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Forums » Canada First To Get Pre-Cert DOCSIS 3.0 Speeds » Yeah
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ossito16

join:2004-07-31
Whiting, IN
·RCN CABLE

reply to ShadezeRO
Re: Yeah

said by ShadezeRO See Profile :

I give props on being first.

But what's the point if the connection is going to be throttled/capped? =\
I had the same question. What would the purpose be to have such high speeds if ISP's want to regulate, censor, and throttle our connections. With torrent sites falling like flies who needs high speed. I could imagine these clowns offering 280mbps down and 5mbps up.


Jerm

join:2000-04-10
Richland, WA

Actually that is probably correct. Videotron is using *pre-cert* gear and if you read up on it, almost all the pre-cert gear's main flaw is it does NOT support UPSTREAM channel bonding!

Which means while they can offer 300mbps + down, on the up it will still be 30mbps SHARED upstream for all users on that section!


odog
Cable Centric Vendor Biased
Premium
join:2001-08-05
Norcross, GA
clubs:
·Metrocast Communic..
·Comcast
·Vonage

Considering most upstreams are only running in D1.1 3.2MHz QAM16 and thus limited to 10Mbps using a D2.0 6.4MHz 64QAM upstream and a 4 X 256QAM downstream you'd have 160Mbps down/30Mbps up shared among 500-600 users. Upstream channel bonding is definitely going to be killer but traffic is still asymmetrical to the net so downstream is MUCH more important.


tater_gunz
Shoot to kill
Premium
join:2003-08-22
Toledo, OH
·buckeye cable

Well said. Of course, we're assuming their plant is clean enough to run QAM64 returns (which is probably a safe assumption since they're spending time and money on pre-cert DOCSIS 3.0 gear in the first place). Nevertheless, there are still plenty of modems out there chugging along with QPSK!

- Tate

--
Happiness is an OC-48 in your basement...


odog
Cable Centric Vendor Biased
Premium
join:2001-08-05
Norcross, GA
clubs:
I prefer to call QPSK...

QAM4, but hey that's just my glass half full mind seeing the bright side of things.

crapmac
Good 'ol Cali.

join:2007-05-03
California
·Comcast

reply to odog
Re: Yeah

said by odog See Profile :

Considering most upstreams are only running in D1.1 3.2MHz QAM16 and thus limited to 10Mbps using a D2.0 6.4MHz 64QAM upstream and a 4 X 256QAM downstream you'd have 160Mbps down/30Mbps up shared among 500-600 users. Upstream channel bonding is definitely going to be killer but traffic is still asymmetrical to the net so downstream is MUCH more important.
English, please.
--
Out with the old, in with the Antique!
***********
"Hey, have you heard the song... 'Bomb Iran?' *bomb, bomb, bomb, bomb, bomb, Ir...* n - never mind..." - John McCain
Forums » Canada First To Get Pre-Cert DOCSIS 3.0 Speeds


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