Automatic call distribution system using isdn pri two b-channel transfer
CA 2282169 A1 · Owner: Holm, Robert K. · Inventors: Sethia, Kamal S.; Holm, Robert K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An automatic call distribution (ACD) system connected to a switch in a telephone network over an ISDN PRI interface. The ACD system receives a customer call and determines which agent should handle the call. The ACD system places an outgoing call to the agent. When the agent answers, the ACD system exchanges ISDN PRI Two B-Channel Transfer (TBCT) messages with the switch to cause the incoming customer and outgoing agent calls to be directly connected. When the incoming and outgoing calls are directly connected, the ACD is disconnected from both calls. The ACD is notified when the call between the agent and the customer is cleared.
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 14, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 14, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 14, 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.