Between bidirectional line switched ring patents

Ring interworking between bidirectional line-switched ring transmission systems

Filed: October 22nd, 1993 [Granted]

Patent Number: 5390164

Ring nodes 112 and 120 form first shared node 130 for interworking com- 45 munications circuits between bidirectional line- switched ring 100 and ...

Ring interworking between bidirectional line-switched ring transmission ...

Filed: October 22nd, 1993 [Granted]

Assignee: AT T Corp

Patent Number: 5394389

1 2 more interface and grooming capacity in the inter-ring RING INTERWORKING BETWEEN grooming apparatus. BIDIRECTIONAL LINE-SWITCHED RING _ TRANSMISSION ...

Ring interworking between a bidirectional line-switched ring transmission ...

Filed: March 26th, 1992 [Granted]

Patent Number: 5440540

Such add-drop multi- cuits between bidirectional line-switched ring 100 and plexer arrangements are known. For genetic require- other ring 101.

Bi-directional line switched ring network system

Filed: April 27th, 1999 [Granted]

Assignee: Hitachi Ltd

Patent Number: 6614754

The bi-directional line switched ring network system as claimed in claim 3, ... time slot numbers of transmission lines between all adjacent nodes, ...

Bidirectional line switched ring network control system

Filed: July 17th, 1996 [Granted]

Assignee: Fujitsu Limited

Patent Number: 5636205

A bidirectional line switched ring network control 35 apparatus according to claim 6, wherein the number of times of non-coincidence between the address ...

Bidirectional line switched partial rings, mesh networks, and methods of ...

Filed: December 19th, 2003 [Granted]

Assignee: Ciena Corporation

Patent Number: 7680032

The method of claim 3, wherein the at least one wavelength channel is optically switched between the rings. 20 5. The method of claim 3, wherein the at ...

Method and apparatus for passing control information in a bidirectional line ...

Filed: December 27th, 1999 [Granted]

Assignee: Alcatel

Patent Number: 6683891

... CONTROL INFORMATION IN A BIDIRECTIONAL LINE SWITCHED RING CONFIGURATION ... in the event of a failure in the working communication link between any node ...

Method for controlling switching in bidirectional line-switched ring

Filed: March 20th, 2001 [Pending]

Patent Application Number: 9812419

[0226] The last embodiment differentiates between LP-S and SF-P in the same K ... A method of controlling switching in a bidirectional line-switched ring ...