Patent ID: 6952415
Filing Date: 2005-10-04
Classification: H04J,H04L,H04M,H04N,H04Q

Abstract:
1. A method of establishing a communication connection between a first terminal and a second terminal, wherein the first and second terminals are configured for communicating over a primary network, the method comprising: receiving at a dial-out unit a first call setup message from the first terminal over a first signaling channel, the first call setup message including an identifier of the second terminal; determining whether to establish a communication session between the first and second terminals over an alternative network based on the identifier of the second terminal; outputting from the dial-out unit to a dial-in unit, over a data channel, the identifier of the second terminal; and outputting from the dial-in unit to the alternative network, over a second signaling channel, a second call setup message and the identifier of the second terminal, wherein the alternative network is an asynchronous transfer made (ATM) network, the first and second signaling channels are ISDN D-channels, and the data channel is an ISDN B-channel.