Patent ID: 8548432
Filing Date: 2013-10-01
Classification: H04L,H04W

Abstract:
1. A method of establishing service over a voice channel, comprising: accepting a plurality of calls; requesting identifying information for each accepted call, the identifying information including an encrypted identifying authentication token comprising a series of audible tones; determining if any of the accepted calls has corresponding identifying information matching identification information corresponding to a first authorizable device; determining if any of the accepted calls has corresponding identifying information which does not match any stored identification information; determining if any of the accepted calls is one for which no identifying information was obtained; for each accepted call which has identifying information which does not match stored identification information and for each accepted call for which no identifying information was obtained, requesting, over data channels of devices initiating those calls, that each such device provide, without a user input, a unique encrypted authentication token over a voice channel corresponding to an accepted call; for each authentication token received, determining whether such authentication token matches an authentication token previously provided to a second authorizable device; providing voice service via the voice channel over which the matching authentication token was provided; requesting over a voice channel, that each device provide an authentication token when a corresponding data channel is not currently operable; and thereafter removing each authentication token received from a database of issued and valid tokens; and further comprising determining that the identifying authentication token is valid prior to providing voice service to the call having the corresponding identifying authentication token.