Communications network
AssigneeBritish Telecommunications public limited company
InventorsDerek Nesset, Justin Kang, Mark Wilkinson, Kevin Smith
Life of this patent
Estimating the term…
Abstract
A PON in which parallel optical fibre paths are provided between dual OLTs and the ONTs, one of the optical fibre paths providing an active connection and the other optical fibre path providing a standby connection. Respective VLANs may be formed over the parallel optical fibre paths. If performance indicators, for example Ethernet continuity check messages, indicate that an ONT is no longer in communication with the OLT then data may be sent via the VLAN associated with the standby connection.
Claims11
A communications network comprising first and second optical line terminals and one or more optical network terminals wherein:
- i) the first optical line terminal has a first network connection to the one or more optical network terminals and the second optical line terminal has a second network connection to the one or more optical network terminals;
- ii) a virtual LAN connection is made to each of the one or more optical network terminals via the first network connection;
- and
- ii) a virtual LAN connection is made to each of the one or more optical network terminals via the second network connection.
Dependencies are inferred from the claim text.