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    • 2. 发明授权
    • Wireless access to telephone network dial tone
    • 无线接入电话网络拨号音
    • US5896569A
    • 1999-04-20
    • US649772
    • 1996-05-15
    • Myron C. ButlerLawrence O. HilligossGeorge Alter
    • Myron C. ButlerLawrence O. HilligossGeorge Alter
    • H04M1/24H04M3/22H04M3/30H04Q7/34
    • H04M1/24H04M3/22H04M3/30
    • A system and method for providing wireless access to a telephone line of a telephone network utilize a mobile terminal and a crossconnect base station. The mobile terminal transmits a radio frequency signal carrying a telephone communication. The crossconnect base station connects to a telephone line at a crossconnect box of a telephone network, receives the radio frequency signal carrying a telephone communication, and communicates the telephone communication over a connected telephone line. Other aspects of the system and method of the present invention include: (1) providing a wakeup signal from the mobile terminal to the crossconnect base station so that the base station can be powered down when not in use, thereby conserving energy; (2) receiving both the wakeup signal and the primary communication signal (which can carry data and/or voice) through a single antenna connected to the base station at the respective crossconnect box; and (3) recharging one or more batteries in the base station from an energy source of the telephone network.
    • 用于提供对电话网络的电话线路的无线接入的系统和方法利用移动终端和交叉连接基站。 移动终端发送携带电话通信的射频信号。 交叉连接基站连接到电话网络的交叉连接盒上的电话线路,接收携带电话通信的射频信号,并通过连接的电话线路通信电话通信。 本发明的系统和方法的其它方面包括:(1)从移动终端向交叉连接基站提供唤醒信号,使得基站在不使用时可以断电,从而节省能量; (2)通过在相应交叉连接盒处连接到基站的单个天线接收唤醒信号和主通信信号(其可以携带数据和/或语音)两者; 和(3)从电话网络的能源对基站中的一个或多个电池进行充电。
    • 3. 发明授权
    • Telephone line longitudinal balance tester and method
    • 电话线纵向平衡测试仪及方法
    • US06442239B1
    • 2002-08-27
    • US09360223
    • 1999-07-23
    • James A. AbdoGeorge AlterLawrence O. Hilligoss
    • James A. AbdoGeorge AlterLawrence O. Hilligoss
    • H04M124
    • H04M3/308
    • A longitudinal balance test circuit connects to the tip and ring lines of a pair of telephone wires. It also connects to a shield conductor that extends with the tip and ring lines. The test circuit includes a transformer which has two windings. One winding connects to the tip and ring lines, and it also connects to the shield conductor. The other winding connects to a signal generator that provides an alternating current test voltage with which to test longitudinal balance of the tip and ring lines. A method of testing a telephone line for longitudinal balance comprises: measuring an alternating current test signal applied to a telephone line under test; measuring stressed noise of the telephone line in response to the applied. alternating current test signal; calculating, in response to the measured alternating current test signal and the measured stressed noise, an adjusted value related to longitudinal balance regardless of the length of the telephone line under test; and displaying the adjusted value.
    • 纵向平衡测试电路连接到一对电话线的尖端和环形线。 它还连接到与尖端和环线延伸的屏蔽导体。 测试电路包括具有两个绕组的变压器。 一个绕组连接到尖端和环形线,并且还连接到屏蔽导体。 另一个绕组连接到信号发生器,该信号发生器提供交流电压测试电压,以测试尖端和环线的纵向平衡。 一种用于测试用于纵向平衡的电话线的方法包括:测量施加到被测电话线的交流测试信号; 根据应用测量电话线的应力噪声。 交流电流测试信号; 根据所测量的交流电流测试信号和测量的应力噪声,计算与纵向平衡相关的调整值,而不考虑被测电话线的长度; 并显示调整后的值。