Method and apparatus for dynamically routing calls in an intelligent network
CA 2216620 C · Owner: Bell Canada · Inventors: Williams, L. Lloyd; Reid, Colin A.; Clermont, Normand A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method, apparatus and system for dynamically routing selected calls through an intelligent switched telephone network are described. The method leverages the resident switching power in the Public Switched Telephone Network by departing from the Advanced Intelligent Network (AIN) call model while adhering to the basic principles of ISUP common channel signaling to introduce new flexibility in call routing. Using the method, calls can be efficiently routed and rerouted through the network. Control of a call can be effected by either the called party or the calling party. The method can be practised using either a virtual switching point (VSP) or an ISTP. The VSP is a physical mode in the …
Read the whole patent
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 September 24, 1997 and granted June 25, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 2019.
- 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.