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公开(公告)号：US4388501A
公开(公告)日：1983-06-14
申请号：US262456
申请日：1981-05-11
申请人： Omprakash G. Ahuja
发明人： Omprakash G. Ahuja
CPC分类号： H04M3/301 , H04M2203/058
摘要： An audio-visual line test termination device for providing a characteristic signature to the telephone central office and a visual and an audible signal to the customer when a continuity test is made on a subscriber line having a pair of electrically conductive paths includes a miniature audio indicator, a light source and a minimum of associated electrical components to indicate to the central office test operator and the customer that the telephone subscriber line is in operating order. The instant invention may be utilized together with a housing that may be permanently installed across the subscriber line.
摘要翻译： 当在具有一对导电路径的用户线上进行连续性测试时，用于向电话中心局提供特征签名的视听线路测试终端设备和向客户提供视觉和听觉信号包括微型音频指示器 ，光源和至少相关联的电气部件，以向中心局测试运营商和客户指示电话用户线路正在运行。 本发明可以与可以永久地安装在用户线路上的外壳一起使用。
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2.发明授权公开(公告)号：US08300518B2
公开(公告)日：2012-10-30
申请号：US12060653
申请日：2008-04-01
申请人： Alexei Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Gerhard Guenter Theodor Kramer , Carl Jeremy Nuzman , Philip Alfred Whiting
发明人： Alexei Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Gerhard Guenter Theodor Kramer , Carl Jeremy Nuzman , Philip Alfred Whiting
IPC分类号： H04J3/10
CPC分类号： H04M3/18 , H04M3/30 , H04M3/34 , H04M2203/058
摘要： At least one channel is joined to a group of active channels in a communication system by transmitting control signals to configure respective customer premises equipment (CPE) of the active channels into a joining mode of operation, and transmitting a joining signature sequence to CPE of the joining channel over a downstream data signal path of the joining channel. A central office (CO) or other access node of the system receives correlation results from respective active channel CPE, estimates crosstalk from the joining channel into the active channels based on the correlation results, configures a precoder based on the estimated crosstalk, and adds the joining channel to the group of active channels. The channels may comprise respective subscriber lines of a DSL communication system.
摘要翻译： 通过发送控制信号将至少一个信道连接到通信系统中的一组活动信道，以将活动信道的相应客户驻地设备（CPE）配置为加入操作模式，并将加入签名序列发送到 在加入信道的下游数据信号路径上加入信道。 该系统的中心局（CO）或其他接入节点从相应的有源信道CPE接收相关结果，基于相关结果估计从加入信道到有源信道的串扰，基于所估计的串扰配置预编码器， 加入频道到活跃频道组。 信道可以包括DSL通信系统的相应用户线路。
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公开(公告)号：US5018184A
公开(公告)日：1991-05-21
申请号：US548464
申请日：1990-07-03
CPC分类号： H04M3/301 , H04M1/24 , H04M3/303 , H04M2203/058
摘要： Disclosed is a circuit for the automatic testing of channel units such as found in subscriber loop carrier (SLC.RTM.) systems. The circuit is included as part of the remote terminal of the system and performs type tests, power-up tests and routine verification tests. The circuit also monitors the subscriber channel, and connects the subscriber in the event of a ringing signal or an off-hook during a test. The results of the test are sent to a display unit which can be located at the remote terminal and/or the central office.
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4.发明申请公开(公告)号：US20090245081A1
公开(公告)日：2009-10-01
申请号：US12060653
申请日：2008-04-01
申请人： Alexei Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Gerhard Guenter Kramer , Carl Jeremy Nuzman , Philip Alfred Whiting
发明人： Alexei Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Gerhard Guenter Kramer , Carl Jeremy Nuzman , Philip Alfred Whiting
IPC分类号： H04J3/10
CPC分类号： H04M3/18 , H04M3/30 , H04M3/34 , H04M2203/058
摘要： At least one channel is joined to a group of active channels in a communication system by transmitting control signals to configure respective customer premises equipment (CPE) of the active channels into a joining mode of operation, and transmitting a joining signature sequence to CPE of the joining channel over a downstream data signal path of the joining channel. A central office (CO) or other access node of the system receives correlation results from respective active channel CPE, estimates crosstalk from the joining channel into the active channels based on the correlation results, configures a precoder based on the estimated crosstalk, and adds the joining channel to the group of active channels. The channels may comprise respective subscriber lines of a DSL communication system.
摘要翻译： 通过发送控制信号将至少一个信道连接到通信系统中的一组活动信道，以将活动信道的相应客户驻地设备（CPE）配置为加入操作模式，并将加入签名序列发送到 在加入信道的下游数据信号路径上加入信道。 该系统的中心局（CO）或其他接入节点从相应的有源信道CPE接收相关结果，基于相关结果估计从加入信道到有源信道的串扰，基于所估计的串扰配置预编码器， 加入频道到活跃频道组。 信道可以包括DSL通信系统的相应用户线路。
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公开(公告)号：US4852145A
公开(公告)日：1989-07-25
申请号：US223435
申请日：1988-07-22
IPC分类号： H03K17/725 , H04M1/24 , H04M3/30
CPC分类号： H04M3/301 , H03K17/725 , H04M1/24 , H04M2203/058
摘要： A method of locating faults in a telephone system including the steps of connecting antiparallel rectifying switches (ARS's ) that inhibit alternating current (A.C.) flow in one direction but not the other between subscriber equipment and respective telephone company lines, applying an A.C. test signal to a telephone company line and measuring a resulting signal, and determining whether a fault is on the telephone company line or customer equipment based upon the resulting signal. Also disclosed is an ARS that includes a first input and output, a second input and output, and paths between respective inputs and outputs providing low turn-on thresholds in one direction between respective inputs and outputs and high turn-on thresholds in the other direction, the directions of low and high being the same for both sets of inputs and outputs.
摘要翻译： 一种在电话系统中定位故障的方法，包括以下步骤：连接反并联整流开关（ARS），其在一个方向上禁止交流（AC）流，而不是在用户设备和相应的电话公司线之间，将AC测试信号施加到 电话公司线路并测量结果信号，并且基于所得到的信号来确定故障是在电话公司线路还是客户设备上。 还公开了一种ARS，其包括第一输入和输出，第二输入和输出以及相应输入和输出之间的路径，其在相应的输入和输出之间在一个方向上提供低导通阈值，并且在另一个方向上提供高导通阈值 对于两组输入和输出，低和高的方向是相同的。
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公开(公告)号：US06535580B1
公开(公告)日：2003-03-18
申请号：US09606157
申请日：2000-06-29
IPC分类号： H04M124
CPC分类号： H04M3/301 , H04M3/2209 , H04M2201/02 , H04M2203/058
摘要： 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.
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公开(公告)号：US5483573A
公开(公告)日：1996-01-09
申请号：US85581
申请日：1993-06-30
CPC分类号： H04M1/0293 , H01R13/703 , H04M1/24 , H04M3/301 , H04Q1/028 , H01R24/62 , H04M2203/058
摘要： A connector unit (21) for automatically terminating a digital data services (DDS) line whenever a mating modular plug (30) is not inserted into the connector. The connector utilizes a switchable DDS jack (25) that mates with the modular plug (30) for connecting a data-transmit line and a data-receive line of a DDS network (41) to a customer's equipment (45). The connector unit has a maintenance termination circuit (40) with terminating impedances (r, r1, C and C1) and diodes (D and D1). When the plug and jack are not engaged, the maintenance termination circuit is connected to the data-transmit and data-receive lines via the normally closed jack contacts (33 and 34). As the plug and jack are engaged, the plug abuts against and, as movement continues, increasingly opens the jack contacts, causing the maintenance termination circuit to be disconnected from the customer's equipment and to be connected to the DDS network. The diodes are oppositely polarized to provide a signature for testing proper installation of the connector unit. When connected to the DDS network, the terminating impedances provide electrical terminating loads which reduce network noise.
摘要翻译： 每当匹配的模块插头（30）未插入到连接器中时，用于自动终止数字数据服务（DDS）线的连接器单元（21）。 连接器利用与模块化插头（30）相配合的可切换DDS插座（25），用于将数据传输线路和DDS网络（41）的数据接收线路连接到客户的设备（45）。 连接器单元具有终止阻抗（r，r1，C和C1）和二极管（D和D1）的维护终止电路（40）。 当插头和插座未接合时，维护终端电路通过常闭插座触点（33和34）连接到数据传输和数据接收线。 当插头和插座接合时，插头抵靠，并且随着移动继续，越来越多地打开插座触点，导致维护终端电路与客户的设备断开并连接到DDS网络。 二极管相反极化，以提供用于测试连接器单元的正确安装的签名。 当连接到DDS网络时，终端阻抗提供电终端负载，从而降低网络噪声。
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公开(公告)号：US4350849A
公开(公告)日：1982-09-21
申请号：US224914
申请日：1981-01-15
申请人： Omprakash G. Ahuja
发明人： Omprakash G. Ahuja
CPC分类号： H04M3/301 , H04M2203/058
摘要： A varying impedance line test termination device for providing a characteristic signature to the telephone central office when a continuity test is made on a subscriber line having a pair of electrically conductive paths includes a first current path having a first resistor and a capacitor connected in series across the electrically conductive line paths and a second current path having a diode and a voltage breakover device connected in series across the capacitor. If the voltage breakover device is capable of emitting light, a flashing indication will be provided when the subscriber line is being interrogated.
摘要翻译： 一种用于在具有一对导电路径的用户线进行连续性测试时向电话中心局提供特征签名的变化的阻抗线路测试终端设备包括具有第一电阻器和串联连接的电容器的第一电流路径 所述导电线路径和第二电流路径具有串联连接在所述电容器上的二极管和电压断开装置。 如果电压突破装置能够发光，则在询问用户线被询问时将提供闪烁的指示。
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