| 摘要 |
A data optical transmission apparatus utilizing multiplexer/demultiplexer mode for multiplexing and transmitting 24 channels of 51.84 Mbps frame, and for demultiplexing the frame data for realigning as twenty four pieces of frame data of 51.84 Mbps. The data optical transmission apparatus of the present invention utilizes a synchronous transmission apparatus of which transmission basic unit is 51 Mbps. The synchronous transmission apparatus has a convenience transmission means of simple bit interleaving mode and eight application software IC (ASIC) each of which has three 51 Mbps framers/reframers. By using the framers/reframers, twenty four channels of 51 Mbps frame data are produced, which are multiplexed for being transmitted as 1.2 Gbps data. At the receiving section, data of 1.2 Gbps is demultiplexed by 24 to 1, thus extracting twenty four pieces of frame data of 51 Mbps. The extracted 51 Mbps frame data is produced in the order reverse to the order of transmission. In the present invention, for aligning the extracted frame data of 51 Mbps in the initial data input order, channel aligning data is transmitted using 64 Kbps channel of 51 Mbps framer. The channel partition information extracted from the channel aligning data is used as the output address of 32x32 switch so that the initial input data order is restored and the frame data of 51 Mbps can be transmitted to desired channels.
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