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    • 7. 发明授权
    • Subscriber loop testing in a fiber-to-the-curb communications network
    • 光纤到路由通信网络中的用户环路测试
    • US5301050A
    • 1994-04-05
    • US83787
    • 1993-06-25
    • Richard M. CzerwiecJoseph E. Sutherland
    • Richard M. CzerwiecJoseph E. Sutherland
    • H04B10/272H04M3/30H04B10/08H04B10/00
    • H04M3/30H04B10/272H04M3/301H04M3/303
    • In fiber telecommunications network where an optical fiber is extended to the subscriber's neighborhood, mechanized loop testing is performed by a test unit located in a network unit in the subscriber's neighborhood. The test unit is responsive to commands from a controller located in the network unit to perform metallic line tests on the lines extending to the subscriber. Test results are stored in a memory associated with the controller in the network unit. Upon receipt of a test request from a central test controller, the controller within the network unit determines if there is sufficient time to perform the test; if so, a new test is performed and the results are conveyed back to the central test controller controller. If sufficient time is not available, the results of the last performed routine test contained in the memory are transmitted back to the central test controller. The test results sent back to the central test controller are conveyed firstly in the form of a particular four-digit code, which code is interpreted at a remote terminal and converted to a specific resistive signature which is conveyed back to the central test controller. The specific resistive signature is interpreted by the standard remote measurement unit located in a remote terminal.
    • 在光纤延伸到用户邻域的光纤电信网络中,机器化环路测试由位于用户邻域的网络单元中的测试单元执行。 测试单元响应来自位于网络单元中的控制器的命令,以对延伸到订户的线路执行金属线路测试。 测试结果存储在与网络单元中与控制器相关联的存储器中。 在从中央测试控制器接收到测试请求后,网络单元内的控制器确定是否有足够的时间进行测试; 如果是这样,则执行新的测试,并将结果传送回中央测试控制器控制器。 如果没有足够的时间,则包含在存储器中的最后执行的例行测试的结果被传送回中央测试控制器。 发送回中央测试控制器的测试结果首先以特定的四位代码的形式传送,该代码在远程终端被解释并转换成特定的电阻签名,该电阻签名被传送回中央测试控制器。 特定的电阻签名由位于远程终端的标准远程测量单元来解释。