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1.发明授权公开(公告)号：US07190716B2
公开(公告)日：2007-03-13
申请号：US10071980
申请日：2002-02-06
IPC分类号： H04B1/38
CPC分类号： H04M19/006 , H04M3/30 , H04M2203/205
摘要： A Digital Subscriber Line (DSL) network for improving the transmission of DSL signals includes a plurality of local loops for transmission of upstream and downstream DSL signals, control signals, and Direct Current (DC) power, a plurality of loop extenders with communications, control, and diagnostic functionality for amplifying the DSL signals, a loop extender communications/power supply for receiving the DC power and control signals, providing DC power to the plurality of loop extenders, and broadcasting the received control signals to the plurality of loop extenders, and a central office controller/power supply for controlling access to the plurality of local loops and controlling the plurality of loop extenders.
摘要翻译： 用于改善DSL信号传输的数字用户线路（DSL）网络包括用于传输上游和下游DSL信号，控制信号和直流（DC）功率的多个本地环路，具有通信的多个环路扩展器，控制 以及用于放大DSL信号的诊断功能，用于接收DC功率和控制信号的环路扩展器通信/电源，向多个环路扩展器提供DC电力，以及将接收到的控制信号广播到多个环路延伸器，以及 用于控制对多个本地环路的访问并控制多个环路扩展器的中心局控制器/电源。
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2.发明申请公开(公告)号：US20020106076A1
公开(公告)日：2002-08-08
申请号：US10071980
申请日：2002-02-06
IPC分类号： H04M001/00 , H04M009/00
CPC分类号： H04M19/006 , H04M3/30 , H04M2203/205
摘要： A DSL network for improving the transmission of DSL signals includes a plurality of local loops for transmission of upstream and downstream DSL signals, control signals, and DC power, a plurality of loop extenders with communications, control, and diagnostic functionality for amplifying the DSL signals, a loop extender communications/power supply for receiving the DC power and control signals, providing DC power to the plurality of loop extenders, and broadcasting the received control signals to the plurality of loop extenders, and a central office controller/power supply for controlling access to the plurality of local loops and controlling the plurality of loop extenders.
摘要翻译： 用于改善DSL信号传输的DSL网络包括用于传输上游和下游DSL信号，控制信号和DC电力的多个本地环路，具有用于放大DSL信号的通信，控制和诊断功能的多个环路扩展器 ，用于接收直流电力和控制信号的环路延长器通信/电源，向多个环路扩展器提供直流电力，以及将所接收的控制信号广播到多个环路扩展器;以及中心局控制器/电源，用于控制 访问多个本地环路并控制多个循环扩展器。
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公开(公告)号：US4607141A
公开(公告)日：1986-08-19
申请号：US586531
申请日：1984-03-05
申请人： Ian A. Schorr
发明人： Ian A. Schorr
CPC分类号： H04M19/006
摘要： This disclosure depicts an active network for providing a virtual impedance to a voice frequency loaded pair having tip and ring terminals. The network comprises means for providing a predetermined capacitance between the tip terminal and ground and between the ring terminal and ground and has a variable resistive means. The means has a first input operatively connected to the tip terminal and a second input operatively connected to the ring terminal and also has first and second outputs. First and second fixed resistive means are operatively connected between the first output and the tip terminal and the second output and the ring terminal, respectively. The value of the predetermined capacitance is determined by the first and second fixed resistive means and the variable resistive means in the means for providing a predetermined capacitance.
摘要翻译： 该公开描述了用于向具有尖端和环形终端的语音加载对提供虚拟阻抗的活动网络。 网络包括用于在尖端端子与地之间以及环形端子与地之间提供预定电容并具有可变电阻装置的装置。 所述装置具有可操作地连接到所述尖端端子的第一输入端和可操作地连接到所述环形端子的第二输入端，并且还具有第一和第二输出端。 第一和第二固定电阻装置分别可操作地连接在第一输出端和尖端端子与第二输出端和环形端子之间。 预定电容的值由用于提供预定电容的装置中的第一和第二固定电阻装置和可变电阻装置确定。
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公开(公告)号：US3992591A
公开(公告)日：1976-11-16
申请号：US571868
申请日：1975-04-25
申请人： Edwin Coy Ingle
发明人： Edwin Coy Ingle
CPC分类号： H04M19/006
摘要： Transmission and signaling range of a telephone transmission line is extended by controllably inserting boost potentials into the line to series aid an applied central office battery. Insertion of the potentials is realized by sensing the direction of current flow in the line and switching a corresponding potential into the line. Optical couplers, each including a light emitting diode and an associated phototransistor, are employed as the line current sensing elements and switching elements.
摘要翻译： 电话传输线的传输和信令范围通过可控制地将升压电位插入线路来扩展，以串联辅助应用的中心局电池。 通过感测线中的电流流动的方向并将相应的电位切换到线中来实现电位的插入。 采用各自包括发光二极管和相关光电晶体管的光耦合器作为线电流感测元件和开关元件。
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公开(公告)号：US3898389A
公开(公告)日：1975-08-05
申请号：US46680474
申请日：1974-05-03
申请人： COMMUNIC MFG
CPC分类号： H04M19/006
摘要： A telephone loop extending circuit for aiding central office battery. There are first and second pairs of input/output terminals and first and second voltage insertion circuits corresponding to the first and second pairs of terminals. Each insertion circuit has a path for current flow coupled between the corresponding pair of terminals. Each insertion circuit has a voltage source, a controllable switch operative when enabled for switching the voltage source between terminals of the corresponding terminal pair in first and second directions of polarity and a sensing circuit for sensing an applied current flow through the corresponding path in first and second directions and responsive to such sensing for enabling the controllable switches to switch the voltage source, respectively, in the first direction or in the second direction of polarity. Additionally included is a circuit operative in response to a rapid reversal in polarity of an applied voltage between two terminals, one from each of the terminal pairs, while the voltage source is coupled in one direction of polarity for enabling the controllable switch in either of the insertion circuits to reverse the polarity in which the corresponding voltage source is coupled in between terminals of the corresponding terminal pair.
摘要翻译： 用于协助中心局电池的电话回路延长电路。 存在对应于第一和第二对端子的第一和第二对输入/输出端子和第一和第二电压插入电路。 每个插入电路具有用于在相应的一对端子之间耦合的电流的路径。 每个插入电路具有电压源，当可用于在第一和第二极性方向上相应的端子对的端子之间切换电压源时可操作的可控开关和感测电路，用于感测通过第一和第二极性对应的路径施加的电流，以及 第二方向并且响应于这种感测，使得可控开关分别在第一方向或第二极性方向上切换电压源。 另外包括的电路是响应于两个端子之间的施加电压的极性的快速反转而起作用的电路，一个来自每个端子对，而电压源在一个极性方向上耦合，以使得可控开关在 插入电路使相应端子对的端子之间的相应电压源耦合的极性反转。
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公开(公告)号：US3843844A
公开(公告)日：1974-10-22
申请号：US22539872
申请日：1972-02-11
发明人： SCHUMPERLI A
CPC分类号： H04M19/006 , H04Q3/00
摘要： Circuit apparatus is provided for extending the allowable distance between the subscriber''s loop and the central office. To provide this feature, the circuits sense a subscriber loop line closure to add an increased voltage for the conversation path and improved supervisory signalling. With the increased voltage, the current to the subscriber''s conversation path is maintained at a constant level. Further additional circuits such as a bidirectional voice frequency repeater, pulse correction circuits, and supervisory control circuits operative at the increased voltage may be connected into the conversation path. With reverse battery signalling, the polarity is sensed to activate the current regulation. On a call to the subscriber loop, the ringing signals are bypassed until the call is answered.
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公开(公告)号：US3828139A
公开(公告)日：1974-08-06
申请号：US29992472
申请日：1972-10-24
申请人： LORAIN PROD CORP
发明人： CHAMBERS C
CPC分类号： H04M19/006 , H04M3/30
摘要： A circuit for automatically disconnecting circuitry such as voltage booster circuitry from a subscriber line to prevent such circuitry from interfering with the measurement of voltage and current on that line. The circuit includes booster disconnect switches which, in a first operative state, connect the voltage booster circuitry in aiding relationship to current flow through the subscriber line and which, in a second operative state, disconnect the voltage booster circuitry from the line and substitute therefore one or more current bypass conductors. A control circuit responsive to both the voltage across and current through the line controls the disconnect switches, as required, to establish the first operative state thereof when the subscriber line is being used by a subscriber and to establish the second operative state thereof when the subscriber line is being tested in either a high voltage-low current mode or a low voltage-high current mode.
摘要翻译： 用于从用户线路自动断开诸如升压电路的电路的电路，以防止这种电路干扰该线路上的电压和电流的测量。 该电路包括升压器断开开关，其在第一操作状态下将升压电路与辅助关系连接到通过用户线的电流，并且在第二操作状态下，将升压电路与线路断开，并由此替代一个 或更多的当前旁路导体。 响应于两端的电压和通过线路的电流的控制电路根据需要控制断开开关，以便当用户线由用户使用时建立其第一操作状态，并且当用户建立其第二操作状态时 线路正在高压低电流模式或低电压 - 高电流模式下测试。
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公开(公告)号：US3784756A
公开(公告)日：1974-01-08
申请号：US3784756D
申请日：1972-12-15
发明人： NEMCHIK J
IPC分类号： H04M19/00
CPC分类号： H04M19/006
摘要： This disclosure relates to a range extender having a through transmission path, a voice transmission path including a repeater, a relay for transferring back and forth between paths and a dual mode, loop current detector. In the idle state, the current detector is in a ''''slow'''' mode for the purpose of preventing (spurious) operation of the detector, except in response to an off-hook current flow. The transfer relay connects the repeater to the loop immediately after an off-hook is detected and the current detector is switched to its ''''fast'''' mode in preparation for dialing pulsing. The repeater normally remains connected to the loop for the duration of the call, even over dial pulsing. Dial pulsing is therefore repeated via the repeater, and not shunt aided. The dial pulses are detected by the fast current detector and the office loop is opened and closed through the repeater, which, from the office side, looks like a low resistance (1K) to low frequencies.
摘要翻译： 本公开涉及一种具有通过传输路径的扩展器，包括中继器的语音传输路径，用于在路径之间来回传送的继电器和双模式环路电流检测器。 在空闲状态下，除了响应于摘机电流之外，电流检测器处于“慢”模式，以防止（杂散）检测器的操作。 传输继电器在检测到摘机后立即将中继器连接到环路，并且当前检测器切换到“快速”模式以准备拨号脉冲。 中继器通常在呼叫期间保持连接到环路，即使通过拨号脉冲。 因此，拨号脉冲通过中继器重复，不能分流辅助。 拨号脉冲由快速电流检测器检测，办公室环路通过中继器打开和关闭，中继器从办公室侧看起来像低电阻（1K）到低频。
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公开(公告)号：US3514543A
公开(公告)日：1970-05-26
申请号：US3514543D
申请日：1968-03-29
申请人： HUBBELL INC HARVEY
发明人： RAE COLIN T
CPC分类号： H04M19/006 , Y10T307/839
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公开(公告)号：US3166642A
公开(公告)日：1965-01-19
申请号：US16102061
申请日：1961-12-21
发明人： ABBOTT HENRY H
CPC分类号： H04Q1/36 , H03F3/62 , H04B3/42 , H04M1/60 , H04M19/006
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