Telephonic communications – Special services – Call blocking
Reexamination Certificate
2011-03-15
2011-03-15
Al Aubaidi, Rasha S (Department: 2614)
Telephonic communications
Special services
Call blocking
C379S211020, C379S221120
Reexamination Certificate
active
07907715
ABSTRACT:
A system and method are provided for blocking a telephone call from a calling party to a called party, the calling party associated with a calling party directory number, including a local-designated trunk group over which the incoming telephone call from the calling party is received. A service switching point is coupled with the local-designated trunk group, the service switching point receiving the telephone call, generating a query message including the calling party directory number, and sending the query message to a service control point. The service control point is coupled with the service switching point, receives the query message, and determines if the calling party is inter Local Access and Transport Area (interLATA) with respect to the service switching point. Where the calling party is determined to be interLATA, the service control point determines a screening indicator value, and generates a response message to the service switching point to block the telephone call received via the local-designated trunk group where the screening indicator value indicates that the telephone call is public telecommunications network provided.
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Heinmiller Wayne
Herrera David C.
Moss John W.
Schroepfer Tyler D.
Tiliks Dianna
Al Aubaidi Rasha S
AT&T Intellectual Property I L.P.
Jackson Walker L.L.P.
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