odreian615
join:2006-01-18
Chicago, IL | I just want the whole 25Mbps+6Mbps pipe for the net
streams I dont need no stinking streams |
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Enlightener
join:2006-01-28
Cedar Park, TX
 ·AT&T U-Verse
1 edit | Moving on....
I just don't see how they can do it at 25mbps. Even if MPEG4 cuts the bandwidth in half, that's still 9mbps because 1080i ATSC is speced at 18mbps.
Drop in 2 streams and that's 18mbps, add in 6mbps for elite and that's 24mbps. Now where is the bandwidth for the two SDTV channels?
BTW my definition of `doing it` isn't cutting corners. If multiple stream requires reallocation of the internet bandwidth or overcompressing of 1280x1080 HD-Lite then count me out... Oh wait, I'm already out! I close on my new house tomorrow and DirecTV is coming on Monday. I have FTTP but I'll only use it for internet acess and a $8/mo basic line that I don't really even want. VOIP is alot cheaper.... |
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brianiscool
join:2000-08-16
Miami, FL | IPTV
I see the future in this, but not through the cable modem internet. Cable companies will cap bandwidth on purpose to prevent IPTV from taking off. Perhaps the phone companies will cut them a deal in the future. |
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Placebo
Premium
join:2005-12-14
Huntley, IL | Puhhhhleeeeease
Does anyone really think AT&T is going to squeeze all of that into their 25Mbps pipe????
It's the fiber, stupid! |
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en102
Canadian, eh?
join:2001-01-26
Valencia, CA | reply to Enlightener
Re: Moving on....
25 Mbps... hell, I can't even get a consistant 3Mbps... and there's VRAD boxes all over the city, and I have to hit the CO at 12k feet. |
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cwh
join:2006-05-14
San Antonio, TX | reply to Enlightener
They are probably going to raise the sync rate later this year. The ATT CFO recently said they were going to increase the bandwidth being deliverlied 60-70% this year. That would put the sync speed at 40 and not 25. |
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KingofCola
join:2007-02-07
Greer, SC | reply to Placebo
Re: Puhhhhleeeeease
U-Verse users post max sync rates of 50-60Mbs all the time, they are capped at 27Mbs. All AT&T has to do is raise the cap and you have your additional HD streams and increased HSI. Plenty of room to move. |
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jessegr
join:2005-03-05
Gatineau, QC | HD tv + pings
Would ping skyrocket if your watching HD streams. |
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fiber_man
Things Happen For A Reason
Premium
join:2001-01-27
Port Saint Lucie, FL | T-3= bandwidth
T-3 have been around for a long time running over copper up to 5000 ft. They are approximate 44 mbps. So with that information I would think they have plenty of room for the added streams.
--
GO NOLES!! |
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sporkme
drop the crantini and move it, sister
Premium,MVM
join:2000-07-01
Morristown, NJ
 ·Optimum Online
| said by fiber_man  :T-3 have been around for a long time running over copper up to 5000 ft. Copper in the form of two coax lines, mind you, not twisted pair... |
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dynodb
Premium,VIP
join:2004-04-21
Minneapolis, MN
| Cable vs IPTV = Cable vs DSL
I don't know the specifics behind AT&Ts IPTV offering, but the author is assuming worst-case scenarios of multiple, simultaneous HD and SD streams. It's true that they'd have a tough time providing a significant majority of customers with enough bandwidth to offer this.
Thing is, they don't have to.
Just as typically slower DSL competes successfully with faster cable broadband on price, IPTV could offer video with, say, a one HD stream limit- something the vast majority of people wouldn't even notice or care about if the price was right.
Yes, there are people who now or in the future will have multiple HD sets, but these likely will be a small minority of potential customers; even among those, many would accept having only one HD stream at a time for a lower price. |
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ronpin
Imagine Reality
join:2002-12-06
Nirvana
 ·AT&T Southwest
| said by dynodb :Yes, there are people who now or in the future will have multiple HD sets, but these likely will be a small minority of potential customers; even among those, many would accept having only one HD stream at a time for a lower price. 'problem is -- many will rely on "collective wisdom" -- i.e. "FTTN is limited". Still, with massive time shifting and WAP phone viewing -- coupled with predatory pricing -- this could be big! ( for the masses )
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Give up all hope for a better past. |
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jimbo2150
join:2004-05-10
Youngstown, OH
| reply to sporkme
Re: T-3= bandwidth
said by sporkme :said by fiber_man :T-3 have been around for a long time running over copper up to 5000 ft. Copper in the form of two coax lines, mind you, not twisted pair... They also keep throwing out bonded pair, but I don't know if that will even do it. What about those who are getting the service and don't have bonded? Will boosting the sync past the 'on-paper' limit work? What about those who are further out and are not seeing the in-city speeds? How far are they going to deploy?
To me, it is looking like AT&T is going to have too many variables in the future. Some of which probably won't be answered.
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- "Techie" Jim |
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nonymous
join:2003-09-08
Glendale, AZ | Qwest vdsl
Qwest has vdsl but uses a separate copper pair for each hdtv line. One gateway to three normal tv. Then one for one on the hdtv. |
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tschmidt
Premium,MVM
join:2000-11-12
Milford, NH | reply to dynodb
Re: Cable vs IPTV = Cable vs DSL
The problem facing DSL is that due to distance many subscribers are limited to 1500 or 768 kbps down. That makes any sort of IPTV a very tight squeeze. Much less HD IPTV.
/Tom |
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tschmidt
Premium,MVM
join:2000-11-12
Milford, NH
 ·Hollis Hosting
·Verizon Online DSL
·Fairpoint Communic..
| reply to jessegr
Re: HD tv + pings
If stream flows are well managed Ping will not be unduly affected. However: my guess when you say "would Ping skyrocket" what you are really asking is what happens to other flows, such as file transfer.
That's easy to answer. Take your connection speed, subtract capacity used for IPTV. What is left is your effective connect speed.
/Tom |
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dynodb
Premium,VIP
join:2004-04-21
Minneapolis, MN
| reply to tschmidt
Re: Cable vs IPTV = Cable vs DSL
said by tschmidt :The problem facing DSL is that due to distance many subscribers are limited to 1500 or 768 kbps down. That makes any sort of IPTV a very tight squeeze. Much less HD IPTV. /Tom You didn't read the article at all, did you?
It wouldn't be a tight squeeze, it would be an impossible squeeze. If all you can get is 1.5M, you're not going to be eligible for IPTV. |
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dynodb
Premium,VIP
join:2004-04-21
Minneapolis, MN
| reply to ronpin
For the 99.9% of the population that doesn't read BBR or Slashdot, they don't care if it's FTTN, FTTC or FTTH. They care about what can be offered at what price. WAP phone video is a non-starter; few are going to pay very much to watch TV on a 1.5" screen.
Oh, and I love the "predatory pricing" bit. Charge too much, it's Corporate Greed. Charge less and it's "predatory pricing". |
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LilYoda
Feline with squirel personality disorder
Premium
join:2004-09-02
Mountains
| reply to jimbo2150
Re: T-3= bandwidth
Regarding the speed boosting, I can relate a bit
I'm on an ISP here that allows you to set the DSLAM mode
"serenity" means the DSLAM will let you sync below specs, but you're sure to have zero errors, etc.
"fastpath" allows a faster sync, but some errors might appear
"patate" allows full speed, regardless of attenuation, noise, etc... Your modem just syncs as high as it can
My "paper" spec is 720Kbps, I'm 4.4km from the DSLAM, with 60db attenuation.
In "patate" mode, I'm syncing at almost 3Mbps. MPEG2 SD TV is almost watchable.
In "Serenity", I drop to 1.8Mbps. When the ISP switches to MPEG4, 480p streams should fit in my 1.5Mbps
BTW, the set top boxes also have a ReADSL2+ amp that turns on automatically, which is why even in "serenity" mode, I'm still at more than twice the paper spec for my connection.
--
"the two most abundant things in the universe are Hydrogen and stupidity." (Harlan Ellison) |
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en102
Canadian, eh?
join:2001-01-26
Valencia, CA
·RoadRunner Cable
·DSL EXTREME
| reply to jessegr
Re: HD tv + pings
not necessarily - having 6Mbps/1Mbps Internet connectivity should give better than what they have today.
Its logically separated, so you wouldn't even notice the 18 Mbps that the TV is using, just as you don't notice the data being consumed by your TV/digital phone when using a cablemodem. |
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