Transport of vertical control protocol messages on a switched communications network
CA 2380014 A1 · Owner: Terrill, Stephen · Inventors: Rytina, Ian; Graf, Leslie; Terrill, Stephen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates generally to the sending and receiving of messages between two entities of a physically decomposed telecommunications node, where the media connections of one of the entities is controlled by the other, and in particular to the transport of Vertical Control Protocol messages between two such entities. The invention is suitable for use in the transport of Vertical Control Protocol messages between a media gateway controller and a media gateway of a physically decomposed H.323 gateway however, that the invention is not limited to use in that application only. , In essence, the invention stems from a realisation that the extended use of the Vertical Control …
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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 July 17, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 17, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 17, 2022.
- 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.