The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 2021
Filed:
Mar. 29, 2018
British Telecommunications Public Limited Company, London, GB;
Maria Cuevas Ramirez, London, GB;
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY, London, GB;
Abstract
A method of operating a mobile device to access a voice service available at a cellular network, the mobile device having a cellular network interface for accessing the voice service via a cellular network base station and a non-cellular local area network interface for accessing the voice service via a wireless routing device and a cellular network gateway, the method including connecting to a non-cellular wireless local area network of the wireless routing device; sending a request to the cellular network gateway to access the voice service; receiving a request from a voice service access controller, for any observed wireless local area networks and cellular networks; generating a list of any observed non-cellular wireless local area networks and observed cellular networks; sending said list to the voice service access controller via the non-cellular local area network interface; receiving an identity of one of the listed networks from the voice service access controller, the identified network representing an candidate network for accessing the voice service; and enabling the respective cellular or non-cellular network interface associated with the identified network to access the voice service.