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| Number | Title | Issue Date |
| 8166183 | Method and system for fast virtual concatenation setup in a communication network The invention is directed to optimizing setup of a VCAT connections using (largest) CCAT containers so as to minimize the number of cross-connection commands needed to enable data transfer. A system and method are provided for enhancing VCAT networks to include fast... | 04/24/2012 |
| 8125925 | Method and apparatus for non-disruptive call modification A method and system for changing the extent of data plane resources controlled by a control plane for a network connection which spans a contiguous set of nodes controlled by existing network control resources is disclosed. This is done in a non-disruptive manner. T... | 02/28/2012 |
| 8116232 | Method and apparatus for non-disruptive call modification A method and system for changing the extent of data plane resources controlled by a control plane for a network connection which spans a contiguous set of nodes controlled by existing network control resources is disclosed. This is done in a non-disruptive manner. T... | 02/14/2012 |
| 8085676 | Method and system for looping back traffic in QIQ ethernet rings and 1:1 protected PBT trunks A resilient virtual Ethernet ring has nodes interconnected by working and protection paths. If a span fails, the two nodes immediately on either side of the failure are cross-connected to fold the ring. Working-path traffic is cross-connected onto the protection pat... | 12/27/2011 |
| 7995569 | Virtual routers for GMPLS networks Virtual routers that abstract photonic sub-domains are provided for GMPLS networks. A virtual router uses a link viability matrix to keep track of the set of viable connections between inputs and outputs of a photonic sub-domain. A virtual router may receive RSVP-TE... | 08/09/2011 |
| 7948885 | Link bundle co-routed VCAT via RSVP message bundling Multiple RSVP messages are used to separately signal components of co-routed VCAT to enable the separate components to be implemented on different physical fibers of a link bundle. To enable the PATH messages to be handled as a group, the multiple PATH messages are ... | 05/24/2011 |
| 7756009 | Method and apparatus for priority call setup and restoration in an optical communications system A call setup and restoration schema is disclosed for providing an improved priority-based call setup and restoration schema in an optical communications system, allowing higher priority connections access to bandwidth by user-definable parameters. The call setup and... | 07/13/2010 |
| 7639631 | Parallel constraint based path computation using path vector Methods of computing a path through a network between a source node and a destination node. At the source node, an explore message is launched into at least one link hosted by the source node. The explore message includes a path vector containing a node identifier o... | 12/29/2009 |
| 7590051 | Method and apparatus for redialing a connection on a communication network Resources used by a connection are released when a connection is terminated, for example due to a failure on the network. When the connection is to be redialed, an indication of the released resources is collected and provided to the network element that will perfor... | 09/15/2009 |
| 7304947 | Connection creation/termination using parallel cross-connection download/undownload processes A method of creating/terminating a connection associated with an end-to-end path defined through a communications network. According to the invention, cross-connection download/undownload processes in each intermediate node of the end-to-end path are triggered subst... | 12/04/2007 |
