Method for transmission of signal tones in heterogeneous networks, device and computer program product
CA 2464296 C · Owner: Nokia Solutions And Networks Gmbh & Co. Kg · Inventors: Baumann, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for the establishment of a connection whereby, a media gateway controller (11) on the B side which is given the transmission , method supported by the media gateway (3) on the A side selects a transmission , method, which is supported by both the media gateway (3) on the A side and the media gateway (4) on, the B side and transmits the selection thereof to the media gateway controller (10) on the, A side. It can thus be guaranteed that in a commonly supported transmission method that, a connection occurs in which the DTMF signal tones can be transmitted.
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 August 30, 2002 and granted January 15, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 30, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 30, 2024.
- 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.