Network-based telephony gateway and network-based telephony method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 10, 2005
Grant Date -
Jun 27, 2002
app pub date -
Jul 3, 2001
filing date -
Dec 21, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An Internet telephony gateway that connects a PSTN with an IP network and a method for operating the Internet telephony gateway are disclosed. When abnormal services due to matching between networks are interrupted, the Internet telephony gateway performs a flow for terminating a call with a corresponding subscriber terminal unit using an internal failure alarm system. The flow includes a message of a failure alarm, a tone, and an announcement.
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