Method and apparatus for securing telephone passwords

Method and apparatus for securing telephone passwords

DTMF tones used to enter a password reflected by an answering machine or voice mail system can be masked using a jamming signal generator. When an answering machine or voice mail system is accessed with a cellular phone, the DTMF tones used for the password can be reflected back over the cellular ne...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: LEVENS BRUCE
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
SELECTING
TELEPHONIC COMMUNICATION
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Beschreibung
Zusammenfassung:DTMF tones used to enter a password reflected by an answering machine or voice mail system can be masked using a jamming signal generator. When an answering machine or voice mail system is accessed with a cellular phone, the DTMF tones used for the password can be reflected back over the cellular network, which compromises security. A method and apparatus are disclosed which detects tones on an input line and outputs a jamming signal on the output line to mask the reflected tones.