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Method and a device for controlling protection or restoration paths in a hybrid optical network

  • US 20050031340A1
  • Filed: 08/08/2003
  • Published: 02/10/2005
  • Est. Priority Date: 08/08/2003
  • Status: Abandoned Application
First Claim
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1. A method of controlling auxiliary paths (CP, SC) in a hybrid optical communications network comprising a multiplicity of hybrid nodes (NO, NT) interconnected by transmission lines, which method is characterized in that, in the event of a fault on a transmission line along which a connection passes, the method consists in determining at least one auxiliary path independent of color between the hybrid nodes (NO) at the ends of said faulty transmission line and at which said connection can be switched in opaque mode, and then in switching optical signals taking said connection to said auxiliary path, where applicable after color conversion.

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