System and method for sharing a spare channel among two or more optical ring networks
CA 2318044 A1 · Owner: Mci Communications Corporation · Inventors: Fee, John A.; Nathan, Sridhar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method for sharing a spare channel (316) among two or more optical ring networks (202, 204) that have a common span (316). A first optical cross-connect switch OCCS (308) and a first OCCS controller (306) are placed at one end of the span (316) and a second OCCS switch (312) and a second OCCS controller (310) are placed at the other end of the span (316). The first OCCS (308) and the first OCCS controller (306) are coupled to a first ADM (K, A) from each optical ring and the second OCCS switch (312) and , the second OCCS controller (310) are coupled to a second ADM (G F) from each , optical ring. The first OCCS controller (306) receives alarm indications from each ADM …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed January 14, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 14, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 14, 2021.
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Timeline
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.