Self-repairing ring communications network
Microcomputer based distributed control network
Survivable ring network
Method for initiating configuration of a communication network after the interruption of at least two-ring shaped networks arranged in parallel
Self-healing bidirectional logical-ring network using crossconnects
Dual access rings for communications networks
Dual-hubbed arrangement to provide a protected ring interconnection Patent #: 5218604
ApplicationNo. 892079 filed on 06/02/1992
US Classes:370/223, Using a secondary ring or loop370/228, Spare channel370/236, Including signaling between network elements370/238Least cost or minimum delay routing
ExaminersPrimary: Olms, Douglas W.
Assistant: Ton, Dang
Attorney, Agent or Firm
International ClassH04J 001/16
AbstractLong delays in bidirectional multiplex section-switched self-healing ring transmission systems are avoided by eliminating looping of communications signals when restoring them in response to a failure in the ring and by distributing switching of paths to be protected to ring nodes other than those immediately adjacent the failure. This is realized by provisioning each node in the bidirectional multiplex section-switched ring transmission system with a map of its traffic pattern (all active tributaries) and the relative position of each ring node in the ring transmission system, and allowing the ring node, if it has communications traffic affected by the failure, to bridge and switch to and from the protection path.
Field of SearchSpare channel