Quote:
Originally Posted by Neptune
BT have "master" cabinets in main roads as do VM, but BT do not have cabinets in every street in towns and cities like VM. If BT had such cabinets, why are they running services over ancient copper telephone wires? BT's cabinets link up different exchanges to each other and link to business' too. They're nothing to do with residential services, not in my area anyway.
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BT have very long cable runs thats why not so many cabinets, some lines go direct to premises without touching a cabinet. The network topology is currently different, BTs cabinets is just where pairs meet in its current layout and doesnt house powered equipment. People further away from an exchange are more likely to be connected to a cabinet rather than an exchange directly regardless of they residental or business customer. As to why BT still use ancient coppers, money no other reason and bear in mind BTs network was originally designed for voice only not data. VM's meanwhile wasn't.
---------- Post added at 22:37 ---------- Previous post was at 22:30 ----------
Quote:
Originally Posted by Neptune
....that's how I see it too, but it's really unclear at the moment how it will work. Plus, will these cabs be operated by BT or their offshoot Openreach? Will the cabs be available to other operators to use? The last mile of BT's copper cabling, by law, has to be available to other operators to use through Openreach, but would that include these new cabs? Seems a very messy situation to me.
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Ok here is how I understand it.
The regulation is not finalised yet.
Fibre run will be to street cabinet which will house a dslam and then old copper pair to premises, so line from cabinet to premises remains as it is now, essentially BT are just shortening the copper distance and reducing attenuation.
Sub loop unbundling, where a LLU operator can put their own dslam into cabinet, what I am unsure here is tho does the LLU operator also have to use their own fibre run to exchange.
Ofcom recently regionalised regulation, market 3 regions (typically ones that have cable) BT no longer have to provide wholesale services, however I believe openreach is unaffected by this and its just BT wholesale, eg. zen, aaisp and entanet.
Sky have been playing with FTTC.
The cabling is typically openreach whilst the dslams operated by BT wholesale.
On thinkbroadband some are saying BT will remove all copper feeds to cabinets in FTTC areas meaning LLU operators could have big problems as it would render their dslam rollouts obselete.
---------- Post added at 22:41 ---------- Previous post was at 22:37 ----------
Quote:
Originally Posted by TraxData2
Towns/Cities will see 40-60Mbit though i feel this is somewhat lacking and is going backwards, they need to be offering 100Mbit symetrical speeds really, though as i'm sure your aware, they are only going to offer 2Mbit upload.
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FTTC is a logical next step, all you guys on cable who think adsl is a wonderful world is sadly far from the truth, the reality is only approx 25% of lines can even get 8mbit never mind 20mbit on adsl2+, FTTC will change this picture significantly. A FTTH rollout now even in just cities would probably be at least 5 times the 1.5billion cost and certianly a nationwide FTTH rollout is projected at 10 times the cost, unviable in todays market.