公开(公告)号：US20070206761A1

公开(公告)日：2007-09-06

申请号：US11247952

申请日：2005-10-11

申请人： Joseph Anders ,  Jeremy Birch ,  Kenneth Salter ,  Xiaojiang Song

发明人： Joseph Anders ,  Jeremy Birch ,  Kenneth Salter ,  Xiaojiang Song

IPC分类号： H04M3/42

CPC分类号： H04M3/2281 ,  H04M3/56

摘要： The present subject matter is directed to an apparatus and methodology for detecting three-way call attempts during telephone conversations. Per the methodology, apparatus is configured to, in effect, “ping” a called telephone by transmitting an audio frequency range tone over the loop established from the calling telephone to the called telephone, measuring the tone return time and using that measurement as a base measurement comparison point for additional measurements during the course of a conversation. The base measurement would be inherently determined by the particular path established for a given call, which path does not ordinarily change during the call. If the return time for a subsequent measurement deviates significantly from the base measurement, a determination is made that a three-way call attempt has been made because it would be a strong indicator that the total path of the call had changed, which would only occur if the inherent nature of the call changed (i.e., became a three-way call).

摘要翻译： 本主题涉及用于在电话对话期间检测三方通话尝试的装置和方法。 根据该方法，设备实际上通过在从呼叫电话建立到呼叫电话的循环上发送音频范围音调来“ping”一个被叫电话，测量音调返回时间并使用该测量作为基础 在对话过程中进行额外测量的测量比较点。 基本测量将由为给定呼叫建立的特定路径固有地确定，哪个路径在通话期间通常不会改变。 如果后续测量的返回时间与基本测量值显着偏离，则确定已进行三方通话尝试，因为它将是呼叫的总路径发生变化的强指标，仅会发生 如果呼叫的固有性质改变（即成为三方通话）。