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Posted by Michelot on October 31, 2007, 7:58 pm
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Bonsoir Michelot,
> What is the meaning of "JAM OUTPUT => OUTPUT IDLE" associated to the
> classical value of 96 BT?
>
> If it was the first jam bit to the beginning of idle, it would be 32
> BT.
> If it was jam output duration with the idle detection, it would be 32
> + 96 BT.
It would be perhaps the minimum length of the collision fragment,
including preamble and jam signal.
In the figure B-1 page 509 of 802.3-2005, in the reverse direction,
the repeater set 1 sends this fragment to DTE 2, and it makes the
worst-case condition to determine the minimum frame length.
But we are in 1980-1983!
Best regards,
Michelot
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