Signaling of a change from a first service to a second service during a call
CA 2597575 C · Owner: Siemens Aktiengesellschaft · Inventors: Belling, 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 and a device for signaling a change from a first service to a second service during a call between a terminal device (UE 1) and a second terminal device (UE 2) via at least one communication network. The invention is characterized in that when a change from the first service , to the second service takes place during a call between the first terminal device (UE 1) and the second terminal device (UE 2) a network unit (S-MSC 1, S-MSC 2) of the communication network via which the terminal device (UE 1 UE , 2) is communicating signals to at least one additional network unit (S-MSC 1 S-MSC 2, G-MSC 1, G-MSC 2) whether the change was initiated by the terminal …
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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 January 24, 2006 and granted October 28, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.