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 <ja...@thebaughers.com> wrote: > > On Feb 2, 2013 3:33 PM, "Scott Helms" <khe...@zcorum.com> wrote: > > > ...... > > > 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 > > 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 --------------------------------