Patent ID: 6795432
Filing Date: 2004-09-21
Classification: H04J,H04Q

Abstract:
A method for searching a composite path for virtual container signals in a multi-stage CLOS switching network, comprising:managing a link use state between each stage; searching connectable candidate paths on the basis of the link use state and setting a selected path among candidate paths after searching; and managing a channel connection state of the set path wherein the setting the selected path comprises, receiving a channel type, a start channel number and a destination channel number for setting the path, identifying a first signal of the start channel to identify whether there is an existing path to the destination channel number, discriminating the channel type to perform one-way cross-connection, and performing a first VC3 path searching step or a first VC11/VC12 path searching step to set the path when the existing path does not exist, discriminating an available stage for broadcast connection from an output stage to an input stage so as to perform the broadcast connection when the existing path exists, and performing a second VC3 path searching step or a second VC11/VC12 path searching step in the discriminated stage to set the path.