Patent ID: 7082120
Filing Date: 2006-07-25
Classification: H04L

Abstract:
1. A method for setting up an H.323 or SIP connection from a source network to a connection destination which is external to the source network and is identified by logical address information, comprising: conveying H.323 or SIP connection setup signaling from a first gateway device associated with the source network to a second gateway device via a first transit network; conveying H.323 or SIP connection setup signaling from the second gateway device to a third gateway device via a second transit network, the third gateway being associated with a communication network which is routed to the connection destination, where the source network has an H.323 or SIP gatekeeper for controlling H.323 or SIP connections internal to the source network, the first gateway device has a first H.323 or SIP interface to the source network and a second H.323 or SIP interface to the first transit network, and the first H.323 or SIP interface is designed for operation in a gatekeeper-controlled H.323 or SIP mode, and the second H.323 or SIP interface is designed for simultaneous operation in a gatekeeperless H.323 or SIP mode.