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    • 6. 发明申请
    • SIGNATURE DEVICE FOR HOME PHONELINE NETWORK DEVICES
    • 家用电话网络设备的签名设备
    • WO01008390A1
    • 2001-02-01
    • PCT/US2000/020409
    • 2000-07-27
    • H04M3/30H04M11/06
    • H04M3/301H04M3/2209H04M2201/02H04M2203/058
    • Signature apparatus and techniques that make home networking devices, e.g., in-Home Phoneline Network (herein referred to as "HPN") devices, isolation filters, network interface devices, etc., detectable by commercially available metallic loop termination (MLT) test equipment. The invention also provides a method of testing a telephone line for the existence of a signature circuit identifying a home network. The home network signature circuit includes a series combination of a voltage breakdown device (e.g., Zener diodes) and an impedance (e.g., 200K ohm resistor). In operation, the home network signature circuit shunts the tested subscriber line loop with a voltage-dependent impedance in the presence of an appropriate test voltage exceeding 80 volts. Different high voltage thresholds of the voltage breakdown portion and/or different resistance values of the shunt impedance can be implemented in the home network signature device to produce uniquely detectable signatures. In this way, it is possible to remotely differentiate between various types of home network devices if the various types of home network devices include known voltage thresholds and/or shunt impedances. Loop qualification for services such as VDSL could include an automated remote scan from a central office for home network signature devices being served by telephone lines, e.g., existing in the same binder. To sense each of the parallel connected home network signature devices, the test equipment may preferably be made sensitive to the threshold voltage, not to the shunt impedance. The home network signature circuit may simply reside between the tip and ring on an HPN adapter. The home network signature circuit is preferably functional whether or not the network device is powered up. The home network signature circuit, in response to the activation energy signal exceeding a predetermined threshold above 80 volts, will drive an appropriate current back onto the telephone line.
    • 使用市售的金属环路终端(MLT)测试设备可检测的家庭网络设备的签名设备和技术,例如家庭电话网络(以下称为“HPN”)设备,隔离滤波器,网络接口设备等) 。 本发明还提供了一种测试电话线路的方式,用于存在识别家庭网络的签名电路。 家庭网络签名电路包括电压击穿装置(例如齐纳二极管)和阻抗(例如,200K欧姆电阻器)的串联组合。 在操作中,家庭网络签名电路在具有超过80伏特的适当测试电压的情况下,以经电压相关的阻抗来分流测试的用户线环路。 可以在家庭网络签名装置中实现电压击穿部分的不同高压阈值和/或并联阻抗的不同电阻值,以产生唯一可检测的签名。 以这种方式,如果各种类型的家庭网络设备包括已知的电压阈值和/或并联阻抗,则可以远程区分各种类型的家庭网络设备。 用于诸如VDSL之类的服务的循环限定可以包括来自中心局的自动远程扫描,用于由电话线服务的家庭网络签名设备,例如存在于相同的绑定器中。 为了检测每个并联的家庭网络签名设备,测试设备可以优选地对阈值电压敏感,而不是分流阻抗。 家庭网络签名电路可以简单地驻留在HPN适配器上的尖端和环之间。 无论网络设备是否上电,家庭网络签名电路都是有效的。 归属网络签名电路响应于超过80伏特的预定阈值的激活能量信号将驱动合适的电流回到电话线上。