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    • 8. 发明授权
    • Systems and methods for determining the status of telephone lines
    • 确定电话线状态的系统和方法
    • US07295655B2
    • 2007-11-13
    • US10672819
    • 2003-09-26
    • Charles R. Harrison
    • Charles R. Harrison
    • H04M1/24H04M3/08H04M3/22
    • H04M3/08
    • Systems and methods for detecting a status of a telephone line. Some of the systems include a telecommunications system which comprises a dial tone tester integrated with a demarcation device. Such dial tone testers can include a visual device or an audible device indicative of line status. Various methods are also described for detecting the status of a telephone line. Such methods can include receiving a response originating from a customer premises, viewing a demarcation device located at the customer premises, and determining line status from a dial tone tester integrated with the demarcation device.
    • 用于检测电话线状态的系统和方法。 一些系统包括电信系统,其包括与分界设备集成的拨号音测试仪。 这种拨号音测试器可以包括指示行状态的视觉设备或可听设备。 还描述了用于检测电话线的状态的各种方法。 这样的方法可以包括接收来自客户驻地的响应,查看位于客户驻地的分界设备,以及从与分界设备集成的拨号音测试仪确定线路状态。