Rollup: Small City Municipal Broadband

Sun Feb 3 13:29:39 UTC 2013

Frank,

I don't know off hand, but it ought to be easy even though Ethernet uses a
wider "channel" than most PON set ups.  I'll do some asking tomorrow.

On Sun, Feb 3, 2013 at 1:07 AM, Frank Bulk <frnkblk at iname.com> wrote:

> Scott:
>
> Is there a vendor that supports RFoG on the same strand as ActiveE?
>
> Frank
>
> -----Original Message-----
> From: Scott Helms [mailto:khelms at 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 at 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
> --------------------------------
>
>
>

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