System and method for administrating call and call feature set-up in a telecommunications network
CA 2364468 A1 · Owner: Graves, Richard C. · Inventors: Liu, Song; Lin, Hua; Graves, Richard C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved system and method for administrating and processing call and call feature setup in a PSTN and other telecommunications networks are provided. Calls are set up on a service plane of a conceptual switch that includes a switch plane (25), control plane (30), and service plane (35 and 45) that are analogous to the open system interconnection (OSI) layered model of networks including a physical layer, network layer and application layer. Call set-up logic is separated from the switching fabric allowing for flexible, on-, demand, modification of service options using software while maintaining the same switching fabric in hardware. Call set-up is accomplished by a call request …
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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 March 6, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 6, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 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
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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.