Patent Number: 7,613,170

Title: Method and apparatus for PSTN-based IP active call recovery and re-routing

Abstract: A method and system for rerouting IP telephony call information. The system includes an existing IP telephony call, the telephony call originating at a first IP telephony phone. A second IP telephony phone receiving the IP telephony call from the first IP phone and a network routing condition, the routing condition causing the IP telephony call to be rerouted. A switchover instruction, the switchover instruction initiating a switchover of the existing IP telephony call to a PSTN.

Inventors: Grabelsky; David A. (Skokie, IL), Homeier; Michael (Lake Forest, IL)

Assignee: 3Com Corporation

International Classification: H04L 12/66 (20060101)

Expiration Date: 1/03/02017