| The real question is who shares the line If it's FTTN and then using DOCSIS over coax to the homes, then you're sharing that coax bandwith with your neighbors. If you all want to stream netflix at 7pm, then it grinds to a halt ....regardless if it's fiber or shoes strings in the middle mile.
Now if it's FTTH, then no DOCSIS is involved and you're only sharing bandwidth at the middle-mile level. The in-house wireless/copper/coax "hybrid" portion of FTTH is irrelevant because that bandwith isn't shared with anyone other than you. You have possibly Gb/s worth of bandwidth in the non-fiber portion of your in-house network. |
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| UGH it has nothing to do with the coax and everything to do with the topology. Narad networks had stuff that used coax that gave every house 100/100 switched speeds to every house.
Moca even states that coax can handle 250 in each direction.
So dont blame the medium blame the way docsis uses it. |
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Reviews:
 ·Armstrong Zoom ..
| reply to Michael C
FTTH is a shared, last mile service. You do not have a strand of fiber directly from the backbone to your house. You have a fiber strand that is shared with all your neighbors. There are splitters, and other pieces implemented, to share that last mile. Ironically, it is very similar to coax networks.
One might go ahead and argue that FTTH has a longer last mile compared to coax networks. Coax networks have a node, with fiber to them in your neighborhood, which then branches off coax. FTTH runs coax, with passive splitters all the way from the CO to your home... again split up along the way. Light degrades over length just like any other signal.
Kind of stupid to argue over the details?
I have fiber to my home. And no, it is not from Verizon and NOT split from the data center to me. (Yes, real PTP fiber)
Big deal. I also have DirecTV for the television service.
It means squat... what matters is that I get the services I want, at the costs I want. I use Teliax for voice too. |
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 jmn1207Premium
join:2000-07-19
Ashburn, VA | said by keyboard5684:FTTH is a shared, last mile service. You do not have a strand of fiber directly from the backbone to your house. You have a fiber strand that is shared with all your neighbors. There are splitters, and other pieces implemented, to share that last mile. Ironically, it is very similar to coax networks. Very similar, except that it has an enormous advantage in available bandwidth to each customer as compared with today's coaxial to the premises connections using DOCSIS technology.
said by keyboard5684:FTTH runs coax, with passive splitters all the way from the CO to your home... again split up along the way. Light degrades over length just like any other signal. Coax does not run all the way to my home using Verizon FiOS service. There is a fiber line connecting from an ONT (GPON) on the side of my house to an optical splitter (24 splits) at the CO or some intermediary location. The signal degradation in fiber optics is significantly lower than that experienced with copper. With recent advances in this technology, it's not even remotely close between the two.
said by keyboard5684:Kind of stupid to argue over the details? It helps if the details make sense and are not confusing and misleading. |
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 SYNACKJust Firewall ItPremium,Mod
join:2001-03-05
Venice, CA
Networking
Virtual Private Ne..
Netgear
ZyXEL
| reply to keyboard5684
said by keyboard5684:FTTH is a shared, last mile service. You do not have a strand of fiber directly from the backbone to your house. You have a fiber strand that is shared with all your neighbors. ...FTTH runs coax... Kind of stupid to argue over the details? (FTTH does NOT run coax(!) but fiber, and it is split exactly once into 32 fibers for 32 subscribers in the case of FIOS.)
I agree, and arguing about sharing the last mile is completely pointless. All public servers on the internet are shared by all clients connecting to them, anything more than a few hops away goes over shared trunk lines, etc.
That meaningless "sharing" arguments was invented long ago by DSL in order to look better compared to cable. It is only relevant for oversubscribed nodes. |
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| reply to Michael C
said by Michael C:If it's FTTN and then using DOCSIS over coax to the homes, then you're sharing that coax bandwith with your neighbors. If you all want to stream netflix at 7pm, then it grinds to a halt ....regardless if it's fiber or shoes strings in the middle mile. Now if it's FTTH, then no DOCSIS is involved and you're only sharing bandwidth at the middle-mile level. The in-house wireless/copper/coax "hybrid" portion of FTTH is irrelevant because that bandwith isn't shared with anyone other than you. You have possibly Gb/s worth of bandwidth in the non-fiber portion of your in-house network. Actually Verizon FiOS shares the fiber 32 ways, so 32 subscribers share one strand via a PON.
DOCSIS has nothing to do with fiber/coax. You can do DOCSIS over fiber right to the home via RFoG or even by making smaller nodes.
With the download speeds offered by mainstream fiber providers (Verizon and some ATT installs) the difference between fiber and coax in terms of the end user experience is virtually nil for a properly sized and managed network. |
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patcat88
join:2002-04-05
Jamaica, NY
kudos:1 | reply to majortom1029
No, that was 100/100 per fiber node, and if you run parallel coaxs along the center of the coax tree of the node you'll be able to give each customer a dedicated 100/100, Cablevision was planing to have 50/50 anyways. And its only advantage was quicker time to market than DOCSIS 3 (were still waiting for upstream bonding from manufacturers), and using out of band spectrum (over 1 GHZ) that wouldn't steal 6mhz QAMs. Narad was positioned as a replacement for SONET/FTTB for SLA commercial customers, using it for non-SLA wasn't really intended. |
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patcat88
join:2002-04-05
Jamaica, NY
kudos:1 | reply to keyboard5684
said by keyboard5684:FTTH is a shared, last mile service. You do not have a strand of fiber directly from the backbone to your house. You have a fiber strand that is shared with all your neighbors. There are splitters, and other pieces implemented, to share that last mile. Ironically, it is very similar to coax networks. But PON fiber is infinity/32, unlike coax. Compare upgrading a PON node to doing a spectrum upgrade on coax plant. |
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patcat88
join:2002-04-05
Jamaica, NY
kudos:1 | reply to fifty nine
said by fifty nine:Actually Verizon FiOS shares the fiber 32 ways, so 32 subscribers share one strand via a PON. Its usually less, even if 100% of houses subscribed (which isn't possible), from what I've counted on the poles, its 1.3 to 1.7 fiber ports per house. There is plenty of spare fibers and spare capacity on VZ's nodes. Now if FIOS is extended to rural areas without cable (haha), suddenly I wonder if 2.5/1.25 gbps is enough for all the homes on the splitter. |
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| reply to jmn1207
Yes, I meant fiber... ooops.
FTTH runs coax, with passive splitters ...... |
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Reviews:
·Armstrong Zoom ..
| reply to patcat88
I think that if a cable provider wanted to, they could have a really easy time running fiber to the home. Right now they already have fiber all over there coverage area and that is usually a little bigger than Fios. So with the nodes already established, there is not too much stopping them from investing in fiber to the home.
In my area, this is being done by many small cable providers, not the big ones...
And I think that the next "spectrum upgrade" will just be done with fiber. There is no sense in running thicker cable, or splitting up nodes more, when they could just do a node in all fiber. |
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jmn1207Premium
join:2000-07-19
Ashburn, VA | said by keyboard5684:I think that if a cable provider wanted to, they could have a really easy time running fiber to the home. Right now they already have fiber all over there coverage area and that is usually a little bigger than Fios. So with the nodes already established, there is not too much stopping them from investing in fiber to the home. In my area, this is being done by many small cable providers, not the big ones... And I think that the next "spectrum upgrade" will just be done with fiber. There is no sense in running thicker cable, or splitting up nodes more, when they could just do a node in all fiber. The cost of the "last mile" run is the most difficult to project. It ain't cheap. Cable providers have not moved to fiber because they cannot afford to, in the same manner that Verizon was supposedly not able to do. When it happens, I will be the first to call Comcast to sign up. Until then, I will continue to be extremely happy with my FiOS service. Solid as a rock. |
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| They can afford to. If Comcast has enough money to buy NBC, they can afford to upgrade. They just don`t want to. |
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 dvd536as Mr. Pink as they comePremium
join:2001-04-27
Phoenix, AZ
kudos:4 | reply to fifty nine
said by fifty nine:said by Michael C:If it's FTTN and then using DOCSIS over coax to the homes, then you're sharing that coax bandwith with your neighbors. If you all want to stream netflix at 7pm, then it grinds to a halt ....regardless if it's fiber or shoes strings in the middle mile. Now if it's FTTH, then no DOCSIS is involved and you're only sharing bandwidth at the middle-mile level. The in-house wireless/copper/coax "hybrid" portion of FTTH is irrelevant because that bandwith isn't shared with anyone other than you. You have possibly Gb/s worth of bandwidth in the non-fiber portion of your in-house network. Actually Verizon FiOS shares the fiber 32 ways, so 32 subscribers share one strand via a PON. A lot less than the average cable node!
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When I gez aju zavateh na nalechoo more new yonooz tonigh molinigh - Ken Lee |
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 aefstoggaflmOpen Source FanPremium
join:2002-03-04
Bethlehem, PA
kudos:2
 ·Verizon Online DSL
| reply to sonicmerlin
said by sonicmerlin:They can afford to. If Comcast has enough money to buy NBC, they can afford to upgrade. They just don`t want to. Just wondering, why will they not?
Thanks
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Please use the "yellow (IM) envelope" to contact me and please leave the URL intact. |
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