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The802.9 Working Group of theIEEE 802 networking committee developed standards for integrated voice and data access over existing Category 3 twisted-pair network cable installations. Its major standard was usually known asisoEthernet.

IsoEthernet combines 10megabits per secondEthernet and 96 64-kilobits per secondISDN B channels. It was originally developed to provide data and voice/video over the same wire without degradation by fixing the amount ofbandwidth assigned to the Ethernet and B-channel sides.

There was some vendor support for isoEthernet, but it lost in the marketplace due to the rapid adoption of Fast Ethernet and the working group was disbanded.

• IEEE Std 802-1990: IEEE Standards for Local and Metropolitan Networks: Overview and Architecture New York:1990

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