Method and apparatus for telecommunication session authentication using DTMF signaling
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United States of America Patent
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Issued Date -
May 26, 2011
app pub date -
Nov 24, 2009
filing date -
Nov 24, 2008
priority date (Note) -
Abandoned
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Abstract
Method and system for authenticating a telecommunication session request provides the steps of receiving the telecommunication session request, sending an authentication trigger request, receiving at least one authentication character encoded by a DTMF tone that is not capable of being generated via a keypad stroke and performing an authentication operation upon the at least one received authentication character. In one embodiment of the invention, the at least one authentication character is a string of authentication characters. The string may further include a first non-numeric DTMF tone (indicative of the beginning of the string of authentication characters), one or more alpha-numeric DTMF tones and a second non-numeric DTMF tone (indicative of the end of the string of authentication characters). Additional information may also be appended to the at least one authentication character during the receiving step (i.e., callerID information or a destination number for the telecommunication session).
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