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US 5,920,410 AGranted
Access network
AssigneeBritish Telecommunications public limited company
InventorsPhilip John Smith, David Wynford Faulkner
Life of this patent
Estimating the term…
Abstract
A telecommunications access network includes a plurality of customer terminals and a plurality of network nodes. Each network node is connected to a plurality of the customer terminals by respective local access lines, whereby each customer terminal is connectable to a switch of a telecommunications core network via one of the network nodes. At least one of the customer terminals is connected to two of the network nodes by respective local access lines.
Claims10
A telecommunications local access network comprising:
- at least two independent subnetworks each of said independent subnetworks being connected to serve respective group of user terminations in the same local area, and
- each subnetwork including transmission links connecting its respective group of user terminations to a respective switch of a telecommunications core network,
- a plurality of user terminations each being served by at least a first and a second of said independent subnetworks so that telecommunications service(s) are routinely available thereto over both of said first and second subnetworks, with services continuing to be provided from one of said first and second subnetworks in the event that the other of said first and second subnetworks fails.
Dependencies are inferred from the claim text.