GATEWAY AND METHOD FOR DELAYING TELEPHONE RINGING
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United States of America Patent
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N/A
Issued Date -
Oct 15, 2015
app pub date -
Sep 3, 2014
filing date -
Apr 14, 2014
priority date (Note) -
Abandoned
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Abstract
A gateway in network telephone system screens VoIP and PSTN calls received and activates or does not activate an audible ringing of a local telephone device according to certain conditions, to prevent telephone harassment. The gateway includes modules, to establish a familiar number table, to detect whether a call has a caller ID, whether the caller ID is stored in the familiar number table, and whether the call duration exceeds certain time periods.
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