RE: Rollup: Small City Municipal Broadband

[Warren Bailey <wbailey () satelliteintelligencegroup com>]

Don't know what frequency they use but ppm.co.uk does all the way to 14ghz (our ku band) over dwdm..


> From my Android phone on T-Mobile. The first nationwide 4G network.



-------- Original message --------
From: Frank Bulk <frnkblk () iname com>
Date: 02/02/2013 10:10 PM (GMT-08:00)
To: 'Scott Helms' <khelms () zcorum com>,NANOG <nanog () nanog org>
Subject: RE: Rollup: Small City Municipal Broadband


Scott:

Is there a vendor that supports RFoG on the same strand as ActiveE?

Frank

-----Original Message-----
From: Scott Helms [mailto:khelms () zcorum com]
Sent: Saturday, February 02, 2013 3:30 PM
To: NANOG
Subject: Fwd: Rollup: Small City Municipal Broadband

> But it doesn't matter either way, except in cross-connects between my MDF
> and my colo cages; except for GPONs apparent compatibility with RF CATV
> delivery (which I gather, but have not researched) is just
block-upconvert,
> I don't care either way; there's no difference in the plant buildout.

This is not correct.  DOCSIS is an MPEG stream over QAM or QPSK modulation
and there is nothing about it that is compatible to any flavor of PON.  In
fact if you look at the various CableLabs standards you'll see DPoE (
http://www.cablelabs.com/dpoe/specifications/index.html) which lists how a
DOCSIS system can inter-operate and provision an PON system. If you look at
the two largest PON networks (FIOS and Uverse) you'll see the two different
approaches to doing video with a PON architecture.  Verizon is simply
modulating a MPEG stream (this is block compatible to a cable plant, in
fact its the same way that a HFC network functions) on a different color on
the same fiber that they send their PON signalling.  ATT takes another
approach where they simply run IPTV over their PON network.  I've listened
to presentations from Verizon's VP of Engineering (at that time) for FIOS
and he said their choice was driven by the technology available when they
launched and they did modulated RF over their fiber instead of IPTV because
that technology wasn't as mature when they started. Verizon's approach may
be what someone was thinking of when they said that PON was compatible to
cable signaling but that's not how it works.


> Cheers,
> -- jra
> --
> Jay R. Ashworth                  Baylink
> jra () baylink com
> Designer                     The Things I Think                       RFC
> 2100
> Ashworth & Associates     http://baylink.pitas.com         2000 Land
> Rover DII
> St Petersburg FL USA               #natog                      +1 727 647
> 1274



--
Scott Helms
Vice President of Technology
ZCorum
(678) 507-5000
--------------------------------
http://twitter.com/kscotthelms
--------------------------------



--
Scott Helms
Vice President of Technology
ZCorum
(678) 507-5000
--------------------------------
http://twitter.com/kscotthelms
--------------------------------