistables whose position must remain unchanged and serving to mask the elements of the control data corresponding to these bistables. The central unit function is thus limited to the elaboration and to the transmission only of the control data elements intended to certain components of an addressed group.

    Abstract translation: 公布了一种中央控制电话交换机的经销商,可以控制分组的双体。 分配器从中央单元接收要控制的一组双稳态控制一个控制数据项,指示要设置在位置1和0的双稳态,以及表示其位置必须保持不变并用于屏蔽元件的双稳态的禁止数据项 对应于这些双稳态的控制数据。 因此,中央单元功能仅限于针对寻址组的某些组件的控制数据元素的阐述和传输。

    Line finder for a common control telephone exchange
    2.
    发明授权
    Line finder for a common control telephone exchange 失效
    用于通用控制电话交换机的线路探测器

    公开(公告)号:US3760113A

    公开(公告)日:1973-09-18

    申请号:US3760113D

    申请日:1972-01-26

    CPC classification number: H04Q3/545

    Abstract: Subscribers'' line circuits and a linefinder are disclosed for use in a common control telephone exchange to determine the status of subscriber lines. Biasing potentials and switches in the line circuit together with logic circuits in association with the linefinder and the line circuits enable the combination to identify lines requesting service and those in faulty operating condition.

    Abstract translation: 用户线路电路和线路接收机被公开用于公共控制电话交换机以确定用户线路的状态。 与线路电路和线路电路相关联的逻辑电路中的线路电路中的偏置电位和开关使得组合能够识别请求服务的线路和处于故障工作状态的线路。

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