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公开(公告)号：US6026145A
公开(公告)日：2000-02-15
申请号：US211338
申请日：1998-12-14
摘要： An automated telephone line test system that is well suited for determining the location of faults within a telephone network. The telephone line test system uses time domain reflectometry to aid in locating the faults. The time domain reflectometry unit is connected through a switch in the network so that the time domain reflectometry unit can be connected to multiple lines without human intervention. Parameters of the time domain reflectometry signals are controlled so that reflections from the switch do not interfere with measurement of parameters on the faulty line.
摘要翻译： 一种自动化电话线路测试系统，非常适用于确定电话网络内故障的位置。 电话线测试系统使用时域反射测量来帮助定位故障。 时域反射单元通过网络中的交换机连接，使得时域反射单元可以连接到多条线路而无需人为干预。 控制时域反射信号的参数，使得来自开关的反射不会干扰故障线路上的参数测量。
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公开(公告)号：US5699402A
公开(公告)日：1997-12-16
申请号：US311802
申请日：1994-09-26
摘要： A line test system for diagnosing and segmenting faults in a switched telephone network. The system includes a remote measurement unit installed at a switch and a test system controller. The test system controller stores data about operating parameters of each of the subscriber lines when they are believed to be free of faults. When a fault is reported, the parameters are measured again. By comparison of the measured parameters with the stored parameters, the fault can be segmented between the premise and the network. Segmentation is performed using knowledge based analysis techniques. The actual source of the fault once it is repaired is also stored by the test system controller. This historical information is used to improve the accuracy of the knowledge based analysis techniques used for segmentation.
摘要翻译： 一种用于诊断和分段交换电话网络故障的线路测试系统。 该系统包括安装在开关和测试系统控制器上的远程测量单元。 当它们被认为没有故障时，测试系统控制器存储关于每个用户线路的操作参数的数据。 报告故障时，再次测量参数。 通过比较测量参数与存储的参数，故障可以在前提和网络之间进行分段。 使用基于知识的分析技术进行分割。 修复后的故障实际来源也由测试系统控制器存储。 该历史信息用于提高用于分割的基于知识的分析技术的准确性。
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公开(公告)号：US06895081B1
公开(公告)日：2005-05-17
申请号：US09294563
申请日：1999-04-20
申请人： Kurt E. Schmidt , David J. Groessl , Yun Zhang
发明人： Kurt E. Schmidt , David J. Groessl , Yun Zhang
IPC分类号： H04L29/14 , G06Q10/06 , H04B3/46 , H04L1/00 , H04L25/02 , H04M3/00 , H04M3/30 , H04M11/00 , H04Q3/42 , H04M1/24 , H04M3/08 , H04M3/22
CPC分类号： G06Q10/06 , H04B3/46 , H04L1/0003 , H04L25/022 , H04M3/306 , Y02D50/10
摘要： A method characterizes a customer line for data transmission. The method includes measuring electrical properties of the customer line from a central location, identifying a line model from the measurements, and identifying a modem model for a modem selected for use with the customer line. The modem model gives performance data for the selected modem. The method also predicts performance data for the customer line when operated with the selected modem by combining the line and modem models.
摘要翻译： 一种用于数据传输的客户线路的特征。 该方法包括从中心位置测量客户线路的电气特性，从测量中识别线路模型，以及为选择用于客户线路的调制解调器识别调制解调器模型。 调制解调器模型给出所选调制解调器的性能数据。 该方法还通过组合线路和调制解调器模型来预测用所选调制解调器操作时客户线路的性能数据。
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公开(公告)号：US07263174B2
公开(公告)日：2007-08-28
申请号：US11060904
申请日：2005-02-18
申请人： Kurt E. Schmidt , David J. Groessl , Yun Zhang
发明人： Kurt E. Schmidt , David J. Groessl , Yun Zhang
CPC分类号： G06Q10/06 , H04B3/46 , H04L1/0003 , H04L25/022 , H04M3/306 , Y02D50/10
摘要： A method characterizes a customer line for data transmission. The method includes measuring electrical properties of the customer line from a central location, identifying a line model from the measurements, and identifying a modem model for a modem selected for use with the customer line. The modem model gives performance data for the selected modem. The method also predicts performance data for the customer line when operated with the selected modem by combining the line and modem models.
摘要翻译： 一种用于数据传输的客户线路的特征。 该方法包括从中心位置测量客户线路的电气特性，从测量中识别线路模型，以及为选择用于客户线路的调制解调器识别调制解调器模型。 调制解调器模型给出所选调制解调器的性能数据。 该方法还通过组合线路和调制解调器模型来预测用所选调制解调器操作时客户线路的性能数据。
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公开(公告)号：US06590962B1
公开(公告)日：2003-07-08
申请号：US09598595
申请日：2000-06-21
申请人： David J. Groessl , Kurt E. Schmidt , Yun Zhang
发明人： David J. Groessl , Kurt E. Schmidt , Yun Zhang
IPC分类号： H04M124
摘要： A method and apparatus to non-interactively test telephone networks and more specifically to localize faults such as resistive faults in the subscriber loop of the telephone network is presented. The method and apparatus determine whether the fault is in the tip line or ring line of a phone line. The existence of a fault voltage, if any, is also determined. The resistance of the tip line to ground and the resistance of the ring line to ground is measured. A fault resistance is calculated from this information, from which the location of the fault is determined.
摘要翻译： 提出了一种非交互式测试电话网络的方法和装置，更具体地说是定位电话网络的用户环路中的电阻性故障等故障。 该方法和装置确定故障是否在电话线的尖端线或环线上。 还确定了故障电压的存在（如果有的话）。 测量尖端线对地的电阻和环线对地的电阻。 根据该信息计算故障电阻，确定故障位置。
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公开(公告)号：US5870451A
公开(公告)日：1999-02-09
申请号：US965360
申请日：1997-11-06
摘要： A line test system for diagnosing and segmenting faults in a switched telephone network. The system includes a remote measurement unit installed at a switch and a test system controller. The test system controller stores data about operating parameters of each of the subscriber lines when they are believed to be free of faults. When a fault is reported, the parameters are measured again. By comparison of the measured parameters with the stored parameters, the fault can be segmented between the premise and the network. Segmentation is performed using knowledge based analysis techniques. The actual source of the fault once it is repaired is also stored by the test system controller. This historical information is used to improve the accuracy of the knowledge based analysis techniques used for segmentation. The line test system is capable of detecting the presence of high impedance ringers. Information on high impedance ringers is used to distinguish between lines that contain open circuit faults and lines that are terminated with high impedance ringers.
摘要翻译： 一种用于诊断和分段交换电话网络故障的线路测试系统。 该系统包括安装在开关和测试系统控制器上的远程测量单元。 当它们被认为没有故障时，测试系统控制器存储关于每个用户线路的操作参数的数据。 报告故障时，再次测量参数。 通过比较测量参数与存储的参数，故障可以在前提和网络之间进行分段。 使用基于知识的分析技术进行分割。 修复后的故障实际来源也由测试系统控制器存储。 该历史信息用于提高用于分割的基于知识的分析技术的准确性。 线路测试系统能够检测高阻抗振铃器的存在。 关于高阻抗振铃器的信息用于区分包含开路故障的线路和使用高阻抗振铃器终止的线路。
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公开(公告)号：US07042983B2
公开(公告)日：2006-05-09
申请号：US10399641
申请日：2001-10-19
摘要： A method and system for qualifying telephone lines for high speed data services. The system takes measurements on a line under test and matches those measurements to a model of a line. The model of the line is used to predict whether the line will support data services at a particular level. If the model of the line includes a service affecting condition that is removable from the line, a new model is created reflecting the line as it would appear with the service affecting condition removed. The new model is then used to predict performance. If the required performance level is predicted based on the new model, the line is categorized as a line that can not support the required level of data services, but could if repaired. In this way, an accurate and useful prediction of line performance is provided.
摘要翻译： 一种用于高速数据业务电话线合格的方法和系统。 系统对被测试线路进行测量，并将这些测量值与线路模型进行匹配。 该行的模型用于预测该行是否将支持特定级别的数据服务。 如果该行的模型包含可从行中移除的服务影响条件，则将创建一个反映行的新模型，因为它将在删除服务影响条件时显示。 然后使用新模型来预测性能。 如果基于新模型预测所需的性能级别，则该行被分类为不能支持所需级别的数据服务的行，但是如果被修复。 以这种方式，提供了线性能的准确有用的预测。
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