IPTV and vdsl
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Posted by on August 7, 2006, 9:21 pm
Please log in for more thread options (http://www.uverseusers.com/ ) I have been following IPTV and I was a little disappointed to learn that AT&T's U-verse internet (VDSL: next gen dsl) will only have a max speed of 6mb's. One reason is that since VDSL is next generation dsl it still relies upon copper twisted pair telco technolgy. The other reason is that HDTV utilizes 1.5gb of bandwidth. The strange thing is that VDSL is supposed to have a bandwidth of 20gb's. The more likely scenario is that the current VDSL chips are first generation. Will be interesting to see what happens in any case. | |||||||||||||||||||
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Posted by kingpen on August 7, 2006, 10:03 pm
Please log in for more thread options I don't believe the average person's internet needs would exceed 6M. Is the 6M for internet or for internet/video/voice? I thought it was just for the internet. On a good day you'll avg about 500 kb/s or about 4M when you download a file on the internet. The WEB pages won't appear any faster with a higher speed. The internet is not capable of effieciently utilizing bandwidth. I suspect the video BW portion, which will be much more than 6M will make better use of BW since it will be streaming from a provider that will have control over quality of service. Thanks King randall.shimizu@gmail.com wrote: | |||||||||||||||||||
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Posted by DLR on August 8, 2006, 8:41 am
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For mom checking email and watching the occasional Fox News video clip, maybe. But with 3 or 4 computers in a house, one browsing photos of their school trip, another watching last nights Lost episode, and someone else downloading that big email with the spread sheet from work, well, it does mater. A LOT. kingpen wrote: > I don't believe the average person's internet needs would exceed 6M. Is
> the 6M for internet or for internet/video/voice? I thought it was just > for the internet. On a good day you'll avg about 500 kb/s or about 4M > when you download a file on the internet. The WEB pages won't appear > any faster with a higher speed. The internet is not capable of > effieciently utilizing bandwidth. I suspect the video BW portion, > which will be much more than 6M will make better use of BW since it > will be streaming from a provider that will have control over quality > of service. > > Thanks > King > > randall.shimizu@gmail.com wrote: >> (http://www.uverseusers.com/ )
>> >> I have been following IPTV and I was a little >> disappointed to learn that AT&T's U-verse internet >> (VDSL: next gen dsl) will only have a max speed of >> 6mb's. >> >> One reason is that since VDSL is next generation dsl >> it still relies upon copper twisted pair telco >> technolgy. The other reason is that HDTV utilizes >> 1.5gb of bandwidth. The strange thing is that VDSL is >> supposed to have a bandwidth of 20gb's. The more >> likely scenario is that the current VDSL chips are >> first generation. Will be interesting to see what >> happens in any case. >
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Posted by Jim on August 8, 2006, 12:07 pm
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randall.shimizu@gmail.com wrote on 8/7/2006 9:21 PM: > (http://www.uverseusers.com/ )
Randall,
> > I have been following IPTV and I was a little > disappointed to learn that AT&T's U-verse internet > (VDSL: next gen dsl) will only have a max speed of > 6mb's. > > One reason is that since VDSL is next generation dsl > it still relies upon copper twisted pair telco > technolgy. The other reason is that HDTV utilizes > 1.5gb of bandwidth. The strange thing is that VDSL is > supposed to have a bandwidth of 20gb's. The more > likely scenario is that the current VDSL chips are > first generation. Will be interesting to see what > happens in any case. > You couldnt be more wrong on everything you said. HDTV needs 1.5gb of bandwidth? VDSL is supposed to support 20Gbs of bandwidth? Wow... The fact you state it with such authority is amazing. Jim | |||||||||||||||||||
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Posted by stephen on August 10, 2006, 5:57 pm
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> randall.shimizu@gmail.com wrote on 8/7/2006 9:21 PM:
> > (http://www.uverseusers.com/ )
> > > > I have been following IPTV and I was a little > > disappointed to learn that AT&T's U-verse internet > > (VDSL: next gen dsl) will only have a max speed of > > 6mb's. > > > > One reason is that since VDSL is next generation dsl > > it still relies upon copper twisted pair telco > > technolgy. The other reason is that HDTV utilizes > > 1.5gb of bandwidth. The strange thing is that VDSL is > > supposed to have a bandwidth of 20gb's. The more > > likely scenario is that the current VDSL chips are > > first generation. Will be interesting to see what > > happens in any case. > > > Randall,
> > You couldnt be more wrong on everything you said. HDTV needs 1.5gb of > bandwidth? uncompressed HDTV with 1080i format uses around 1.5 Gbps of bandwidth. This has already come up at work :) However, normally uncompressed 1080i is only for studio work - it gets squeezed down a lot for delivery over a TV broadcast channel, cable or even DVD, since the transmission medium cannot handle the raw data rate. Eventual data rate to air is in Mbps, not Gbps. VDSL is supposed to support 20Gbs of bandwidth? >
> Wow... The fact you state it with such authority is amazing. 50 Mbps or so AFAIR. But there is a tradeoff between data rate and distance. FWIW ADSL 2+ is being rolled out here (UK) Although this is supposedly good for 15 or 20 Mbps, BT has chosen to run rate adapted, but to limit their DSLAMs to run at 8 Mbps max That way they have a standard official rate they can actually get to a reasonable percent of customers. >
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> Jim Regards stephen_hope@xyzworld.com - replace xyz with ntl | |||||||||||||||||||
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>
> I have been following IPTV and I was a little
> disappointed to learn that AT&T's U-verse internet
> (VDSL: next gen dsl) will only have a max speed of
> 6mb's.
>
> One reason is that since VDSL is next generation dsl
> it still relies upon copper twisted pair telco
> technolgy. The other reason is that HDTV utilizes
> 1.5gb of bandwidth. The strange thing is that VDSL is
> supposed to have a bandwidth of 20gb's. The more
> likely scenario is that the current VDSL chips are
> first generation. Will be interesting to see what
> happens in any case.