Method and apparatus for line testing
    1.
    发明授权
    Method and apparatus for line testing 有权
    线路测试方法和装置

    公开(公告)号:US09025733B2

    公开(公告)日:2015-05-05

    申请号:US11489376

    申请日:2006-07-18

    CPC classification number: H04M3/30

    Abstract: A method of testing a communication line includes applying a voltage as a function of time on the communication line. The function includes at least one ramp and at least one plateau. The method includes measuring a current flowing via the communication line, and calculating at least one electrical property of the communication line based on the voltage and the current.

    Abstract translation: 测试通信线路的方法包括在通信线路上施加作为时间的函数的电压。 该功能包括至少一个斜坡和至少一个平台。 该方法包括测量经由通信线路流动的电流,以及基于电压和电流来计算通信线路的至少一个电气特性。

    Method and device for transmitting speech signals via a data telecommunications network
    2.
    发明申请
    Method and device for transmitting speech signals via a data telecommunications network 审中-公开
    用于经由数据电信网络发送语音信号的方法和装置

    公开(公告)号:US20070184808A1

    公开(公告)日:2007-08-09

    申请号:US10884800

    申请日:2004-07-02

    CPC classification number: H04M7/0069 H04M1/253 H04M7/006

    Abstract: In the case of a device for transmission of telephone signals via a data telecommunications network (2) the analogue signals of a telephone terminal are converted to digital signals for transmission via the data telecommunications network (2) and/or, vice versa, digital signals from the data telecommunications network (2) are converted to analogue signals for transmission via the telephone terminal. In order to monitor the operation of the device, advantageously digital signals arising within the device are analyzed. According to the invention a digital signal is acquired within the device and the characteristics of this, which characterize the amplitude and/or the frequency response of the acquired digital signal, are determined. The determined characteristics are sent out via the data telecommunications network (2). In this way the function of such conversion devices can also be monitored over a greater distance via the data telecommunications network (2) and signals arising therein can be analyzed. Advantageously for this purpose the acquired digital signal is filtered by means of a programmable filter (16) and integrated after absolute value generation or squaring. Various measured quantities, such as for example the effective value of the acquired digital signal, can be evaluated based on the frequency response adjusted with the filter (16) and on the result of the integration.

    Abstract translation: 在用于经由数据电信网络(2)传输电话信号的设备的情况下,电话终端的模拟信号被转换成数字信号以经由数据电信网络(2)和/或反之亦然,数字信号 从数据电信网络(2)转换成模拟信号以经由电话终端进行传输。 为了监视设备的操作,有利于分析在设备内产生的数字信号。 根据本发明,在设备内获取数字信号,并且确定表征所获取的数字信号的幅度和/或频率响应的特性。 确定的特性通过数据电信网络(2)发出。 以这种方式,也可以经由数据电信网络(2)在更大的距离上监视这种转换装置的功能,并且可以分析其中产生的信号。 有利的是,所获取的数字信号通过可编程滤波器(16)进行滤波,并在绝对值产生或平方之后被积分。 可以基于使用滤波器(16)调整的频率响应和积分的结果来评估各种测量量,例如所获取的数字信号的有效值。

    Method for measuring resistance for a subscriber line interface circuit using a protective circuit
    4.
    发明申请
    Method for measuring resistance for a subscriber line interface circuit using a protective circuit 有权
    使用保护电路测量用户线接口电路的电阻的方法

    公开(公告)号:US20050238165A1

    公开(公告)日:2005-10-27

    申请号:US11089044

    申请日:2005-03-24

    CPC classification number: H04M1/24

    Abstract: The invention relates to a method for ascertaining a resistance value (Z) between a first contact (2) and a second contact (3) in a subscriber line interface circuit (4), where a protective circuit (9) for protecting the subscriber line interface circuit (4) against overvoltages is provided between the two contacts (2, 3) and comprises a parallel circuit containing a protective capacitor (5) with two resistors (7, 8) connected in series via a node (K), the node (K) being connected to a third contact (10) in the subscriber line interface circuit (4), where the method has the following steps: a predetermined charging voltage (UCharge) is applied to the protective capacitor (5); a threshold voltage (UTH) is calculated on the basis of the resistance values (R1, R2) of the two resistors (7, 8) and the applied charging voltage (UCharge); a measured voltage (UM) tapped off across one of the two resistors (7, 8) is measured while the protective capacitor (5) is discharging; the measured voltage (UM) is compared with the calculated threshold voltage (UTH); a period (Δt) between the start of the discharging of the protective capacitor (5) and the time at which the measured voltage (UM) is the same as the threshold voltage (UTH) is ascertained; and the resistance value (Z) is calculated using the ascertained period (Δt) and the resistance values (R1, R2) of the two resistors (7, 8).

    Abstract translation: 本发明涉及一种用于确定用户线接口电路(4)中的第一接触(2)和第二接触(3)之间的电阻值(Z)的方法,其中保护电路(9)用于保护用户线路 在两个触点(2,3)之间设置有过电压的接口电路(4),并且包括一个并联电路,该并联电路包含一个保护电容器(5),其中两个电阻器(7,8)经由节点(K)串联连接, (K)连接到所述用户线路接口电路(4)中的第三接点(10),其中所述方法具有以下步骤:将预定充电电压(U SUB充电)施加到所述保护 电容器(5); 基于两个电阻器(7)的电阻值(R 1,N 2,R 2)来计算阈值电压(U TH TH) ,8)和施加的充电电压(U SUB充电); 在保护电容器(5)放电的同时测量在两个电阻器(7,8)中的一个上分接的测量电压(U M M); 将测量的电压(U SUB M)与计算的阈值电压(U TH TH)进行比较; 在保护电容器(5)的放电开始和测量电压(U SUB M)之间的时间与阈值电压(U TH)相同的时间段(Deltat) ); 并且使用确定的周期(Deltat)和两个电阻器(7,8)的电阻值(R 1,R 2,R 2)来计算电阻值(Z) 。

    Transmission apparatus with variable impedance matching
    5.
    发明申请
    Transmission apparatus with variable impedance matching 有权
    具有可变阻抗匹配的传输设备

    公开(公告)号:US20050114427A1

    公开(公告)日:2005-05-26

    申请号:US10977711

    申请日:2004-10-29

    CPC classification number: H04B14/04 H04L25/0278 H04L25/028

    Abstract: Transmission apparatus with variable impedance matching The invention provides a transmission apparatus (100) for transmission of electrical signals between a line driver (205), which is connected to a transmission line (201), and a switching center (301), having an analog feedback device (101) for coarse setting of a line voltage level (210) on the transmission line (201), and a digital feedback device (102), which is coupled to the analog feedback device (101) and has a feedback filter device (118), designed such that a filter input signal (404) can be converted to a filter output signal (405) at a rate which is lower than the sampling rate (fa) of an analog/digital converter (104).

    Abstract translation: 具有可变阻抗匹配的发送装置本发明提供一种用于在连接到传输线路(201)的线路驱动器(205)和具有模拟量的交换中心(301)之间传输电信号的传输设备(100) 用于在传输线路(201)上粗线设置线路电压电平(210)的反馈装置(101)和数字反馈装置(102),其耦合到模拟反馈装置(101)并具有反馈滤波装置 (118),被设计成使得滤波器输入信号(404)可以以低于模拟/数字信号的采样率(f SUB)的速率转换成滤波器输出信号(405) 数字转换器(104)。

    Method and apparatus for line testing
    6.
    发明授权
    Method and apparatus for line testing 有权
    线路测试方法和装置

    公开(公告)号:US09225825B2

    公开(公告)日:2015-12-29

    申请号:US11590981

    申请日:2006-10-31

    CPC classification number: H04M3/306

    Abstract: A method of testing a communication line includes applying a voltage as a function of time on the communication line and measuring at least a first current and a second current flowing via the communication line. The second current is measured at a different point in time than the first current. The method includes deciding whether a given terminal element is connected to the communication line based on the first current and the second current.

    Abstract translation: 一种测试通信线路的方法包括在通信线路上施加作为时间的函数的电压,并测量经由通信线路流动的至少第一电流和第二电流。 在与第一电流不同的时间点测量第二电流。 该方法包括基于第一电流和第二电流确定给定的终端元件是否连接到通信线路。

    Method and apparatus for line testing
    7.
    发明申请
    Method and apparatus for line testing 有权
    线路测试方法和装置

    公开(公告)号:US20080025476A1

    公开(公告)日:2008-01-31

    申请号:US11489131

    申请日:2006-07-18

    CPC classification number: H04M3/305

    Abstract: A method of testing a communication line includes measuring a first voltage/current couple on the communication line, measuring a second voltage/current couple different from the first couple on the communication line, and calculating a resistance based on the first couple and the second couple.

    Abstract translation: 测试通信线路的方法包括测量通信线路上的第一电压/电流耦合,测量不同于通信线路上的第一对的第二电压/电流耦合,以及基于第一对和第二对来计算电阻 。

    Method and control circuit for generating a supply direct voltage for an analogue telephone
    8.
    发明申请
    Method and control circuit for generating a supply direct voltage for an analogue telephone 审中-公开
    用于产生用于模拟电话的电源直流电压的方法和控制电路

    公开(公告)号:US20060251242A1

    公开(公告)日:2006-11-09

    申请号:US11417587

    申请日:2006-05-04

    CPC classification number: H04M1/738

    Abstract: A control circuit for generating a supply direct voltage for an analogue telephone comprises an SLIC circuit and a CODEC circuit. An analogue telephone is connectable to the SLIC circuit via a two-wire telephone line and the SLIC circuit detects a loop direct current flowing through the two-wire telephone line when connected to the SCLIC circuit. The CODEC circuit comprises a constant voltage source for generating a constant voltage and a subtractor for generating a differential voltage by subtracting a voltage proportional to the loop direct current from the constant voltage. The differential voltage is amplified with a constant gain factor for generating the supply direct voltage.

    Abstract translation: 用于产生用于模拟电话的电源直流电压的控制电路包括SLIC电路和CODEC电路。 模拟电话可以通过双线电话线连接到SLIC电路,SLIC电路检测到连接到SCLIC电路时流过双线电话线的环路直流电。 CODEC电路包括用于产生恒定电压的恒定电压源和用于通过从恒定电压中减去与环路直流成比例的电压来产生差分电压的减法器。 差分电压以恒定增益因子放大,用于产生电源直流电压。

    Method for measuring resistance for a subscriber line interface circuit using a protective circuit
    9.
    发明授权
    Method for measuring resistance for a subscriber line interface circuit using a protective circuit 有权
    使用保护电路测量用户线接口电路的电阻的方法

    公开(公告)号:US07561683B2

    公开(公告)日:2009-07-14

    申请号:US11089044

    申请日:2005-03-24

    CPC classification number: H04M1/24

    Abstract: The invention relates to a method for ascertaining a resistance value (Z) between a first contact (2) and a second contact (3) in a subscriber line interface circuit (4), where a protective circuit (9) for protecting the subscriber line interface circuit (4) against overvoltages is provided between the two contacts (2, 3) and comprises a parallel circuit containing a protective capacitor (5) with two resistors (7, 8) connected in series via a node (K), the node (K) being connected to a third contact (10) in the subscriber line interface circuit (4), where the method has the following steps: a predetermined charging voltage (UCharge) is applied to the protective capacitor (5); a threshold voltage (UTH) is calculated on the basis of the resistance values (R1, R2) of the two resistors (7, 8) and the applied charging voltage (UCharge); a measured voltage (UM) tapped off across one of the two resistors (7, 8) is measured while the protective capacitor (5) is discharging; the measured voltage (UM) is compared with the calculated threshold voltage (UTH); a period (Δt) between the start of the discharging of the protective capacitor (5) and the time at which the measured voltage (UM) is the same as the threshold voltage (UTH) is ascertained; and the resistance value (Z) is calculated using the ascertained period (Δt) and the resistance values (R1, R2) of the two resistors (7, 8).

    Abstract translation: 本发明涉及一种用于确定用户线接口电路(4)中的第一接触(2)和第二接触(3)之间的电阻值(Z)的方法,其中保护电路(9)用于保护用户线路 在两个触点(2,3)之间设置有过电压的接口电路(4),并且包括一个并联电路,该并联电路包含一个保护电容器(5),其中两个电阻器(7,8)经由节点(K)串联连接, (K)连接到所述用户线接口电路(4)中的第三触点(10),其中所述方法具有以下步骤:将预定充电电压(UCharge)施加到所述保护电容器(5); 基于两个电阻器(7,8)和施加的充电电压(UCharge)的电阻值(R1,R2)计算阈值电压(UTH); 在保护电容器(5)放电的同时测量在两个电阻器(7,8)中的一个上分接的测量电压(UM); 将测量电压(UM)与计算的阈值电压(UTH)进行比较; 确定保护电容器(5)的放电开始和测量电压(UM)与阈值电压(UTH)相同的时间之间的时间(Deltat); 并且使用确定的周期(Deltat)和两个电阻器(7,8)的电阻值(R1,R2)来计算电阻值(Z)。

    Communication line testing with protective devices in place
    10.
    发明授权
    Communication line testing with protective devices in place 有权
    通信线路测试与保护设备到位

    公开(公告)号:US08995623B2

    公开(公告)日:2015-03-31

    申请号:US13517598

    申请日:2012-06-14

    CPC classification number: H04M3/18 H04M3/005 H04M3/26

    Abstract: A system and method for testing a transmission line to a protected system includes measuring voltages between a tip-side node of an overcurrent protection device and the protected system, between a ring-side node of the overcurrent protection device and the protected system, between the tip of the transmission line and the protected system, and between the ring of the transmission line and the protected system. Using the measured voltages, the status of the overcurrent protection device and the overvoltage device may be recognized, and the magnitude of a voltage surge on either of the tip and ring wires may be determined.

    Abstract translation: 用于测试到受保护系统的传输线的系统和方法包括测量过电流保护装置的尖端侧节点与被保护系统之间的电流,过电流保护装置的环路侧节点与被保护系统之间的电压之间, 传输线和受保护系统的尖端,以及传输线环与受保护系统之间。 使用测量的电压,可以识别过电流保护装置和过电压装置的状态,并且可以确定尖端和环形线中的任一个上的电压浪涌的大小。

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