Multipurpose analog telephony channel test facility method and apparatus
    1.
    发明授权
    Multipurpose analog telephony channel test facility method and apparatus 失效
    多用途模拟电话通道测试设备的方法和装置

    公开(公告)号:US5425075A

    公开(公告)日:1995-06-13

    申请号:US105787

    申请日:1993-08-12

    CPC分类号: H04M3/30 H04M3/08 H04M3/28

    摘要: A method and apparatus for determining whether a telephony system malfunction is caused by defective telephone company trunk lines connected thereto, or caused by defective system equipment. The present invention comprises two double pole double throw relays having connections arranged whereby a pair of telephony equipment interface channels have multiple remote testing capabilities. The present invention performs trunk rolling and/or inter-channel loop back testing under local or remote control.

    摘要翻译: 一种用于确定电话系统故障是由连接到其上的有缺陷的电话公司干线或由系统设备有缺陷引起的方法和装置。 本发明包括两个双极双掷继电器,其具有连接布置,由此一对电话设备接口通道具有多个远程测试能力。 本发明在本地或远程控制下执行中继线滚动和/或通道间回路测试。