Inter-exchange carrier access selection feature for a pbx user
CA 1296414 C · Owner: American Telephone And Telegraph Company · Inventors: Schmidt Modisette, Nancy Kathryn; Bogart, Frank Jeffrey
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, This feature provides the telephone communication system with the capability to automatically select one of a plurality of inter-exchange carriers to serve an interexchange call originated by a telephone communication system user. In response to an inter-exchange call origination the telephone communication system selects the appropriate and most economical inter-exchange carrier and then outpulses the inter-exchange carrier access code the user's, personal identification code and the called party number dialed by the user to complete the call.
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
- Granted February 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 25, 2009.
- 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.