Automated mass calling control for public switched telephone networks employing a packet based virtual tandem
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United States of America Patent
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Feb 21, 2006
Grant Date -
N/A
app pub date -
Nov 22, 1999
filing date -
Nov 22, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This patent concerns a system and method for detecting a mass calling event in a telephone system and to regulate telephone calls to a call destination for which a mass calling event has been detected where a packet transport network and Call Server is integrated into the Public Switched Telephone Network (PSTN). A packet transport network and a central Call Server implement switching functionality traditionally provided by numerous Time Division Multiplexing (TDM) switches within the PSTN. A credit bucket mechanism is used for call regulation in a mass calling event. The packet network may be based on (but is not limited to) ATM, Frame Relay, or IP packet protocols.
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