Integration of stimulus signalling protocol communication systems and message protocol communication systems
CA 2288345 A1 · Owner: Nortel Networks Limited · Inventors: Barker, Iain William; Tubb, David John; Jarvis, Peter Karel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Stimulus signalling protocols and message protocols are methods for transferring, information over a communications network. Stimulus signalling protocols (e.g. P-Phone) are typically used for connecting simple terminals to a more powerful host, whereas message protocols (e.g. H.323 standard) are typically used to connect between, such hosts. Equipment has typically been developed and manufactured for use with, either but not both systems and this has led to the need for protocol conversion devices, which are complex and time consuming to develop and maintain. Voice data is sent via, an H.323 channel over a data network and associated P-Phone signalling data is sent, via a T.120 …
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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 November 2, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 2, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 2, 2021.
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Timeline
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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.