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Cell Relay Retreat>List Archive>month:1999-May> msg00051



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Re: Why atm use 53 byte?

  • From: "snackman" <snackman@gateway.net>
  • Date: Mon, 17 May 1999 06:18:16 -0700


    AT&T = 32, they thought only of the delay associated with creating full
cells of voice.  Remember none of the adaptation layers were invented at
that time.

    ROW = 64, more efficient for data communications.

    Remember ATM was targeted originally at Broadband Video to the home,
622M downstream - 155 M upstream.  High Quality, Real Time, Video
Compression was not very real at the time.

    Jim


George Marshall <george@marshalls.org> wrote in message
373FA084.85F4FC96@marshalls.org">news:373FA084.85F4FC96@marshalls.org...
> AT?T 64, rest of world 32?
>
> snackman wrote:
>
> > I was at the meeting where this was adopted.  It was actually AT&T
against
> > the rest of the world.
> >