Telephonic communications – Audio message storage – retrieval – or synthesis – Indication or notification of message
Reexamination Certificate
2005-05-13
2009-10-20
Gauthier, Gerald (Department: 2614)
Telephonic communications
Audio message storage, retrieval, or synthesis
Indication or notification of message
C370S352000, C379S088010, C379S100080, C379S114280, C379S156000, C379S201010, C455S551000
Reexamination Certificate
active
07606351
ABSTRACT:
A telephone number change notification method is provided in which a calling party is reliably identified when a new telephone number of a called party is notified to the calling party when the called party changed the telephone number. When a telephone exchange detects that a called number is changed based on a subscriber information database, the telephone exchange sends a prompt message asking for sending a telephone number notification request to a calling telephone. The calling telephone creates a digital signature and sends it to the telephone exchange. The telephone exchange forwards it to a new telephone number of a called telephone. The called telephone receives the digital signature and verifies it. If the digital signature is valid, the called telephone notifies a new telephone number to the calling telephone.
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Gauthier Gerald
NEC Corporation
Sughrue & Mion, PLLC
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