| 摘要 |
Method for protection of ATM connections in a telecommunication network comprising at least one protection domain which covers only a portion of a connection, each protection domain comprising a source node (A) and a peer sink node (B). Each source node and its peer sink node can be connected by at least two alternative connection portions (1, 4) and can switch over from one connection portion to the other. Any node of the network can send an alarm message (AIS) downstream a current way (AEG7HFB) and each node can memorise a failure connection status when it receives such an alarm message (AIS). Each sink node (H, F, B) which receives the alarm message (AIS) sends a switchover request message (SWRQ) to its peer source node (respectively G, E, A) to request a switchover which is executed if the peer source node has not memorised an alarm message. The sink node, switches over only if the peer source node has responded positively. Application to ATM telecommunication network. <IMAGE> |
