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 <frnk...@iname.com> wrote: > Scott: > > Is there a vendor that supports RFoG on the same strand as ActiveE? > > Frank > > -----Original Message----- > From: Scott Helms [mailto:khe...@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 > > j...@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 --------------------------------
