Patent ID: 7046932

Claim:
A channel allocation apparatus of an OSU in a WDM system comprising: an optical signal converter for performing a conversion operation between an E1 data frame and an optical signal; a channel allocating unit for performing a counting operation by a certain unit on E1 data and detecting an channel allocated to the E1 data, the channel allocating unit including a demultiplexing unit to detect data assigned to each channel, the demultiplexing unit including: a demultiplexer to demultiplex the E1 data and detect the data assigned to each channel; a buffer unit to store the detected channel data; and a channel data multiplexer to multiplex the channel data stored in the buffer unit and to output the multiplexed channel data; an E1 framer for refraining the E1 data frame outputted from the optical signal converter to output it to the channel allocating unit, and framing the E1 data outputted from the channel allocating unit to output it to the optical signal converter; and a microprocessor for controlling an operation of the E1 framer.