System and method for out-sourcing the functionality of session initiation protocol (sip) user agents to proxies
CA 2434521 A1 · Owner: Moyer, Stanley L. · Inventors: Moyer, Stanley L.; Marples, David J.; Tsang, Simon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Session Initiation Protocol (SIP) is used to communicate with Network-capable appliances (340). In a system employing SIP a remote user agent client (UAC) , sends a message over the Internet via a Proxy server (320) to a user agent server at the location of the appliances (340) e.g. the client's home. This , communications channel allows the client to control the appliances and to determine their status. The Proxy server (320) between the UAC and a plurality of UAS processors has the address mapping authentication, authorization , and/or translation functions out-sourced from the UAS processors to the Proxy server (320) connected to them.
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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 January 31, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 31, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 31, 2024.
- 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.