Voice gateway and route selection
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 24, 2003
Grant Date -
N/A
app pub date -
Aug 16, 1999
filing date -
Jan 13, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A voice gateway is used to transmit voice signals through the Internet. Upon receiving a connection request, the gateway calculates an end-to-end delay time and selects a proper route according to the calculated delay time to improve the quality of voice transmission. A gateway (10) on the caller side multicasts a connection request to gateways (20) on the receiver side. Each of the receiver gateways returns a response to the caller gateway. According to the response, the caller gateway calculates a compression/decompression allowance and selects a route that employs a compression rule whose compression or decompression time is shorter than the compression/decompression allowance.
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