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Method for tracing call establishing message

  • US 6,473,620 B1
  • Filed: 02/03/2000
  • Issued: 10/29/2002
  • Est. Priority Date: 04/28/1999
  • Status: Expired due to Term
First Claim
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1. A method for tracing a call establishing message between a specific mobile station and a specific channel element in a code division multiple access mobile communication system, comprising the steps of:

  • a) receiving information of a mobile station to be traced and the type of said call establishing message to be traced, from an operator;

    b) determining whether said specific mobile station is said mobile station to be traced, upon receiving a call establishing request from said specific mobile station, and sending a traffic channel establishing message to said specific channel element if said specific mobile station is said mobile station to be traced;

    c) receiving a trace report from said specific channel element receiving said traffic channel establishing message, when said call establishing message to be traced is transmitted and received; and

    d) sending the traced result of said call establishing message to a terminal of the operator upon receiving said trace report from said specific channel element.

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