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Re: Low bit rate chip set?

From: Paul Koning <pkoning@xedia.com>
Date: Fri, 24 Apr 1998 17:35:55 -0400

pmandal@ix.netcom.com wrote:
> 
> Richard and Paul,
> 
> If you're looking for UBR @ 256 Kbps, the BT8233 doesn't
> do that.

Well, yes and no.

It doesn't mention it specifically, but if you set it to "VBR with
a single bucket" that means you're specifying PCR for the VC while
leaving any notion of SCR unstated.  That does limited UBR very
nicely.

> Let me see if I understand this correctly ---
> are you essentially looking to specify UBR with PCR
> capabilities.
> 
> If so, one way of achieving this is specifying
> VBR-RT with PCR set @ 256 and CDVT set to something
> very large

Right, that's what I meant (and what I do).

> (BTW, I think there is a new proposed QOS called UBR+
> that allows you to specify UBR traffic with PCR, or
> was it MCR?)

MCR.  It used to be called UBR+.  The current name is
GFR (Guaranteed Frame Rate).

	paul