PAIX
David Diaz
techlist at smoton.net
Mon Nov 18 18:48:32 UTC 2002
Well... remember it's speed of light THROUGH fiber which isnt the
same, its actually a bit slower then "c"
Coast to coast you should see 35 - 65ms depending on the route.
We've all had this thread about router overhead. If there is a
congestions point in the middle with buffering and traffic level
priorities running, then you are right. Otherwise I dont think you
should see 150-180ms.
In the real world however, yes, off several dsl links Im seeing those
levels to various sites, I think it's more a factor of congested
peering links or traffic aggregation at a hub. People arent spending
the money to upgrade links right now.
At 10:13 -0800 11/18/02, Jere Retzer wrote:
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Stephen Sprunk wrote:
>>>Any point in the US is within 25ms RTT (or less) of a major
>>>exchange; eliminating this 25ms of latency will have no effect on
>>>VoIP unless you're already near the 250ms RTT limit for other
>>>reasons.<<<
25 MS is assuming that the only delay is due to the speed of light.
Add equipment, especially routers or other gear that requires
manipulating packets and the delays add up quickly. I once read that
the most people wil tolerate on a regular basis is around 150-180 ms.
I think that is much too high for regular use
--
David Diaz
dave at smoton.net [Email]
pagedave at smoton.net [Pager]
Smotons (Smart Photons) trump dumb photons
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