Device and method for suppressing DSL signal echo induced by bridgetap
    1.
    发明授权
    Device and method for suppressing DSL signal echo induced by bridgetap 有权
    抑制由bridgetap引起的DSL信号回波的装置和方法

    公开(公告)号:US08041011B2

    公开(公告)日:2011-10-18

    申请号:US11536113

    申请日:2006-09-28

    CPC classification number: H04M3/002 H04M3/007 H04M3/304

    Abstract: A digital signal line echo reduction adaptor is configured to connect adjacent to a first end of a bridgetap line. The bridgetap line has a second end connected to a carrier communication line. The digital signal line echo reduction adaptor reduces an effect of echo from the bridgetap line on a rate of data transmission over the carrier communication line.

    Abstract translation: 数字信号线回波减小适配器被配置为在bridgetap线的第一端附近连接。 桥接线具有连接到载波通信线路的第二端。 数字信号线回波减少适配器减少了来自bridgetap线的回波对载波通信线路上的数据传输速率的影响。

    Device for measuring echo return loss in a two-two wire line system
    2.
    发明授权
    Device for measuring echo return loss in a two-two wire line system 失效
    用于测量二线制线系统回波回波损耗的装置

    公开(公告)号:US5943392A

    公开(公告)日:1999-08-24

    申请号:US788294

    申请日:1997-01-24

    CPC classification number: H04B3/493

    Abstract: The present invention is directed to an adaptor for measuring an echo return loss in a communication system. The adaptor includes two transformers, each having a primary winding and two secondary windings. The secondary windings are cross-connected to form first and second out of phase circuits. The first circuit includes impedance elements which match an impedance of an external device. When the external device is attached to the second circuit, the first and second circuits are schematically equivalent, albeit out of phase. When an oscillation signal is input to one transformer, the matched impedance and out-of-phase connection of the secondary windings cancel the signal such that only an echo signal is output by the other transformer.

    Abstract translation: 本发明涉及一种用于测量通信系统中的回波回波损耗的适配器。 适配器包括两个变压器,每个具有初级绕组和两个次级绕组。 次级绕组交叉连接形成第一和第二异相电路。 第一电路包括与外部设备的阻抗匹配的阻抗元件。 当外部设备附接到第二电路时,第一和第二电路示意性地相当于尽管相位不同。 当振荡信号输入到一个变压器时,次级绕组的匹配阻抗和异相连接消除了信号,使得只有一个回波信号被另一个变压器输出。

    Device and method for suppressing DSL signal echo induced by bridgetap
    3.
    发明授权
    Device and method for suppressing DSL signal echo induced by bridgetap 有权
    抑制由bridgetap引起的DSL信号回波的装置和方法

    公开(公告)号:US07139392B1

    公开(公告)日:2006-11-21

    申请号:US09597154

    申请日:2000-06-20

    CPC classification number: H04M3/002 H04M3/007 H04M3/304

    Abstract: A digital signal line transmission system with reduced echo is provided. A communication line is between a carrier and a user terminal. A bridgetap line has a first end connected to the communication line. An adaptor having a capacitance is connected to the bridgetap line. The adaptor reduces the effect of echo from the bridgetap line on a rate of data transmission to the user terminal over the communication line.

    Abstract translation: 提供了具有减少的回波的数字信号线传输系统。 通信线路在载波和用户终端之间。 桥接线路具有连接到通信线路的第一端。 具有电容的适配器连接到bridgetap线。 适配器减少了来自bridgetap线的回声对通信线路上用户终端的数据传输速率的影响。

    Device for inducing a wink in a telephone system
    4.
    发明授权
    Device for inducing a wink in a telephone system 失效
    用于在电话系统中引起眨眼的装置

    公开(公告)号:US5953390A

    公开(公告)日:1999-09-14

    申请号:US829184

    申请日:1997-03-31

    Abstract: The present invention is directed to an adaptor for simulating the presence of a PBX device in a telephone network. The adaptor connects to an external line from the central office, and a test set. When the central office seizes the line, the adaptor responds by inducing a wink. The central office, believing that it has received an authentic PBX response, sends data to the PBX site responsive to the wink. The adaptor relays these signals to the external test set for analysis.

    Abstract translation: 本发明涉及用于模拟电话网络中PBX设备的存在的适配器。 适配器连接到中心局的外线,还有一个测试仪。 当中央办公室占用线路时,适配器通过引发眨眼来响应。 中央办公室认为,它已经收到真正的PBX响应,响应于眨眼将数据发送到PBX站点。 适配器将这些信号中继到外部测试仪进行分析。

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