nanog mailing list archives
Re: Fwd: Rollup: Small City Municipal Broadband
From: Scott Helms <khelms () zcorum com>
Date: Sat, 2 Feb 2013 21:29:23 -0500
Jason, Yeah, that's what I figured. There are lots of older PON deployments that used the modulated RF approach. On Sat, Feb 2, 2013 at 9:03 PM, Jason Baugher <jason () thebaughers com> wrote:
On Feb 2, 2013 3:33 PM, "Scott Helms" <khelms () zcorum com> wrote:......This is not correct. DOCSIS is an MPEG stream over QAM or QPSKmodulationand there is nothing about it that is compatible to any flavor of PON.Infact if you look at the various CableLabs standards you'll see DPoE ( http://www.cablelabs.com/dpoe/specifications/index.html) which listshow aDOCSIS system can inter-operate and provision an PON system. If you lookat Jay may be referring to something I alluded to earlier, what Calix refers to as RF overlay. The RF signal from the traditional cable system is converted to 1550nm and combined onto the PON before the splitter with a CWDM module. Certain model ONT's split the 1550 back off and convert back to an RF port.
-- Scott Helms Vice President of Technology ZCorum (678) 507-5000 -------------------------------- http://twitter.com/kscotthelms --------------------------------
Current thread:
- Rollup: Small City Municipal Broadband Jay Ashworth (Feb 02)
- Re: Rollup: Small City Municipal Broadband Scott Helms (Feb 02)
- Re: Rollup: Small City Municipal Broadband Jay Ashworth (Feb 02)
- Re: Rollup: Small City Municipal Broadband Scott Helms (Feb 02)
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- Fwd: Rollup: Small City Municipal Broadband Scott Helms (Feb 02)
- Re: Fwd: Rollup: Small City Municipal Broadband Brandon Ross (Feb 02)
- Re: Fwd: Rollup: Small City Municipal Broadband Scott Helms (Feb 02)
- Re: Fwd: Rollup: Small City Municipal Broadband Tim Jackson (Feb 02)
- Re: Rollup: Small City Municipal Broadband Jay Ashworth (Feb 02)
- Re: Rollup: Small City Municipal Broadband Jay Ashworth (Feb 02)
- Re: Fwd: Rollup: Small City Municipal Broadband Jason Baugher (Feb 02)
- Re: Fwd: Rollup: Small City Municipal Broadband Scott Helms (Feb 02)
- Re: Fwd: Rollup: Small City Municipal Broadband Jean-Francois Mezei (Feb 02)
- Re: Rollup: Small City Municipal Broadband Jay Ashworth (Feb 02)
- Re: Rollup: Small City Municipal Broadband Jean-Francois Mezei (Feb 02)
- Re: Rollup: Small City Municipal Broadband Jay Ashworth (Feb 03)
- Re: Rollup: Small City Municipal Broadband Leo Bicknell (Feb 03)
- Re: Rollup: Small City Municipal Broadband Scott Helms (Feb 03)
- Re: Rollup: Small City Municipal Broadband Joe Abley (Feb 03)
- Re: Rollup: Small City Municipal Broadband Scott Helms (Feb 03)
- Re: Rollup: Small City Municipal Broadband Fletcher Kittredge (Feb 03)
- Re: Rollup: Small City Municipal Broadband Scott Helms (Feb 03)
- Re: Rollup: Small City Municipal Broadband Scott Helms (Feb 02)