Thread: 50Mbit Service Upstream Discussion
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Old 25-01-2009, 15:16   #110
Turkey Machine
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Re: 50Mbit Service Upstream Discussion
Quote:
Originally Posted by Broadbandings View Post
I would very much agree with you on this one, and there's no reason beyond a lack of interest in providing it that it isn't.

I really wish I could give a 5 minute explanation of why that's nice and easy to soak in but it's not the easiest thing to explain.

Please see the attachment for the upstream channels that are available to cable operators. These are single channels, no bonding involved. Comcast are using the one on the far right to deliver 10Mbps upstream on their 50Mbit product. Virgin have been using 2nd from left and 4th from left so far on their DOCSIS 3 deployment, and have been having issues with SNR in some areas with those.
All the new modems issued by Virgin on all their tariffs are at least DOCSIS 2.0 capable. Why the hell haven't they enabled them like that? Moreover, yes they're DOCSIS 1.0/1.1 backwards-compatible, but even a small increment to DOCSIS 1.1 would yield a 20% increase in available bandwidth according to that graph! How trivial is it to implement such a thing on Virgin's end? If a Virgin employee can answer me that question directly, I'll be very happy to know.

I hate the fact they tout it as "the mother of all broadband", when other ADSL providers spank them in* the download speed stakes, reliability, and upload speed stakes.

*for some customers.
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