[opendtv] Re: News: The Internet revolution is about to be televised

On Mon, 28 Feb 2005 10:08:48 -0500, Craig Birkmaier <craig@xxxxxxxxx> wrote:
> At 6:57 PM -0500 2/26/05, Manfredi, Albert E wrote:
> >That was a refreshingly good post on this subject, Doc.
> 
> Agreed! I agree with almost everything that John wrote. But Bert
> quickly steered the thread back into the ditch.
> 
> John wrote:
> 
> >  > So we end up with a VPN to each house, no real
> >>  interconnect between neighbors until we get fairly
> >>  high up the distribution tree in the network.  This
> >>  negates the localization effect of a neighborhood
> >>  PTP network and the advantage of that approach.
> >
> >It also looks much more like a cable network. And
> >it's more compatible with a PON cable plant. I don't
> >know whether the PON is a common solution for IPTV or
> >not, however. Do you have an idea on this?
> 
> Wrong. It does NOT look like a cable network. At the core, cable
> networks are based on local loops in the neighborhood. EVERY home in
> the neighborhood receives the same bits; they tune into broadcast
> services, or they pull packets that are being routed to their home
> (that are ALSO routed to every home on that loop).

I was in a meeting last week with some cableish vendors and they were
talking about the MSOs moving to a (not the right technical name )
switched video delivery nearer the edge.  Basically IP multicast with
RF channel multiplexing instead of a shared Ethernet network.  They
said that the MSOs were starting to deploy this and that it is an
intermediate step toward full IP network.  I hadn't heard of this
functionality before.

This makes an IPTV and a MSO network look just about the same from an
application perspective.

Any cable people know anythig about this?

Doc
 
 
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