Effective use of dialed digits in call origination

Details Effective use of dialed digits in call origination Effective use of dialed digits in call origination

1998-01-05

2000-09-12

Bost, Dwayne D.

Telecommunications

Radiotelephone system

Security or fraud prevention

455410, 34082534, 380247, H04M 166

Patent

active

061189936

ABSTRACT:
The present invention strengthens authentication protocols by making it more difficult for handset impersonators to perform call origination using replay attacks. The present invention accomplishes this goal by using the most significant digits of a telephone number being dialed as a parameter for determining authentication codes. Using the most significant digits makes it more difficult for impersonators to successfully use replay attacks on call origination, wherein the replay attacks involve the appendage of digits to a telephone number to be dialed.

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patent: 5956636 (1999-09-01), Lipsit

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