×

Method and system for call tracing

  • US 6,243,458 B1
  • Filed: 10/28/1999
  • Issued: 06/05/2001
  • Est. Priority Date: 04/17/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for tracing a call, the method comprising steps of:

  • in a telecommunications network, receiving a telephone number to be traced;

    establishing a call trace at a plurality of central offices of the telecommunications network using the telephone number to be traced; and

    on a user display device, indicating that a call has been made to the telephone number to be traced.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×