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:
Feb. 26, 2013
Filed:
Dec. 14, 2009
Christopher Labrador, Waterloo, CA;
Alexander Reif, Bonn, DE;
Michael Eric Gray, Montclair, NJ (US);
Douglas Gisby, Rolling Meadows, IL (US);
Colin Mark Werner, Kitchener, CA;
Christopher Labrador, Waterloo, CA;
Alexander Reif, Bonn, DE;
Michael Eric Gray, Montclair, NJ (US);
Douglas Gisby, Rolling Meadows, IL (US);
Colin Mark Werner, Kitchener, CA;
Research In Motion Limited, Waterloo, CA;
Abstract
Mobile devices are authorized to access PBX-based voice services through presentation of audible tones on a voice channel, which are determined based on a code received over a separate data channel. The device can request a code over a data channel from a server in communication with the PBX. The server provides data representative of the code over the data channel to the device, and arranges for local storage of the code. The device makes a connection with the PBX over a separate voice channel. The mobile device presents the received code as a sequence of audio tones (e.g., DTMF tones). The audio tones are used to generate data that can be compared with stored codes by an authentication module. The authorization module can indicate to the PBX that the code is valid; services can be provided by the PBX in response. The valid codes can be maintained, such as by removing used codes from code storage.