| 摘要 |
<p>An Ethernet access connection 102 connects a user access point 10 to an access node 12 in the network. The access connection comprises a passive coupler 20, by means of which a further access connection 104 can be provided between the user access point 10 and a second access node 14, such that data can be exchanged over each access connection 102, 104 between the user access point and the network. This duplication ensures that communication is not severed if the access connection 102 is breached. To avoid interference at the destination terminal 11 between the two resulting identical data streams, the access nodes 13, 18 giving access to the destination terminal are controlled such that only one of them forwards data to the destination access point 11, with the capability to switch to the other one in the event of a loss of connection between the access node 13 and user access point 10.</p> |
