|reply to brad |
Re: Sounds like the same old crap.
said by brad:I agree vectoring is interesting what you neglected to mention is that all vectored DLSAMs need to be under the same management so it does not work well when ILECs and CLECS serve out of the same CO. In my case my phone and ADSL is supplied by a CLEC. There are two CLECs that collocate out of our Central Office. That being said even when DSLAM are managed by multiple entities vectoring should still help but it is not the magic bullet to higher speed.
One such major improvement that is being rolled out by carriers around the world over the next 2 years is Vectoring which will allow existing connections able to attain 25Mbps service to now be able to attain 75/100 Mbps service.
Can you provide a link to a 3X vectoring improvement you cite, that is much greater then I though possible?
said by brad:Bonding is actually pretty interesting for carriers that are not loop poor. There was a big build out during the heyday of dialup so many carriers have excess loop capacity. In our case at one time we had three phone lines and a SDSL connection. Today we are down to a single voice/ADSL connection. However loop bonding is relatively expensive (multiple loops, DSLAM, modems) but is better than nothing.
Using VDSL2 Bonding which utilizes 2 pair that can be raised to 150/200Mbps. Alcatel-Lucent is working on Phantom Mode which when used in conjunction with Bonding can further raise that upwards of 300Mbps.
As long as we are navel gazing getting rid of ATM would yield a quick 11 % increase in effective ADSL speed.
said by brad:The problem is 1) VRADs are expensive, 2) you need a lot of them, 3) they need backup power, 4)suburban NIMBY complaints, 5) you are still limited by copper.
You don't feed VDSL2 directly from the CO. That's why you build VRADs close to the customer.
said by brad:That is the real question how long will we live with a band-aid approach to broadband and when will we migrate to a purpose built high-speed network?
Trust me I'd love to see fibre everywhere but it is not realistic. Even Verizon with their FiOS did a pretty poor job at it.