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uniqs
201
tim tim tim
join:2010-08-14
Lutz, FL

tim tim tim

Member

ftth is too expensive.

With the costs of FTTH, this is a much better alternative.

Cable is already able to do 100+ down (if I remember correctly Comcast demonstrated 1gps down on live plant?) Its not the capability that's lacking, its the need. 95% of households are perfectly fine with 10/1 service so investing millions for less than 5% who aren't happy with the 40-50/5ish services already offered isn't logical, yet.

The FTTH speeds dont look so impressive when you look at where cable is at when you figure the cost difference between the 2. Its only a matter of time until they increase the spectrum for the upstream. Its too noisy in the sub low band to do much more than a 64qam (which is already a huge challenge) so there going to have gain more spectrum.

kevinds
Premium Member
join:2003-05-01
Calgary, AB

kevinds

Premium Member

Here, DOCSIS3 plans are up to 250mbps, so very easy to do 100mbps.

And the Comcast user who can't get 12/2 with a SB510x, DOCSIS3 will likely help you, it might not. The SB510x modems will only use one channel, a number of them on your node doing lots of traffic, will saturate the single channel, DOCSIS3, will use 2-8 channels, spreading the traffic out to different channels on compatible modems.

Single channel is ~38mbps, so if you have 3 modems trying to do 12/2, that will work, but there is not enough bandwidth to do 4 modems at full speed on DOCSIS2 on a node.
majortom1029
join:2006-10-19
Medford, NY

majortom1029 to tim tim tim

Member

to tim tim tim
Cablelabs is looking into epoc to get 10gigabits/10gigabit speeds over coax.

Unlike telephone cable , coax is not the barrier for speed. Just like fiber its the equipment at either end thats the problem.

Also they are looking into basically having docsis over fiber. This will allow cablecompanies to roll out fiber to new construction while still using coax.

The cable companies do not have to upgrade to fttp anytime soon. Heck even Verizon stopped their roll out.

Joe232
@comcast.net

Joe232 to kevinds

Anon

to kevinds
Yes, operating on several channels at a slower speed will make up for limitations on a single channel. An added bonus is that the connection won't drop or have terrible packet loss like trying to run near 99% of modem's RF ability will.