| 摘要 |
The method involves transmitting a node-to-node control message from an input node (A) to an output node (D), where the message has a step indication field to indicate a step (60) e.g. signal adjusting preparation step. Local operations (62, 63) corresponding to the field are performed. A step acknowledgment is transmitted to the input node, after the local operations are completed. Another node-to-node control message is transmitted to the output node, in response to reception of the acknowledgment, where the field indicates a step (70) e.g. signal power adjusting step. An independent claim is also included for an optical network element comprising transport resources. |
