| 摘要 |
<p>A telecommunications network termination device 10 has the capability to connect to a network access point 4 using a primary fixed line address 12 by a first route 13 and also, using a second network address 15, by a backup routing 16 to a shared wireless access point 7. Connection status messages are transmitted over the primary routing. If these are not detected by the network 9, it causes traffic to the user device 10 to be diverted over the backup routing to the second network address 15. It also transmits instructions to the user device 10 to route outgoing traffic by the same secondary route. The secondary route is identified from network tolopogy data 90 stored by the network control server 9. the a control 16, one of which is shared with system in which connection between a user termination and a network may be made by means of a primary routing and an alternative, secondary routing, wherein a monitoring signal is transmitted from the user terminal to a network control system over the primary routing and, if the monitoring signal is not detected by the network control system, the network control system causes traffic to and from the user terminal to be diverted over the secondary routing.</p> |
