Importance

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Abstract

A computer-implemented method for authenticating a cellular recipient to facilitate a call from a first caller's first communication device to a cellular recipient's cellular telephone is provided. The first caller dials an enterprise extension number and a server employs a cellular telephone number associated with cellular telephone to attempt to direct the call to cellular telephone in a public cellular network. The method includes initiating, prior to completing an end-to-end bearer channel between first communication device and cellular telephone, an authentication period having a finite duration. The method also includes receiving first authentication data from cellular telephone. If first authentication data matches, during the authentication period, with second authentication data that is pre-arranged with the server, completing the end-to-end bearer channel between first communication device and cellular telephone. However, if authentication period expires before first authentication data is received, denying the call and preventing the establishment of end-to-end bearer channel.

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First Claim