| 摘要 |
<p>PURPOSE:To shorten required time by executing the cell transmitting source communication node announcement of a cell synchronizing state from a cell receiving destination communication node by a cell synchronization display bit and transmitting a specified pattern in the case of out-of-synchronism. CONSTITUTION:When cell transmission is requested from a high-order layer transmission processing part 21, a transmission frame signal A is transmitted to the cell receiving destination communication node and when the received signal is detected at the receiving destination node, the signal A is similarly transmitted to the transmitting source node. The transmitting source and receiving destination nodes are synchronized by the bidirectional signal A. After the frame synchronization is established, the transmitting source node transmits a transmission frame signal B loading the cell of the specified pattern generated by a cell generation part 23. At the receiving destination node, the cell can be easily synchronized by the received cell of the specified pattern. In the case of out-of-synchronism, by switching the cell to the cell of the specified pattern at the transmitting source node, the cell can easily be synchronized once again.</p> |
