How fast could BT Infinity go in the long term?

[|Kippa|]

Theoretically how fast could BT Infinity technically go? (That is for residential users with fiber to the cabinet not premises).

[Ignitionnet]

There are people who already have maximum attainable rates of over 100Mb.

With a technology called vectoring this will be attainable by considerably more people.

Using the current settings, 17a, with vectoring, theoretically Infinity could do 120Mb Symmetrically, or have 246Mb split between upstream and downstream.

If BT were to increase the bandwidth to profile 30a, which requires regulatory approval, the bandwidth to split between upstream and downstream becomes 417Mb.

Please note that this is with a single copper pair. Nearly all homes have more than one pair, and with 2 physical pairs and a technology called 'phantom' DSL over 750Mb has been achieved at 500m from the cabinet.

So, for the majority of people, if you say 500Mb - 750Mb you're about there.

[|Kippa|]

Thanks for the quick reply. I used to have VM 50mbit and got a nice 53mbit off it at my old house. I have just moved house and am with BT now and get 15mbit off the ADSL which isn't bad compared to what some people get. I really miss the fast cable connection. BT infinity is supposed to come to my area in about 4 months, can't wait for it.

[Ignitionnet]

If you are quite a heavy user and like your P2P / newsgroups you may want to consider Sky Fibre Pro. 80Mb/20Mb product with no shaping or caps.

[|Kippa|]

I don't p2p or newsgroup at all. I do max out my connection quite a bit sometimes, for example I have just reinstalled my os and downloading all my games off steam which is circa 300gb. I also upload quite a few photographs being 8mb to 12mb per jpeg, whilst not to taxing doing the odd one or two but when you do a load it takes time.

[qasdfdsaq]

Originally Posted by Ignitionnet

Using the current settings, 17a, with vectoring, theoretically Infinity could do 120Mb Symmetrically, or have 246Mb split between upstream and downstream.

The current split is 2741 downstream and 1245 upstream tones (not sure why/how there's an overlap) which gives about 164mbps down and 75mbps up, theoretically.

[truthspeaker]

maybe 120Mb download// upload 40Mb

[craigj2k12]

or maybe 164 down and 75 up, as mentioned?

[muppetman11]

Originally Posted by Ignitionnet

There are people who already have maximum attainable rates of over 100Mb.

With a technology called vectoring this will be attainable by considerably more people.

Using the current settings, 17a, with vectoring, theoretically Infinity could do 120Mb Symmetrically, or have 246Mb split between upstream and downstream.

If BT were to increase the bandwidth to profile 30a, which requires regulatory approval, the bandwidth to split between upstream and downstream becomes 417Mb.

Please note that this is with a single copper pair. Nearly all homes have more than one pair, and with 2 physical pairs and a technology called 'phantom' DSL over 750Mb has been achieved at 500m from the cabinet.

So, for the majority of people, if you say 500Mb - 750Mb you're about there.

Sorry to resurrect a thread however I'm curious about vectoring.

Excuse my ignorance but I only have basic knowledge of all things broadband.

As I understand it vectoring helps to reduce crosstalk thus potentially giving improvements on speed and has the potential to see more users reaching the now 80mb is this correct ?

Will vectoring also help to increase headline speeds ? When are we likely to see it introduced on the Openreach network ?

Numerous places seem to suggest that Vectoring won't be available through ECI cabs ? Is this correct or have I read it wrong ? All the cabs in this area even the ones being installed are this particular type which if the above is true would seem a strange decision by Openreach.

What speeds could I expect from vectoring , here's my stats from HH 5 on Infinity 2

6. Data rate: 20000 / 79995
7. Maximum data rate: 37276 / 129695
8. Noise margin: 16.7 / 21.7
9. Line attenuation: 0.0 / 8.1
10. Signal attenuation: 0.0 / 8.1

On the rare occasion my router has rebooted the downstream line and signal attenuation figures seem to have changed is that normal , they're currently 8.1 and I've seen 8.6 and 9.6 I thought this figure shouldn't change.

[Ignitionnet]

Truthfully no-one knows. Openreach honestly couldn't care less about headline speeds but from some BDUK bids it seems likely they'll go to 100Mb.

As far as the ECI cabinets go again unsure. The bunch of bankers who control Openreach's purse strings are unlikely to open their vice-like behinds and spend money that could be going on share buy-backs and dividends unless they absolutely have to and will spend as little as they can.

EDIT: Have asked a couple of influential people.

[muppetman11]

Cheers Ignition I'd be interested to hear what you find out.

BT Infinity at any speed would be nice around here. Our ADSL just about tips 2.25Mb and the last Openreach tech I had out here (due to a line fault) was astonished it even got that fast. ADSL stops working altogether no more than half a mile further up the road from here, everyone north of that point had government grants to buy satellite kit but AFAIK are still saddled with eye-watering monthly connection charges and very strict download allowances.

[Ignitionnet]

Unfortunately BT are deploying the tech where they think they'll make money or where subsidy has been provided. Some remote areas are exactly that, so remote that they aren't economical even with some level of taxpayer subsidy and that subsidy is better spent covering more people for now.

As someone who received considerably less than 2Mb in a suburban area and had to campaign to get FTTC I can to an extent empathise, though not entirely as our having to campaign in the first place was a BT mess up rather than being extremely remote and expensive to service with no chance of BT making their money back and thousands of pounds per premises being required for NGA coverage.

Vectoring... the only field trials appear to be on Huawei DSLAMs, ECI require hardware upgrades to support it. That said and bizarre as it may seem that wouldn't actually be that big of a deal, the DSLAM in the cabinet is a relatively small part of the costs.

[muppetman11]

Thanks for the information.