The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 2002
Filed:
Mar. 04, 1998
Mark Tooker, Kanata, CA;
Tom Phillips, Kanata, CA;
Alcatel Canada Inc., Kanata, CA;
Abstract
A semi-permanent virtual path circuit (SPVPC) is used in a dedicated-connection switching digital network for routing and maintaining data flow between network edge nodes. A two level connection admission control and signaling regime is employed wherein the semi-permanent virtual path circuit is automatically provisioned by a network management system to level two signaling and connection admission control and the physical link between pairs of core nodes is provisioned with level one resources. Under this scheme the physical link between core nodes is limited to virtual path circuits and the SPVPC carries switched virtual channel circuits (SVCCs) and semi-permanent virtual channel circuits (SPVCCs). The level two resources are configured to react slower to network changes, such as network failure, than the level one resources. In the event of network failure the faster acting level one signaling resources attempt to re-route VPC connections between core nodes before the slower level two resources becomes aware of the failure.