How fast can BT Infinity go with FTTC?

|Kippa| · 25-04-2013, 05:17

I know that FTTP can go insanely fast. I was just wondering how fast can a connection with BT Infinity doing FTTC realistically go? (assuming that the quality from the exchange is optimum and short distance wise). Could you realistically get 200mbit+ off it? Or would you need FTTP for those sorts of speeds?

craigj2k12 · 25-04-2013, 12:12

With vectoring and profile 30a, I imagine 250mbit is possible, but as discussed it would cost far too much in line cards, not to mention the limited capacity of them

truthspeaker · 25-04-2013, 12:42

i think 80Mb might be max. maybe 100Mb if they are lucky.
i think you need to get FTTP for higher speed.
so Virgin Media wins because it can get more customers on 120Mb then BT can.
Plus Virgin media is more cheaper aswell.

craigj2k12 · 25-04-2013, 13:09

Quote:

Originally Posted by umbrokhan786

i think 80Mb might be max. maybe 100Mb if they are lucky.
i think you need to get FTTP for higher speed.
so Virgin Media wins because it can get more customers on 120Mb then BT can.
Plus Virgin media is more cheaper aswell.

wrong, wrong and more wrong, it has already been stated that with vectoring, openreach can roll out 120mbit on the current infrastructure, not to mention openreach cover farrr more homes than virgin

qasdfdsaq · 26-04-2013, 03:58

I'd say 200Mbps-ish would be the practical limit (as in a reasonable proportion of people actually able to get that speed). Maximum theoretical is just over 400Mbps and in practice a few percent of people in cities may just be able to hit 300+

The average line, at present, is capable of 100-120Mbps in the absence of crosstalk.

There are people with short lines that can already do 140Mbps without vectoring on profile 17. Having a fibre cabinet planted at the end of your driveway has its benefits...

---------- Post added at 03:58 ---------- Previous post was at 03:54 ----------

Quote:

Originally Posted by craigj2k12

With vectoring and profile 30a, I imagine 250mbit is possible, but as discussed it would cost far too much in line cards, not to mention the limited capacity of them

The existing line cards already support 30a. Vectoring could arguably be achieved with a firmware update.

|Kippa| · 28-04-2013, 01:09

Do you think in the long run that BT will eventually install fibre to the premises? By eventually, I am talking like 10+ years, not soon.

craigj2k12 · 28-04-2013, 01:26

Everything in the consumer based market is based upon demand and availability, when the demand reaches a rate to make it feasible, then yes, it will be rolled out as the availability is there

Chrysalis · 02-05-2013, 00:43

there is a lot of discussion about this on tbb and ispreview and kitz forums.

BT have announced vectoring trials soon to start but other than that no more info.

It seems the ECI cabs are usign M41 cards which according to ECI do NOT support vectoring, the HG cabinets I think are ugpradeable with min effort. So it first leaves the question are BT going to spend money replacing hardware in all the ECI cabs they just rolled out or will it be a HG cabinet only upgrade? Its ECI's V41 cards that support vectoring.

Openreach documents dont even mention profile 30a its unlikely that is happening soon, plus BT have also said that vectoring will be used as a speed enabler not speed booster meaning they plan to use it to allow more lines to hit 80/20 or at least closer to it but not to raise the headline speed above that. Which makes sense as they will have soon FTTPoD for higher speeds.

I would say 140mbit without vectoring on 17a whilst possible is unlikely once a cabinet is highly populated. It would be akin to getting 24mbit on adsl2+ aka a rarity. It does seem BT want to avoid the adsl2+ saga which meant only a tiny amount of people had a chance of max speed on that product whilst on 80/20 the amount that get it is significantly higher.

BT have confirmed I have lost 40mbit due to crosstalk but refuse to fix it stating policy is policy (line pair swap and dedicated dropwire refused). When they tested a dedicated dropwire to my property earlier this week my attainable jumped from 68/27 to 97/39 but the manager made the engineer switch me back to the shared dropwire. I am sharing my dropwire with another FTTC customer.

Vectoring recovers 95% of crosstalk loss and makes line performance much more predictable as a result. With vectoring people at 500m are likely to get more than what people at 100m get now without it.

|Kippa| · 07-05-2013, 15:51

Quite chuffed got "up to 76mbit" installed and am getting 74mbit down. Not bad considering that I live about 3/4 of a mile from the exchange.

deathtrap3000 · 07-05-2013, 17:37

Vectoring is the next step for BT. Trials have started and they say this could push speeds up to 100mbps. From there I'm assuming they will be looking into the 30a profile. And after that they talk a lot about G.Fast and the movement of broadband equipment even closer to the end users, potentially up the poles and in manholes. Eventually, they will end up replacing the entire network with FTTP.