North American Network Operators Group

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Re: Another UUNET Explanation

  • From: Wolfgang Henke
  • Date: Wed Jul 02 10:21:32 1997

> Well sorry for the "delay" but I was in Paris for 
> some time ... 
> OK .. "delay" IS THE ISSUE!
> Voice over IP ... etc can not take the long delay
> times that ATM and Frame Relay may inccure.
> It's the same reason high earth orbit sat comm is not
> good for that type of communication. ........
> The "delay" of my exported X based Mailtool over a 64K
> line between the US and Netherlands is driving me crazy!


Here are some approximate light speed latencies:

silicon valley  to  Chicago         40 milliseconds
silicon valley  to  East Coast      60 milliseconds
East Coast      to  Europe         110 milliseconds
Via geostationary satellite        260 milliseconds 


Wolfgang

http://www.whnet.com