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    Method for selectively controlling the propagation of dual-tone multi-frequency signals within a telecommunications network
    2.
    发明授权
    Method for selectively controlling the propagation of dual-tone multi-frequency signals within a telecommunications network 失效
    用于选择性地控制电信网络内双音多频信号传播的方法

    公开(公告)号：US5327492A

    公开(公告)日：1994-07-05

    申请号：US876555

    申请日：1992-04-30

    申请人： Dario L. Parola

    发明人： Dario L. Parola

    IPC分类号： H04M3/42 ,  H04Q3/42 ,  H04Q3/58 ,  H04M1/00

    CPC分类号： H04Q3/42

    摘要： A method for monitoring a network communications channel to detect specific DTMF triggers transmitted by a network user during either a pre-answer or a post-answer period of a call supported by the channel, and, in response to the detected DTMF triggers, controllably prohibiting the propagation of subsequent DTMF signals transmitted over the channel by the network user. Specifically, possible disruption of a communication between the network user and other parties caused by transmission of DTMF signals is eliminated by advantageously transmitting the DTMF triggers during the pre-answer period of a call. Furthermore, another deficiency of prior network-based arrangements for restricting the propagation of DTMF signals is overcome, as the invention may be practiced without the introduction of any significant propagation delay to a network.

    摘要翻译： 一种用于监视网络通信信道以检测网络用户在由信道支持的呼叫的预应答或后回应期间发送的特定DTMF触发的方法，并且响应于检测到的DTMF触发，可控地禁止 由网络用户通过信道传输的后续DTMF信号的传播。 具体地说，通过有利地在呼叫的预接收期间发送DTMF触发，消除了由DTMF信号的发送引起的网络用户与其他方之间的通信的可能的中断。 此外，克服了用于限制DTMF信号的传播的现有的基于网络的布置的另一缺陷，因为可以在不向网络引入任何显着的传播延迟的情况下实践本发明。

    Systems and methods for controlling telephone sound enhancement on a per call basis
    4.
    发明授权
    Systems and methods for controlling telephone sound enhancement on a per call basis 失效
    在每个呼叫基础上控制电话声音增强的系统和方法

    公开(公告)号：US5802164A

    公开(公告)日：1998-09-01

    申请号：US575789

    申请日：1995-12-22

    申请人： Beth J. Clancy ,  Richard L. Else ,  Richard E. Le Cronier ,  Dario L. Parola ,  Roger E. Stone ,  Nancy Y. Tai

    发明人： Beth J. Clancy ,  Richard L. Else ,  Richard E. Le Cronier ,  Dario L. Parola ,  Roger E. Stone ,  Nancy Y. Tai

    IPC分类号： H04M3/42 ,  H04M3/40 ,  H04Q11/04 ,  H04M1/00 ,  H04M3/00 ,  H04M7/00 ,  H04M9/00

    CPC分类号： H04M3/40

    摘要： In a communications system containing signal enhancement circuitry capable of selectively enhancing portions of a plurality of signals carried on a corresponding plurality of channels through the signal enhancement circuitry, a system and method for controlling enhancement on a per call basis. The system includes: (1) command generation circuitry for generating an enhancement command for transmission to the signal enhancement circuitry and (2) command reception circuitry, associated with the signal enhancement circuitry, for receiving the enhancement command from the command generation circuitry and selectively enhancing the portion of the signals on the per call basis according to the enhancement command.

    摘要翻译： 在包含能够通过信号增强电路有选择地增强在对应的多个信道上承载的多个信号的部分的信号增强电路的通信系统中，用于基于每个呼叫来控制增强的系统和方法。 该系统包括：（1）用于产生用于传输到信号增强电路的增强命令的命令产生电路和（2）与信号增强电路相关的命令接收电路，用于从命令生成电路接收增强命令并选择性地增强 根据增强命令在每个呼叫基础上的信号部分。