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Re: cell rate decoupling

  • From: sats_@excite.com (sats narayan)
  • Date: 16 Jan 2003 14:44:53 -0800
  • Organization: http://groups.google.com/
  • X-Complaints-To: groups-abuse@google.com


"No Spam" <nospam@att.com> wrote in message news:<b06r3k$kme23@kcweb01.netnews.att.com>...
> "sats narayan" <sats_@excite.com> wrote in message
> 7d466e6b.0301151242.3885c643@posting.google.com">news:7d466e6b.0301151242.3885c643@posting.google.com...
> > I would like to know why cell rate decoupling is required? (inserting of
>  idle
> > cells at one end and removing idle cells at another end). What if this
>  feature
> > is not there?
> 
> This sounds like a homework problem.
> 
> Tell us what you think first.

In the books i've referred it's mentioned that physical interfaces like SONET
requires steady flow of cells and that's the reason why TC or in ATM layer
IDLE cells are inserted. So, is the IDLE cells required only for interfaces
like SONET? What's the physical interface behaviour if the IDLE cells are not
inserted? I couldn't find in any books on SONET that steady stream of bits
are required??? mebbie i'm missing something... Please shed me more light on
this.