System and method for an integrated wireline/wireless service using private branch exchange lines
CA 2339229 A1 · Owner: U S West, Inc. · Inventors: Gillespie, Donald E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and system for routing a call incoming to a PBX network (16) telephone number (20) from outside the PBX based on subscriber location includes routing the call to a wireline switch (30) which detects PBX triggers, generating a query at the switch (30) to the SCP (34) upon detecting PBX triggers requesting mobile registration status data for the PBX number (106). Also, routing the call from the switch (30) to a PBX switch (18) for delivery to a PBX handset (20) when the subscriber mobile registration data indicates the subscriber is not wireless registered (108). Further generating , a mobile query at the SCP to a HLR (44) of the wireless network (14) when the mobile …
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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 July 20, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 20, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 20, 2021.
- 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.