| reply to Ignite
Re: ??? said by Ignite:said by fifty nine:DOCSIS3 cable is capable of up to 107MBps up. ADSL2 can only offer 896kb up. In the future DOCSIS can be expanded for gigabit speeds as well. ADSL2+ Annex M is good for 2.5Mbit, ADSL2 1.3Mbit. DOCSIS isn't going to offer near 107Mbps per customer upstream for quite some time. 4 channel DOCSIS3 already can.
The cable companies probably won't deploy it yet because there's no real need for it for home users right now. In fact most home users would get by just fine with less than 512k. |
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 IgnitePremium,VIP
join:2004-03-18
UK | said by fifty nine:4 channel DOCSIS3 already can. The cable companies probably won't deploy it yet because there's no real need for it for home users right now. In fact most home users would get by just fine with less than 512k. Every customer gets their own node, 4 ports of a CMTS card, and 25.6MHz of upstream spectrum @ 64QAM?
Note that I said 'per customer' not 'per MAC domain'. What the technology can do across what's probably 1000+ modems sharing the bandwidth is irrelevant as, unlike DSL, it's not a dedicated link between CPE and provider.
DOCSIS 3 upstreams won't exceed those levels until analogue is gone from cable networks and plant has loads of work done on it due to NTSC restricting subsplit sizes, upstream spectrum is 5 - 40MHz at best in North America, and not all of that usable due to noise.
Theory wise, sure, practically, not going to happen.
Also worth bearing in mind that the oft quoted '160Mbit downstream 120Mbit upstream' capabilities of 4 channel in both direction are not actually the case either. Real maximum downstream throughput with wind in sails and down hill will be around 152Mbit and upstream around 106Mbit. |
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 en102Canadian, eh?
join:2001-01-26
Valencia, CA | reply to fifty nine
Can or Will.
Just because 4 channel DOCSIS can offer 107Mbps upstream doesn't mean that they will be selling it anytime soon.
Similarly - VDSL2 offers connections +50Mbps - I don't see AT&T pushing for it either.
With the economy with its tail between its legs - don't expect much - many will be dropping to a lower tier (or cancelling services). Companies will still make money - as lower tiered services are typically priced higher/kbps in order to make them appear less attractive for use. |
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 espaethDigital PlumberPremium,MVM
join:2001-04-21
Minneapolis, MN
kudos:2
 ·Clear Wireless
| reply to fifty nine
Is there a single provider that has upstream bonding working yet?
Last time I looked only the Arris CMTS even claimed to support upstream bonding right now. |
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Cakk
join:2009-03-31
Chesterfield, MO | reply to fifty nine
Well it depends what they do. |
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