Method and system for dynamic gateway selection in an ip telephony network
CA 2408090 A1 · Owner: Donovan, Steven R. · Inventors: Gallant, John K.; Donovan, Steven R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to the field of IP telephony. More particularly this , invention is a method and system for selecting gateways for routing calls through a packet-based telecommunications network interconnected with a public telecommunications network. This invention is a method and system for dynamically detecting available gateways (110a 110b), dynamically removing , failed or unavailable gateways (110a 110b), and automatically recovering , failed or unavailable gateways after a predetermined period of time. An embodiment of this invention comprises two user agents (102 103) within two , telephony systems (114a 114b) that are connected to an IP network (112); a plurality of …
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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 May 3, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 3, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 2023.
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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.