On Tue, 1 Dec 2009, Dan White wrote:
However, there are some advantages to GPON - particularly if you're deploying high bandwidth video services. PON ONTs share 2.4Gb/s of bandwidth downstream, which means you can support more than a gig of video on each PON, if deploying in dense mode.
You don't need to supply more than a gig per household, so active gige (or 100meg) is enough to feed the household with their broadcast video needs. So yes, you will need 10GE to the node and 100/1000 to each household do this this kind of video. PON only makes sense with low take-rates and high per-truckroll costs when I did the business case last time.
Another big advantage is in CO equipment. A 4-PON blade in a cabinet is going to support on the order of 256 ONTs.
But you lose out on the CPEs, at least historically these were much more expensive than the 100FX/TX media converters available in the market. -- Mikael Abrahamsson email: swmike@swm.pp.se