Self-diagnosis of loop start and ground start trunk interfaces
    1.
    发明公开
    Self-diagnosis of loop start and ground start trunk interfaces 失效
    用于连接与循环开始和Ertstartoperation电缆接口自我诊断。

    公开(公告)号:EP0451711A2

    公开(公告)日:1991-10-16

    申请号:EP91105363.5

    申请日:1991-04-04

    IPC分类号: H04M3/28 H04M7/00

    CPC分类号: H04M3/28 H04M1/24 H04M7/0096

    摘要: Method and apparatus for sectionalization and self--diagnosis of loop start and ground start trunk interfaces (10) without intervention from host telephone company equipment. The inventive method entails the use of an isolation relay (110) in the trunk circuit to isolate the trunk circuit electrically from the physical medium and to apply various signals to portions of the isolated trunk circuit to carry out specific self-diagnostic tests.

    摘要翻译: 对分节和自我的方法和装置 - 循环启动和接地的诊断开始中继接口,而不从主机电话公司设备的干预。 本发明的方法需要在中继电路中使用的隔离继电器的到中继线电路电从物理介质隔离并施加各种信号的分离的中继电路的部分,以进行特定的自诊断测试。