Abstract: Disclosed herein is a multidimensional optical cross-connect switching system. The system includes an optical fiber layer switching unit that cross-connect switches input/output optical fibers, extracts some of the input optical fibers, and inserts optical fibers from the upper layer into the output optical fibers. An optical waveband layer switching unit cross-connect switches the input/output optical wavebands, obtains wavebands by demultiplexing optical signals coming up from the lower layer, extracts some of the obtained wavebands and the input wavebands to route them to the upper layer, inserts wavelengths from the upper layer, and multiplexes the cross-connect switched wavebands and sends some of them to the output waveband ports and the rest to the lower layer.

Abstract: The present invention relates to a frame relay interworking service control method using a permanent virtual connection, whereby a frame relay subscriber's service information is registered to ATM exchange system, ATM exchange system inner path to the frame relay connection due to registering the frame relay connection to the registered subscriber is connected by means of PVC the registered frame relay. Such this invention is that the existing frame relay subscriber/network can be interworked with ATM exchange system without an extra device or function since ATM exchange system accommodates the frame relay interface.