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North American Network Operators Group

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Re: best effort has problems

  • From: Matthew Crocker
  • Date: Sat May 29 14:28:29 2004


The PSTN doesn't offer guaranteed end-to-end transmission, and
certainly statmuxes based on expected load.  Looks like similar
capacity planning.

The PSTN does guarantee a certain service level, latency, call completion etc.

Perhaps you refer to latency.  Most people don't care as long as
HTTP and POP3 latency is "good enough" -- and server response
time is often a substantial consideration.  SMTP really isn't
picky about latency or jitter.
Latency & Jitter are very important when dealing with sound & video. Or anything realtime for that matter. The Internet isn't just HTTP, NNTP, SMTP any more.

Maybe you mean packet loss.  Most everyone here can recall the
days of 30% packet loss across congested MAE FDDI fabric, but
that went away what seems like eons ago.
I remember quite a bit of packet loss when the last series of worms hit





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