G.fast migration

I'm connected to a cabinet that has a G.fast pod on the side of it, however, my property is not one of the ones connected up to it.

Is it feasible to get it connected? Is there someone I can speak to at Openreach about it?

In reply to a post by foxtrot_yankee:

I'm connected to a cabinet that has a G.fast pod on the side of it, however, my property is not one of the ones connected up to it.

Is it feasible to get it connected? Is there someone I can speak to at Openreach about it?

If G.fast is showing for other properties nearer to the cabinet and your property is not then it likely due to distance sadly.

There are loads of streets further away than mine that show as having G.fast available. Mine is one of only four streets not to be connected, it seems.

What are you current sync speeds on VDSL/FTTC and if your modem/router reports this, what are the figures for max attainable? Unless your current sync speed is at least 75Mbps you would gain nothing by connecting to G-Fast.

Are the streets further away connected to the same cabinet as you?

Can you post screenshots of the result of checking your address at https://broadbandchecker.btwholesale.com , and the same check on one of your neighbours who can get G.fast? Crop out the addresses when you post them.

Edited by jpm (Fri 28-Aug-20 18:26:48)

In reply to a post by MCM:

What are you current sync speeds on VDSL/FTTC and if your modem/router reports this, what are the figures for max attainable? Unless your current sync speed is at least 75Mbps you would gain nothing by connecting to G-Fast.

Not great to be honest.

Max: Upstream rate = 9581 Kbps, Downstream rate = 42647 Kbps

But I'm pretty sure I've been living with a line fault for ages. OR engineer is due out on Tuesday.

In reply to a post by witchunt:

Are the streets further away connected to the same cabinet as you?

Yes, as per the link in my post above.

In reply to a post by jpm:

Can you post screenshots of the result of checking your address at https://broadbandchecker.btwholesale.com , and the same check on one of your neighbours who can get G.fast? Crop out the addresses when you post them.

This is mine

This is a neighbouring street

Your VDSL2 speeds (if that checker is accurate) indicate that the distance to the cabinet is too far for G.fast. You may well be physically closer to the cabinet but the cable routing doesn't always take the logical route.

With figures like that you would gain nothing and most likely lose by having a G-Fast connection.
Edit spelling.

Edited by deleted (Fri 28-Aug-20 19:21:09)

Ok, stupid question... if I ordered a 2nd line, where are the spare pairs likely to come from? Same cable route?

Almost certainly the same cable and PCP. You could even find that you already have a second unused pair which just needs to be connected.

Same cable route

No G.fast because your line cable routing is too far away from the G.fast pod. As G.fast work best at 200m or less!

In reply to a post by foxtrot_yankee:

But I'm pretty sure I've been living with a line fault for ages. OR engineer is due out on Tuesday.

I see you're comparing your line with other streets; what about your direct neighbours properties? That'll make it more obvious if you've a line fault or its a longer cable routing that's the issue. While your line is connected to a G.Fast enabled cabinet the the checker won't show availability if the line quality or attenuation is beyond a certain limit

Just checked against the flat next door:

VDSL Range A (Clean) 67.4 50.7 20 17 45.9 Waiting list Waiting list
VDSL Range B (Impacted) 65.8 47.1 20 15 40 Waiting list Waiting list

So they can get around 67Mbps down/20Mbps up compared with my 38Mbps down/10Mbps up

Could it be that your current service is provided as a 40/10 ?

Could you post your full line stats please ? Attenuation, SNR, max attainable etc etc.

And dare I ask, what is your current set up, you are in the NTE with no extension wiring attached aren’t you ?

Edited by Zarjaz (Sat 29-Aug-20 10:05:44)

It's Vodafone Superfast 2, so it's supposed to be the full whack. It was up at around 60/10 a long time ago. Since then it's just whittled away alongside the max attainable.

Now I'm stuck on interleaved and have been for I-don't-know-how-long, possibly months. I purchased a Zyxel XMG3927-B50A, which arrived yesterday, to see if that would help, so that's now connected.

I have had an Openreach NTE5c MK4 for a number of years. There is no extension wiring - I made sure of that.

Full stats here

I connected the new router at 3pm yesterday. At 4:30pm the SNR Margin began to plummet and has hovered around 2.5db since. The new router gives me access to all this info with DSLstats, whereas before it was limited with the Vodafone hub, so I don't know if this has been a regular occurrence.

Edited by deleted (Sat 29-Aug-20 10:47:58)

Did you have the old black Vodafone router with the rounded edges, or the newer rectangular one? I've seen reports that the first routers had terrible modems in and would cause DLM to intervene and reduce rates until they were replaced.

Edited by jpm (Sat 29-Aug-20 11:48:15)

Sorry, I cannot read the figures in your link, enlarging it to a readable size makes it blurry, and unreadable.

In reply to a post by jpm:

Did you have the old black Vodafone router with the rounded edges, or the newer rectangular one? I've seen reports that the first routers had terrible modems in and would cause DLM to intervene and reduce rates until they were replaced.

No, one of the newer rectangular ones.

In reply to a post by Zarjaz:

Sorry, I cannot read the figures in your link, enlarging it to a readable size makes it blurry, and unreadable.

Try here

so no spare ports so migth not even be a gfast pod either might just be a VDSL2 side pod to assist in capacity

Re .. Uptime: 21 hours 30 min 35 sec
do you keep disconnecting it ?

re Interleave depth: 1569 1

Let the exchange equipment do it's work and do not disconnect you modem/router for a 2 weeks or more then check it.

Edited by APTMAN (Sat 29-Aug-20 17:53:17)

No, not repeatedly. That was me connecting a new router yesterday. I know not to keep messing with it and let DLM do its thing. I feel it's stuck, if that's even possible. It never seems to achieve fastpath.

Incidentally, SNR eventually hit zero a few minutes ago and the line retrained itself.

New stats here

The cabinet had g.fast commissioned 2 years ago. Its availability to nearby addresses has already been confirmed by the OP.

In reply to a post by foxtrot_yankee:

.

Incidentally, SNR eventually hit zero a few minutes ago and the line retrained itself.

....Severe, acutely severe, crosstalk

It says that G.INP is not enabled, did you leave it off or are you on an older ECI cabinet? That could be another issue with speed perhaps.

DLM only enables G.INP on quite stable lines. Not on error-prone ones like the OP's .

Line attenuation (dB): 21.0dB (no chance of G.fast for this line atten)

Thanks for the info didn’t know it worked liked that until now.

In reply to a post by RobertoS:

DLM only enables G.INP on quite stable lines. Not on error-prone ones like the OP's .

G.INP is enabled on every Huawei line.

Once in a blue moon is a line missed by DLM.

It will be available, but that is not the same as DLM deciding to use it or not.

Seeing as G.INP effectively turns off in-flight error correction in the modem and replaces it with packet retransmission, plus increasing the connection speed, the throughout would drop through the floor on high-erroring lines. It could also swamp the DSLAM.

The whole purpose of DLM is to attain stability of connection and throughout capability, with a compromise between connection speed and error rates. Given that the higher the sync speed the higher the error rate, always applying G.INP would not be a good idea.

I'm on an ECI cabinet.

Also, I've bitten the bullet and have ordered BT. Trying to get through to someone who knows what they're talking about at Vodafone is impossible. Migration to BT is on September 15, so let's see if there's any improvement. Still expecting an Openreach engineer visit this Tuesday though.

You what?

FEC is always used in addition to G.INP.

DLM used to miss a line once in a blue moon but that was back when DLM could take up to 8 weeks to be applied.

Now the DLM applies G.INP on every single line connected to a Huawei cabinet within a couple days of the line going live
Every single line.

What makes you think otherwise?

Experience.

In reply to a post by foxtrot_yankee:

Still expecting an Openreach engineer visit this Tuesday though.

Looked to get confirmation from Vodafone today. Low and behold, it was all a lie. There was never an Openreach engineer booked. Honestly, Vodafone's broadband customer service is the worst.