Re: Telstra/Uni Lines

Peter Meric (pmeric@nospam.socs.uts.edu.au)
Thu, 1 Aug 1996 01:21:22 +1000 (EST)

On Wed, 31 Jul 1996, Matthew Keenan wrote:

Okay, I pretty much agree with what's been said. However, no one has
addressed (or suggested) a feasible reason for the difference in bandwidth.
The initial connection is slower because of the extra (Telstra + Optus)
switches that it has to traverse, but what about the speed of the
connection?

> another point is that it is not unheard of for PCM (the same
> modulation modems use for sending data) compression to be used on
> voice line over long distance or heavy use trunks. this _will_ affect
> the maximum speed you can get out of a modem on a voice line across
> such a trunk. data lines and hence ISDN lines are typically guaranteed
> not to have such compression.

Not unheard of, and not improbable. One good theory as to the slower
speeds.

Peter

------------------------------------------------------------------------
Peter Meric pmeric@nospam.socs.uts.edu.au
pmeric@nospam.progsoc.uts.edu.au
pmeric@nospam.acs.itd.uts.edu.au

"Stupidity cannot be cured with money, or through education, or by
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