Patent ID: 7668100
Filing Date: 2010-02-23
Classification: H04L

Abstract:
1. A method, comprising: (a) at a first time, registering, by at least one of a gatekeeper and server and over a first signaling channel, a voice communication endpoint; (b) at a second later time following successful completion of registration, identifying, by at least one of a gatekeeper and server, an occurrence of at least one of the following events: (c) after the second time and in response to step (b), selecting, by at least one of a gatekeeper and server and from among the multiple gatekeepers, a selected gatekeeper for a second signaling channel; (d) after the second time and in response to step (c), notifying, by at least one of the gatekeeper and server, the registered voice communication endpoint of the selected gatekeeper; and (e) after the second time and in response to step (b), initiating set up, by the selected gatekeeper, of the second signaling channel between the registered voice communication endpoint and the selected gatekeeper, the second signaling channel being different from the first signaling channel and carrying call signaling messages, wherein the registered voice communication endpoint sends an admission request message to multiple gatekeepers and, in response, one of the gatekeepers is selected to perform step (b) and wherein step (b) comprises the sub-steps: (B1) determining that the at least one following events has occurred; (B2) in response, generating a confirmation message identifying the selected gatekeeper as being responsible for establishing the second channel; (B3) sending, by the selected gatekeeper, a TCP synchronization message to the registered voice communication endpoint; and (B4) determining that a TCP acknowledge message has been received from the registered voice communication endpoint and that the second channel is established.