Method and system for supporting pacs using a gsm mobile switching center
CA 2247165 C · Owner: Lukander, Pertti S. · Inventors: Chang, Li-Fung; Varma, Vijay Kerala; Lipper, Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for enabling the integration of the Personal Access Communications System (PACs) (2) which supports low-tier radio wireless communication , devices with a GSM network (1) used to support high-tier cellular devices to , allow connection of the PACs system (2) to public switched telephone networks that do not have Advanced Intelligent Network capabilities. The functions of the conventional PACs Access Manager are redistributed among the various components of the PACs/GSM integrated system. Modifications to the PACs protocol to make it compatible with GSM protocol are detailed.
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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 21, 1996 and granted July 31, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 21, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 2018.
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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.