Patent ID: 8638656
Filing Date: 2014-01-28
Classification: H04L,H04M

Abstract:
1. A method for sending a call setup message to an alternative endpoint during a network disruption in a communication network, comprising: receiving, by a processor, the call setup message to a primary endpoint of a subscriber that is unreachable due to the network disruption, wherein the network disruption is caused by a network problem; and sending, by the processor, the call setup message to the alternative endpoint registered by the subscriber, wherein the communication network comprises an internet protocol network, wherein the sending comprises sending the call setup message to the alternative endpoint via a time division multiplexing based telephone network, wherein the call setup message is sent via a first border element in the communication network that is different from a second border element that is used to reach the primary endpoint, wherein the alternative user endpoint is distinct from the primary endpoint, and wherein the alternative endpoint comprises a different telephone number that the primary endpoint.