Terminal for secured bidirectional link conveying synchronous digital hierarchy (sdh) multiplexed data
CA 2208015 A1 · Owner: Alcatel Submarine Networks · Inventors: Lemaire, Alain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Based on a preferential method of production this terminal (SLTE1) consists of two transmission devices (TA1 TB1) each including: means of extracting a signal (FERF1' FERF2') from each of these two SDH multiplexes which is capable of indicating a fault at the remote end of the link; and means of receiving two SDH (D1a D2a) multiplexes and multiplexing them with service data specific to the secured link into a single multiplex capable of being transmitted on the first line (L1) by inserting the two fault signals (FERF1' FERF2') and two additional fault signals (FERF3' FERF4') into these service data, these two additional signals being provided by the other transmission device; - a switch …
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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 June 5, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 5, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.