Methods and apparatus for providing improved quality of packet transmission in applications such as internet telephony
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United States of America Patent
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-
May 15, 2001
Grant Date -
N/A
app pub date -
May 2, 2000
filing date -
Mar 17, 1997
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A digital data packet transmission process and system provides more efficient and higher quality of service in applications such as Internet telephony. In one aspect of this approach, transmission control protocol ('TCP') is used to send data from a first user or client over standard telephone lines to a local Internet service provider ('ISP'). At the ISP, the data packets are converted from TCP to user datagram protocol ('UDP'). The UDP packets are then transmitted, typically over a higher bandwidth link to another local ISP serving the recipient. The UDP packets are translated back to TCP packets and routed to the receiver. Because many existing systems currently employ UDP packets, the present approach is largely backwards compatible should a recipient be hooked up to an ISP that does not employ a TCP/UDP converter. A bidirectional TCP/UDP converter is preferable for two way communication such as Internet telephony.
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