Official Cox@Home policies

[David Knight]

Nick Bastin wrote:
> 
> on 11/11/99 12:35 AM, Darin Sugioka at darins at nosc.mil wrote:
> 
> > What is the uBr? and yes I am uploading the ISO. Also I would think this cap
> > would severely limit the ability to do Video-Tele-Confrencing.
> 
> Universal Broadband Router.  It's a piece of ATM equipment that uses sh*tty
> ATM QoS to regulate your bandwidth.  I think you'll probably end up having
> more of an issue with *how* your bandwidth is limited, rather than the fact
> that it is.  You'll see what I mean when they turn it on.. :-)   Also, you
> have to keep in mind that Cox intends its' service for downstream use
> (whether they say it or not), and they don't really care if your
> videoconferencing works or not.  On the other hand, 25-30K/sec is plenty of
> upstream for pretty decent video using Quicktime or RV.  I'd imagine that
> you are going to see Cox implement ATM QoS on a large scale on their
> network, first just to limit customer bandwidth, and then, if they're
> successful with that, to create virtual 'circuits' for certain applications,
> like video.
> 

No ATM QOS with DOCSIS (Cisco UBRs or other CMTSs).  The real DOCSIS
QOS comes with DOCSIS 1.1.  
Some good info at http://www.surfboard.com/ in the DOCSIS area.  

Motorola CDLP routers also do not use ATM for QOS.   

Cox SD does use ATM but for regional transport of @Home traffic, no
QOS is applied at the ATM level to that traffic.

Just the facts, I'll leave the name calling to you guys.

David Knight