[RE] Latencies through RE cables (better URL)

[David V James <dvj@xxxxxxxxxxxx>]

All,

(The URL has been updated, after David Law
provided a more universally accessible web page).

Things seem to have been quiet for the last week.
Perhaps I could stimulate some discussions on
cable latencies?

I believe Alexei's presentations have claimed that
interactive latencies of 15ms are nearly audible.

Since the link delays are only part of the delay
equation, this has led some of us to believe that
(worst case) per-hop latencies should not exceed
0.5ms. (This number is much more than the speed
of light, since it includes buffer and conflict
delays.)

Is there any controversy with using this as a
working per-hop maximum delay number? 

For background material on this topic, please
reference pages 15-17 of the following
working paper:

  http://www.ieee802.org/3/re_study/material/index.html
  (Thanks again to David Law for his quick posting!!)

I have spent the last week accumulating content
of various slide presentations into the above
listed working paper. Hopefully this will be helpful
when considering this and other issues.

DVJ
David V. James