Token over ethernet protocol
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United States of America Patent
Stats
-
Jun 15, 2004
Grant Date -
N/A
app pub date -
Mar 27, 2000
filing date -
Dec 24, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A token over Ethernet protocol is described which allows a plurality of ports connected to a shared channel to communicate with each other. The communication is controlled by tokens that are transmitted before the transmission of packets. A packet can contain digital data from a digital device such as a computer, or digitized voice signals from a voice device such as a telephone. Voice packets are given priority over data packets to minimize delays that might provide distortion to the received voice signal. Each transmitted token identifies the next port to transmit which is determined from a valid list maintained within each port. All ports can receive tokens and packets during any receiving cycle, but only the port authorized by the last transmitted token can transmit a token, or a token and a packet. All ports check each transmitted token for a turn at transmitting information.
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