Comments on: VDSL2, 100 MBPS over Copper Next http://gigaom.com/2005/05/19/vdsl2-100-mbps-over-copper-next/ Trusted Insights and Conversations on the Next Wave of Technology Thu, 26 Nov 2009 06:47:41 +0000 http://wordpress.com/ hourly 1 By: doodman http://gigaom.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-971523 doodman Thu, 03 Sep 2009 22:03:02 +0000 http://gigaom.wordpress.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-971523 <p>Pair bonding + vdsl2 will allow for loop lengths of 1600 feet + with sufficient bandwidth to support a minimum of 1 hd 3 sd streams. This is and will be the final solution.</p> Pair bonding + vdsl2 will allow for loop lengths of 1600 feet + with sufficient bandwidth to support a minimum of 1 hd 3 sd streams. This is and will be the final solution.

]]> By: Behemoth Droppings: That’s one big pile of….. » Blog Archive » DSL over Cable http://gigaom.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-881830 Behemoth Droppings: That’s one big pile of….. » Blog Archive » DSL over Cable Wed, 04 Jun 2008 00:00:44 +0000 http://gigaom.wordpress.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-881830 <p>[...] from Cincinnati Bell and am completely satisfied with there service. Plus, with the possibility of ADSL2, VDSL, or even VDLS2, I see no reason to move from the phone company. So, if you do a lot of downloading and surfing [...]</p> [...] from Cincinnati Bell and am completely satisfied with there service. Plus, with the possibility of ADSL2, VDSL, or even VDLS2, I see no reason to move from the phone company. So, if you do a lot of downloading and surfing [...]

]]> By: AT&T CEO: Network Upgrades In Progress, Pair-Bonding for Faster DSL & the 3G iPhone « GigaOM http://gigaom.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-624745 AT&T CEO: Network Upgrades In Progress, Pair-Bonding for Faster DSL & the 3G iPhone « GigaOM Tue, 23 Oct 2007 17:15:49 +0000 http://gigaom.wordpress.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-624745 <p>[...] “Pair-bonding is coming next year,” he said, which will allow AT&T to send out more than one HD stream at a time. (Some have forecasted that within five years, we will have 3 HD and 2 SD streams coming into our homes.) Pair-bonding, which will use gear from Alcatel-Lucent (ALA), will allow AT&T to connect homes to the fiber nodes at over 40 megabits per second. This is not the first time AT&T has brought up pair-bonding as a solution. (Related: Our post on pair-bonding.) [...]</p> [...] “Pair-bonding is coming next year,” he said, which will allow AT&T to send out more than one HD stream at a time. (Some have forecasted that within five years, we will have 3 HD and 2 SD streams coming into our homes.) Pair-bonding, which will use gear from Alcatel-Lucent (ALA), will allow AT&T to connect homes to the fiber nodes at over 40 megabits per second. This is not the first time AT&T has brought up pair-bonding as a solution. (Related: Our post on pair-bonding.) [...]

]]> By: k fisher http://gigaom.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-616477 k fisher Thu, 18 Oct 2007 04:35:36 +0000 http://gigaom.wordpress.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-616477 <p>While this article is interesting, clicking on 'Electiphy' which is supposed to be a vdsl company gives pictures of graphic pornography!! Oh is that what the VD stands for??? I think that this should be removed and I do not appreciate having porno on my computer through deception. You should check your articles for this kind of spam!!! Your writer no longer has any credibility.</p> While this article is interesting, clicking on ‘Electiphy’ which is supposed to be a vdsl company gives pictures of graphic pornography!! Oh is that what the VD stands for??? I think that this should be removed and I do not appreciate having porno on my computer through deception. You should check your articles for this kind of spam!!! Your writer no longer has any credibility.

]]> By: Om Malik’s Broadband Blog » Just a little bit of DSL http://gigaom.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11891 Om Malik’s Broadband Blog » Just a little bit of DSL Fri, 23 Sep 2005 15:53:11 +0000 http://gigaom.wordpress.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11891 <p>[...] Covad just started hawking a 6 megabits/768 kbps TeleSoho service for about $108 a month… but don’t worry, you could soon get a better deal from Earthlink which will soon be pushing a 8 megabits per second connection with lots of voice for about $70 a minute month. That will help DSL retain its leadership…. which is good news for Ikanos, which just went public. The VDSL chip maker sold 6.4 million shares at $12 a share, for a total of $69 million. The stock closed at $1 a share. By the way this is one of those rare broadband public offerings! In Wired Posted Friday, September 23, 2005 at 12:28 AM PT [...]</p> [...] Covad just started hawking a 6 megabits/768 kbps TeleSoho service for about $108 a month… but don’t worry, you could soon get a better deal from Earthlink which will soon be pushing a 8 megabits per second connection with lots of voice for about $70 a minute month. That will help DSL retain its leadership…. which is good news for Ikanos, which just went public. The VDSL chip maker sold 6.4 million shares at $12 a share, for a total of $69 million. The stock closed at $1 a share. By the way this is one of those rare broadband public offerings! In Wired Posted Friday, September 23, 2005 at 12:28 AM PT [...]

]]> By: Jesse Kopelman http://gigaom.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11890 Jesse Kopelman Fri, 20 May 2005 22:48:27 +0000 http://gigaom.wordpress.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11890 <p>The idea behind whether you go with FTTP or xDSL is about whether you want to pay now or later. Eventually demmand will be so great that you will be forced to use fiber everywhere but dense urban areas (where distance from the CO will always be small). I think Verizon decided that they had the money to do it now and would thus be ready to respond to future needs on short notice. Carriers going the DSL route run the risk of finding they can't afford to go all fiber, when the time comes.</p> The idea behind whether you go with FTTP or xDSL is about whether you want to pay now or later. Eventually demmand will be so great that you will be forced to use fiber everywhere but dense urban areas (where distance from the CO will always be small). I think Verizon decided that they had the money to do it now and would thus be ready to respond to future needs on short notice. Carriers going the DSL route run the risk of finding they can’t afford to go all fiber, when the time comes.

]]> By: Ronald Gruia http://gigaom.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11889 Ronald Gruia Fri, 20 May 2005 06:39:33 +0000 http://gigaom.wordpress.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11889 <p>Om, as per Zed's post, there is an inverse relationship between the loop length and the bandwidth. Moreover, I say that for future proofing purposes, 19 Mbps is the minimum. Take the fact that more than 50% of SBC's loop lengths are over 10 kilofeet, and that still means that FTTN with ADSL2+/VDSL, etc. (i.e. a last-mile copper solution) is not the final solution. It's the "go after the low hanging fruit" solution.</p> Om, as per Zed’s post, there is an inverse relationship between the loop length and the bandwidth. Moreover, I say that for future proofing purposes, 19 Mbps is the minimum. Take the fact that more than 50% of SBC’s loop lengths are over 10 kilofeet, and that still means that FTTN with ADSL2+/VDSL, etc. (i.e. a last-mile copper solution) is not the final solution. It’s the “go after the low hanging fruit” solution.

]]> By: Wes Felter http://gigaom.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11888 Wes Felter Thu, 19 May 2005 23:10:41 +0000 http://gigaom.wordpress.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11888 <p>Given that it's possible to bond multiple ADSL connections, it's not fair to compare single-pair ADSL against N-pair VDSL.</p> <p>If you want symmetric connectivity, look to Ethernet in the First Mile Copper instead of DSL.</p> Given that it’s possible to bond multiple ADSL connections, it’s not fair to compare single-pair ADSL against N-pair VDSL.

If you want symmetric connectivity, look to Ethernet in the First Mile Copper instead of DSL.

]]> By: Om Malik http://gigaom.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11887 Om Malik Thu, 19 May 2005 21:51:28 +0000 http://gigaom.wordpress.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11887 <p>well this is information that is coming from the documents etc filed for the standards, of course the real life performance is still something else. 6000 feet is still not bad - nearly a mile from the central office, it can be quite helpful in the dense locations like houston or chicago</p> well this is information that is coming from the documents etc filed for the standards, of course the real life performance is still something else. 6000 feet is still not bad – nearly a mile from the central office, it can be quite helpful in the dense locations like houston or chicago

]]> By: Zed http://gigaom.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11886 Zed Thu, 19 May 2005 19:09:47 +0000 http://gigaom.wordpress.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11886 <p>Please, please don't fall into the up to trap! As all flavors of xDSL, VDSL2 speeds fall off with distance. Thus we are unlikely to seee 50+ Mbps speeds above 2000 feet, which is way to little to feed the 95% of home within 6000 feet of the node. Even with VDLS2 telcos are going to need deep fiber to compete with cable or even think of offering HDTV. Futhermore why bother with inaccurate statements about xDSL performance when a single picture will tell more than a thousand words.</p> <p>http://www.convergedigest.com/blueprints/ttp03/images/2005/ti-fig4.gif</p> Please, please don’t fall into the up to trap! As all flavors of xDSL, VDSL2 speeds fall off with distance. Thus we are unlikely to seee 50+ Mbps speeds above 2000 feet, which is way to little to feed the 95% of home within 6000 feet of the node. Even with VDLS2 telcos are going to need deep fiber to compete with cable or even think of offering HDTV. Futhermore why bother with inaccurate statements about xDSL performance when a single picture will tell more than a thousand words.

http://www.convergedigest.com/blueprints/ttp03/images/2005/ti-fig4.gif

]]> By: Frank Coluccio http://gigaom.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11885 Frank Coluccio Thu, 19 May 2005 15:29:29 +0000 http://gigaom.wordpress.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11885 <p>OM, agreed. With all of the lines that have been disconnected due to the shift to cellular and email, I'm sure there'll be plenty of copper available out there for everyone!</p> <p>Keeping on the same subject, what do you think about the RBOCs, in particular, Verizon, disconnecting and then tearing out entirely the copper lines that once went to homes where they have insalled its Fios service?</p> OM, agreed. With all of the lines that have been disconnected due to the shift to cellular and email, I’m sure there’ll be plenty of copper available out there for everyone!

Keeping on the same subject, what do you think about the RBOCs, in particular, Verizon, disconnecting and then tearing out entirely the copper lines that once went to homes where they have insalled its Fios service?

]]> By: Om Malik http://gigaom.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11884 Om Malik Thu, 19 May 2005 14:30:42 +0000 http://gigaom.wordpress.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11884 <p>Frank</p> <p>good point. i think it is more than one twisted pair for now. I am sorry I did not include this. Apparently this is not going to be a big issue because most US homes have more than two phone lines coming in by default. Call it the legacy of the Bell system, redundant fax lines and the now unused DSL lines.</p> Frank

good point. i think it is more than one twisted pair for now. I am sorry I did not include this. Apparently this is not going to be a big issue because most US homes have more than two phone lines coming in by default. Call it the legacy of the Bell system, redundant fax lines and the now unused DSL lines.

]]> By: Frank Coluccio http://gigaom.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11883 Frank Coluccio Thu, 19 May 2005 12:21:20 +0000 http://gigaom.wordpress.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11883 <p>OM,</p> <p>An otherwise excellent post could have used more clarification on the number of physical copper pairs required to attain the speeds over VDSL2 for the distance indicated. Granted, to do so might become too cumbersome to depict in a blog message, given the gradations that exist with respect to the number of pairs needed at various speeds versus a distance scale. But still, IMO, some mention of this characteristic should have been included.</p> <p>While some of the results that you've noted are truly remarkable, I note a gross lopsidedness between up and down speeds for most versions of xdsl shown. Such asymmetric bahavior is well suited to the service providers who are also providing content in their vertical services bundles, but at the same time this serves to ensure that consumers will forever remain, well... consumers of data, rather than allowing them to become producers of it, as well, fwiw.</p> <p>Frank Coluccio</p> OM,

An otherwise excellent post could have used more clarification on the number of physical copper pairs required to attain the speeds over VDSL2 for the distance indicated. Granted, to do so might become too cumbersome to depict in a blog message, given the gradations that exist with respect to the number of pairs needed at various speeds versus a distance scale. But still, IMO, some mention of this characteristic should have been included.

While some of the results that you’ve noted are truly remarkable, I note a gross lopsidedness between up and down speeds for most versions of xdsl shown. Such asymmetric bahavior is well suited to the service providers who are also providing content in their vertical services bundles, but at the same time this serves to ensure that consumers will forever remain, well… consumers of data, rather than allowing them to become producers of it, as well, fwiw.

Frank Coluccio

]]> By: Broadband Blog » Blog Archive » News from Abroad http://gigaom.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11882 Broadband Blog » Blog Archive » News from Abroad Thu, 19 May 2005 12:16:11 +0000 http://gigaom.wordpress.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11882 <p>[...] oadband. It is called as VDSL2 and optimises the current ADSL2 platform for data delivery. Is it the new wave of future? I am wondering whether we would see MbPs [...]</p> [...] oadband. It is called as VDSL2 and optimises the current ADSL2 platform for data delivery. Is it the new wave of future? I am wondering whether we would see MbPs [...]

]]> By: Tendo http://gigaom.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11881 Tendo Thu, 19 May 2005 11:51:58 +0000 http://gigaom.wordpress.com/2005/05/19/vdsl2-100-mbps-over-copper-next/#comment-11881 <p>Why is Verizon so bent on FTTH then? I'm not sure I understand. This must be a significantly cheaper alternative.</p> Why is Verizon so bent on FTTH then? I’m not sure I understand. This must be a significantly cheaper alternative.

]]>