Patent ID: 7512065
Filing Date: 2009-03-31
Classification: H04L

Abstract:
1. A device for setting up virtual circuits between a first end system and a second end system, said virtual circuits being set up on a network connecting said first end system to said second end system, wherein said first end system is a first ATM switch, said second end system is a second ATM switch, and said network is an ATM network, said device comprising: an outbound interface coupled to said ATM network; a message construction block coupled to said outbound interface; a call control logic to cause said message construction block to construct a first signaling message requesting a first plurality of virtual circuits to be set up, and to send said first signaling message on said network to said second end system; wherein said first signaling message is a single signaling message, wherein said single signaling message comprises a plurality of information elements, wherein a first information element is designed to request set up of a single virtual circuit comprised in said first plurality of virtual circuits, and a second information element in the form of a non-mandatory information element according to a signaling specification used in said ATM network is designed to request set up of a second virtual circuit comprised in said first plurality of virtual circuits; an inbound interface designed for receiving on said ATM network a first acceptance message indicating that only said single virtual circuit is set up if any of a plurality of switches in a connection path between said first end system and said second end system is designed not to support processing of said non-mandatory information element, wherein said first acceptance message is received in response to sending said first information element contained in said signaling message to said second end system; and a parser designed for examining said first acceptance message and forwarding said first acceptance message to said call control logic.