H - Electricity – 04 – M
Patent
H - Electricity
04
M
H04M 1/66 (2006.01) H04W 4/16 (2009.01) H04W 12/06 (2009.01) H04M 1/57 (2006.01) H04M 1/663 (2006.01) H04M 3/56 (2006.01)
Patent
CA 2719139
Aspects relate to authorizing mobile devices for PBX-based voice services. A mobile device calls a PBX over a voice channel, and phone number identifier information is obtained and matched to identifier information for devices that known (authorizeable) to use the PBX. If there is one incoming call that matches to a given device, and an authentication token provided over a data channel matches an authentication token associated with that device, then the device is authorized for voice services. Where there are multiple matching calls, those devices are instructed to provide authentication tokens over their voice channels. The devices can detect absence of a data channel and provide authentication tokens over the voice channels; the devices also can wait to receive a call connected response and in the absence of such provide their authentication tokens over the voice channel. Tokens can be requested and downloaded for storage at the devices.
Keast Liam John
Singh Manvinder
Spencer Bradford Lawrence
Research In Motion Limited
Ridout & Maybee Llp
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