What speed am I likely to get?

I've just ordered PN Fibre to replace PN ADSL2 as the 'retention' monthly cost is only £12.50 for 38Mbps service. I'm 100m from the Green Box, so it'll be copper from there to very old wiring in my home. Anyone any idea of what actual speeds I might get? And what I should ask Openreach enginer to do, to optimise my final connection? Please?

Is that 100m direct line or actual path length? Can you follow the line from eaves to pole, to pole, to pole, to underground to cabinet and give that distance, allowing and extra 6m for going up the pole, and 4 metres to allow for the transit underground and back up.

Thanks for your reply: it's 100m direct path, underground cable all the way.

In reply to a post by MHC:

Is that 100m direct line or actual path length? Can you follow the line from eaves to pole, to pole, to pole, to underground to cabinet and give that distance, allowing and extra 6m for going up the pole, and 4 metres to allow for the transit underground and back up.

What does the BT wholesale checker estimate for you?

Use either this link: http://www.dslchecker.bt.com/
and put your phone number in.

Or use this line: http://www.dslchecker.bt.com/adsl/ADSLChecker.Addres...
and put your postcode only, and hit submit. Then select your address from the list it offers.

I get 80/20 at 350-400 metres of cable, so if your cable length is similar to the "direct path" (which I take to mean "as the crow flies"), and made of copper, then you'll get good speeds.

You should get maximum speeds at that distance.
Here's TBB's FTTC speed table:
http://www.thinkbroadband.com/guide/fibre-broadband....

I'm impressed with WWWombat's speeds - I will be 600m from cab when FTTC arrives so it's good to see high speeds being reported at longer distances

When i had Sky ADSL2 before i got fibre, I recorded my ADSL status before i got switched over on the green box, I have no idea if this will give you any idea what speed you be expecting

Connection Speed 8160 kbps 1120 kbps

Line Attenuation 30.5 dB 16.8 dB
Noise Margin 7.4 dB 18.18 dB

On fibre i get 57 down and 18 up

In reply to a post by b4dger:

I'm impressed with WWWombat's speeds - I will be 600m from cab when FTTC arrives so it's good to see high speeds being reported at longer distances

B4dger don't get your hopes up too much, it very much depends on the quality of you line. I'm exactly 450 meters by cable route confirmed by BT enginer and I'm currently getting 46Mbps, lowest it's been is around 38, highest for any length of time was 47. At work we get around 39 (500 meters with attainable of 44), yet the newer buildings opposite are estimated at 80 on the same cabinet and only slightly closer.

Thanks but that's not a like for like comparison
It's the distance from your home to your local FTTC cabinet that's the key with FTTC.

They are more like TBB's speed estimates that I linked to - that's what I'm working with. I'm on a longish (48db attenuation) line a few miles from the exchange.
So going from 6Mb to 30+ would be a great improvement for me

In reply to a post by francisuk25:

When i had Sky ADSL2 before i got fibre, I recorded my ADSL status before i got switched over on the green box, I have no idea if this will give you any idea what speed you be expecting

Connection Speed 8160 kbps 1120 kbps

Line Attenuation 30.5 dB 16.8 dB
Noise Margin 7.4 dB 18.18 dB

On fibre i get 57 down and 18 up

ADSL line stats mean almost nothing when estimating the FTTC/VDSL2 capability.

The only useful piece of information that it can give is if the speed achieved is what would normally be achieved on a line with the given attenuation figures, the ratio of down to up attenuation and SNR. If that looks about right it will suggest the line from cabinet to property is OK and should not adversely impact FTTC.

For what it's worth I do seem to be at the bottom end of what can be expected for a 450 meter line, the top end seems to be edging into the 60Mbps area, with a few getting more.

Until your line settles in, there is really no way of knowing what you will get. Even then mine has fluctuated up and down, with fast path, and with varying levels of interleaving, I also don't seem to have been hit with crosstalk, although perhaps in the really early days I was. At the moment I'm enjoying the fastest speeds I've had in a long time. When I fist connected back in July 2012 I very briefly had about 55Mbps, I'm now back to 46Mbps fast path.

Here's a link to my 604 day graphs

Edited by R0NSKI (Sun 20-Apr-14 17:09:19)

I take it you are happy with your internal wiring/setup if locals are doing better?

My olde worlde 20CN connection is fine most of the time. It's only when a few people want to stream TV etc. at the same time it can't cope (kids! )

So whether it's 30, 40 or 50Mb you are getting I hope/assume that's more than enough to suit most people?

In reply to a post by MHC:

"...allowing and extra 6m for going up the pole, and 4 metres to allow..."

It might just be me but I'm pretty sure a few feet here or there is pretty insignificant when you look at the big picture!

The only thing I'm not happy with about the internal wiring is that I had the master socket moved, which means I can't test at the original location, but a big lump stuck in the middle of our hallway did look unsightly, so I prefer it the way it is now. When FTTC was installed the engineer used my pre installed cat5e cable to locate the master in my server room. I've checked every connection, and as far as I can tell there is nothing wrong, I even had an engineer out to check, in the end I accepted the speeds I've got. At the moment they our plenty fast enough for my families needs.

If you look in my signature there is a link to a photo guide I did, the only difference now is that the master socket is in my server room. The guide was done shortly before my FTTC install.

This what myADSL router says:
SNR Margin 10.3 28.3 db
Line Attenuation 22.0 10.3 db
Data Rate 6653 440 kbps
Max Rate 13528 888 kbps
CRC 356 0

I have no idea what these SNR and Attenuation rates mean (I've forgotten....!)

In reply to a post by MHC:

In reply to a post by francisuk25:

When i had Sky ADSL2 before i got fibre, I recorded my ADSL status before i got switched over on the green box, I have no idea if this will give you any idea what speed you be expecting

Connection Speed 8160 kbps 1120 kbps

Line Attenuation 30.5 dB 16.8 dB
Noise Margin 7.4 dB 18.18 dB

On fibre i get 57 down and 18 up

ADSL line stats mean almost nothing when estimating the FTTC/VDSL2 capability.

The only useful piece of information that it can give is if the speed achieved is what would normally be achieved on a line with the given attenuation figures, the ratio of down to up attenuation and SNR. If that looks about right it will suggest the line from cabinet to property is OK and should not adversely impact FTTC.

On a short line it can be a significant proportion. A friend has a 48 metre line length - it goes up and down a pole so 12 metres is 25%!

But wouldn't those on a short line to their cab be on max sync anyway?

In reply to a post by MikeL28:

I've just ordered PN Fibre to replace PN ADSL2 as the 'retention' monthly cost is only £12.50 for 38Mbps service. I'm 100m from the Green Box, so it'll be copper from there to very old wiring in my home. Anyone any idea of what actual speeds I might get? And what I should ask Openreach enginer to do, to optimise my final connection? Please?

My copper length to the cab is 95 meters

6. Data rate: 20000 / 79995
7. Maximum data rate: 33775 / 110211

In reply to a post by b4dger:

You should get maximum speeds at that distance.
Here's TBB's FTTC speed table:
http://www.thinkbroadband.com/guide/fibre-broadband....

's a bit pessimistic that table. I'm 350m from my cabinet but I'm syncing at 70Mb/s. When it first went live (and presumably there was less crosstalk) it sync'd at 79,999 and claimed 90Mb/s was attainable.

In reply to a post by Andrue:

its a bit pessimistic that table. I'm 350m from my cabinet but I'm syncing at 70Mb/s. When it first went live (and presumably there was less crosstalk) it sync'd at 79,999 and claimed 90Mb/s was attainable.

I think its right. 470m (or 450m as OR installer said) from my cabinet.

Max: Upstream rate = 9680 Kbps, Downstream rate = 59220 Kbps
Bearer: 0, Upstream rate = 9587 Kbps, Downstream rate = 52092 Kbps

Edited by jchamier (Mon 21-Apr-14 21:53:39)