| 摘要 |
<p>A synchronization method in an AAL terminal system of a dual configuration including an acting ALL (ATM Adaptation Layer Type) terminal device and a standby ALL terminal device, for converting STM data to ATM cells, in which the acting ALL terminal device, upon receipt of a cell conversion starting request, starts cell conversion, notifies the starting timing of the cell conversion to the standby AAL terminal device, and starts counting input STM frame pulses by a frame pulse counter, while the standby ALL terminal device, upon receipt of the starting timing of the cell conversion, starts counting the input STM frame pulses by the frame pulse counter of the corresponding user connection, thereby establishing synchronization between output ATM cells of the acting device and output ATM cells of the standby device in each user connection by the frame pulse counter.</p> |
