| 摘要 |
A call trace feature for a network compatible device, such as a voice over Internet Protocol device. The call trace information may include an Internet Protocol (IP) address, a geographical location of the end-point device, a type or class of the end-point device, a call route, a topology of the route, a domain name server of the IP address and route, a directory number and name, a call back number, an advisement as to whether the IP address for the end-point device is mobile and an advisement as to what redirection may have occurred before the call was completed.
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