H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/12 (2006.01) H04L 12/56 (2006.01) H04Q 11/04 (2006.01)
Patent
CA 2239032
An operator-directed soft-permanent virtual circuit (ODR SPVC) is established by manually provisioning a preferred path for the connection, including a source node, destination node, and intermediate nodes or subnetworks therebetween. The source network creates an SPVC Call Setup message which is signalled along the preferred path, whereby the intermediate nodes along the preferred path establish the bearer channel cross-sections. The operator also specifies a re-routing scheme for the ODR SPVC in the event the connection setup is blocked or the connection becomes inoperative. The re-routing scheme includes one of (a) the preferred path only; (b) a manually provisioned alternate path; and (c) any path. The ODR SPVC provides the benefits of a permanent virtual circuit (PVC) in terms of the ability to consciously route a connection with the benefits of a soft permanent virtual circuit (SPVC) in terms of the capability to efficiently re-route connections by the network as opposed to a central management authority.
Mcallister Shawn
Tooker Mark
Veeneman Ron
Alcatel Canada Inc.
Mccarthy Tetrault Llp
Newbridge Networks Corporation
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