deadzonedPremium
join:2005-04-13
Baton Rouge, LA | I remain unconvinced... I just don't see how DOCSIS 3.0 can even compete with a fiber to the home connection.
Maybe I am missing something but isn't it true that while you may have the hardware to deliver certain speeds to a computer you still need to have the capabilities to send those speeds to that hardware? In other words, it's still being sent over a hybrid fiber/coax connection and thus will be limited to whatever speed coax can handle right?
I mean a FTTH connection will be much speedier than any type of hybrid fiber/coax connection correct? |
|
|
|
| Your mistake is thinking coax can't handle speed. Verizon's initial tests pegged old-arse coax lines at 300Mbit or thereabouts capability...As fast as fiber? Of course not. Lots of life left yet? Absolutely. |
|
 MattAll noise, no signal.Premium
join:2003-07-20
Jamestown, NC
kudos:12 | reply to deadzoned
said by deadzoned:I just don't see how DOCSIS 3.0 can even compete with a fiber to the home connection. Maybe I am missing something but isn't it true that while you may have the hardware to deliver certain speeds to a computer you still need to have the capabilities to send those speeds to that hardware? In other words, it's still being sent over a hybrid fiber/coax connection and thus will be limited to whatever speed coax can handle right? I mean a FTTH connection will be much speedier than any type of hybrid fiber/coax connection correct? Coax is capable of gigabit speeds with the right equipment. Coax may be old, but it has HUGE bandwidth potential.
Fiber is definitely the better of the two technologies, but the HFC plant allows the cable companies to push fiber closer and closer to the end users, all while offer faster speeds.
Business Class customers in my area can already get VERY reasonably priced direct fiber connections from Time Warner, so if they wanted, they could drop FiOS-type money and start installing FTTH. Unlike most people here who think - "lolrz, teh fibers r00l!" - there's no reason for most cable companies to do it ... yet.
I've got a FTTH connection from my local ILEC and for browsing and email, it's just as fast as the cable modem I had for years and years.
--
Pretty Fly for a White Guy™ |
|
| reply to deadzoned
said by deadzoned:I just don't see how DOCSIS 3.0 can even compete with a fiber to the home connection. Maybe I am missing something but isn't it true that while you may have the hardware to deliver certain speeds to a computer you still need to have the capabilities to send those speeds to that hardware? In other words, it's still being sent over a hybrid fiber/coax connection and thus will be limited to whatever speed coax can handle right? I mean a FTTH connection will be much speedier than any type of hybrid fiber/coax connection correct? You are making the same mistake as a lot of the other misinformed people around here. Its not the coax cable that is limiting the speed. It is the technology running the networks of the cable companies that is the problem.
Just look , Why is it that narad was (went belly up) able to get 100/100 connections on each house on the node using coaxial cables while docsis can only have each house share 100/100?
Its all in the equipment running the network not the coaxial cable itself.
This is also not including new coaxial cable that has higher frequencies. |
|
 dvd536as Mr. Pink as they comePremium
join:2001-04-27
Phoenix, AZ
kudos:4 | reply to deadzoned
said by deadzoned:I just don't see how DOCSIS 3.0 can even compete with a fiber to the home connection. it can't and never will beat a true FTTH product. i wonder what QAM you need to get 120mbps upload on a node? As you raise QAM, areas with iffy lines will have issues.
--
You can never be too rich, too thin or have too much Bandwidth |
|
| reply to majortom1029
you do not know much about the physics of metal. Metal is NOT a good conductor of electricity, you have to coerce the signals through the lines which results in impure, sporadic and not so good signals. Optical cables through plastics or glass is a lot better, little impedance. Read on physics prior to making statements that are not true. |
|
| reply to majortom1029
As I remember Narad equipment delivered symettrical 100Mbit to a tap not to every single home on a node. It bypassed the legacy coax amps and diplexes to avoid the 40/54MHz subsplit and 860MHz top end on networks but it certainly didn't deliver dedicated 100Mbit to each home.
Still nowhere near a match for the 2.4Gbit down 622Mbit up GPON networks and if you're going to be replacing equipment wholesale as would be required to deliver Narad services you may as well just overlay with fibre. |
|
| reply to dvd536
said by dvd536:said by deadzoned:I just don't see how DOCSIS 3.0 can even compete with a fiber to the home connection. it can't and never will beat a true FTTH product. i wonder what QAM you need to get 120mbps upload on a node? As you raise QAM, areas with iffy lines will have issues. Considering the lack of upstream spectrum available with all the other services and legacy DOCSIS 1.1 running you'd be lucky if not a miracle worker to even find the 25.6MHz of spectrum you'd need to get 120Mbps.
To answer your question 4 x 6.4MHz upstreams running A-TDMA 64QAM. |
|
| reply to deadzoned
Idiot, Fios uses existing coaxial in home. |
|
