Central call screening system

Details Central call screening system Central call screening system

2002-12-18

2009-11-10

Al Aubaidi, Rasha S (Department: 2614)

Telephonic communications

Special services

Call blocking

C379S200000

Reexamination Certificate

active

07616748

ABSTRACT:
A screening service for individual telephone lines to block unwanted calls based on call character signals and caller identification signals function in conjunction with a public switched telephone network. Calls identified by call character signals, as which identify a facsimile machine, and caller identification signals, as which identify an undesired call source, are recognized selectively in accordance with each program for individual telephone lines to provide blocking service including a termination cue. Using a dial-up connection, a subscriber can modify blocking information by a control program.

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Official Site of TeleZapper™: “Frequently Asked Questions” pp. Nov. 15, 2002.

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