OPTICAL EXCHANGE SYSTEM

PURPOSE:To realize composite service call comprising plural information types of a different band and an exchange form at one communication by the configuration that various processing system blocks started from a call processing system block through a processing system optical bus transfer control information to all channel system blocks. CONSTITUTION:Signal information for control and the various talking information of a broad or wide and multiplexed in response to a subscriber from a subscriber line 1 is separated by a subscriber line terminal station channel block 10 and after the signal is subject to time division multiplex at each information type, the result is subject to wavelength division multiplex into light having an assigned wavelength in advance at an information type, the talking information is transmitted to a channel system optical bus 3 via a branching filter circuit 51 and the signal information is transmitted to a processing system optical bus via a branching filter circuit 53. The talking information subject to wavelength multiplex at each information type on the channel system optical bus 3 is branched at each wavelength by branching circuits 61, 62 and led to various exchange channel blocks 11, 12 provided at each information type. The processing to control unifiedly all the channel blocks relating to one call is conducted based thereupon.