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Thanks pals.

We're (hopefully) done, I think.

Attached is what (just vefore) 6 o'clock (pm) looked like on my FEC page.
Maybe a graph of (certain kinds of) error correction in action.

ahh yeah I forgot, FEC on g.inp does cause jitter, so that probably is the explanation for the latency thing I picked up on, and probably explains why jelv said its normal as well.

We've been here before, giving loads of suggestions such as external aerials, if fact I suggested exactly what you are now proposing and you totally dismissed the idea rather abruptly.

My advice is keep it simple to start with and build on it from there.

Back in the Black Friday sales you could get that sim for £20 a month, Robertos on think broadband did away his VDSL and uses it instead I believe.

Here's what I get sat in bed https://www.speedtest.net/my-result/a/4574762663

What Burakkucat said.

@Jon21 - that’s absolutely excellent. It’s what I’m doing now.

I got my cable from an eBay seller who was very good. You might just possibly see some slight improvement but don’t be surprised if there’s a null result. These things are extremely difficult to measure. Fake effects just caused by the fact that you have resynched can override the result of measurements, when sync rates change anyway even though you have not changed any kit.

Shortening cables, using good quality modem-to-wallsocket cable, which should be CW1308 twisted pair, or [https://www.tandyonline.com/high-speed-rj11-dsl-cable-0-5m.html]Tandy/Adsl nation cable[/url], preferably extremely short as you suggested, these are very good things. I did get a substantial improvement by going from crappy modem-to-wallsocket cable to very high quality short twisted pair.

See https://forum.kitz.co.uk/index.php?topic=15910.0
https://forum.kitz.co.uk/index.php/topic,20119.0.html

I don’t think it would be a very good idea to use an IPv4 router like the Solwise 4G-to-2.4GHz 802.11n router that I have and connect that to the Firebrick. I think there would be many difficulties if not using PPPoE and a modem into the Firebrick.

—

Question: if I used two 4G modems simultaneously and IP-bonded them using the usual AA+Firebrick technology, how would that do in terms of performance on the 4G network? I realise that the two would be contending with each other. I don’t know whether there are collisions or not. Would it be a way of greatly increasing throughput? At double the cost of course.

I get 8Mbps downstream and 2.8 Mbps upstream (presumably TCP payload figures?) reported by speedtester2.aa.net.uk with my iPad on 3G when in bed. This is right st the back of the east-facing bedroom. The base station itself is in clear view to the east when at the window. However lying here I am at the wrong angle and too low down. I would get 4G mode if I moved to a better position in the room. A modem used in the office with the Firebrick would get a superb view of the base station and would be in 4G mode. Not sure what speeds can be expected in 4G.

I have seen an all-you-can-eat 4G deal from Three. It is, I think, £27 per month for a data SIM which is incredible. I can’t be reading that right. That looks like the way to go.

Any thoughts?

I could use that together with DSL as a fallback.

There are two fanks, it is confusing. Apart from the one right by my house (which is next to the cattle grid below me at the northern boundary of Heasta), there’s another one, the ‘Harrapul Fank’, a few miles north of me. That fank is near the northern end of the road a few hundred metres from the main road at a suburb called Harrapul. There was damage to the copper lines somewhere around there a few years ago, mentioned in a thread. It perhaps a bit further south than the Harrapul fank and there was more damage further south still, south of where the stream Allt a’ Choire goes under the road at a tiny bridge, where the road begins to climb. The aforementioned highland cattle hang out there and never venture up over the hill as far south as Heasta. Their grub is there, maybe that’s why. The lines at the Harrapul fank must be buried now because lorries and other vehicles pull off the road there and park up and would be running right over the cable all the time but the damage is very infrequent. A couple of years ago a huge lorry full of tree trunks was there and there was a problem with the copper so no prizes for guessing.

That was the ridiculous situation twenty years ago at the Heasta fank, with vehicles running right over the cable bundle and parking on top of it. Obviously caused repeated catastrophic damage until BT sobered up and buried the cable. Which makes you wonder why in the name of all that’s holy they had not just done the right thing in the first place.

Yes, that would be correct. 

However, please remember that there are other suppliers . . . so it is not necessary to just rely upon RID. 

If I wanted to change from a filtered faceplate on a NTE5c, would I need:

1x https://www.run-it-direct.co.uk/bt-line-boxes-and-sockets/nte5cmastersocket/ for the phone only faceplate

1x https://www.run-it-direct.co.uk/adsl-vdsl-patch-leads/adslvdslbtcat5patchlead05m/

There isn’t a phone plugged in to the Mk4 faceplate, so if it may potentially improve sync/error rate, might give it a go.

Plusnet seem to change my gateway several times a week. I have some suspicions that their provision for customers in Scotlandshire is not as good as AAISP's might be.

I note you said you are on a static IP, therefore there are supposedly several gateways in London you can connect to.  Dynamic IP's have a more static routing as the IP's are dished out by a local pool near to the bRAS before the MSILs

Interestingly, I've just done a tracert and the details for these have changed fairly recently as there used to be a description of the gateway name when you did a tracert. (eg pcn-bng04.plus.net)
Now it just gives me the IP address which if I look up just simply says it belongs to BT, but further digging shows that it was formerly the IP for pcn-ir01.plusnet. (Colindale PoP).

https://whatismyipaddress.com/ip/84.93.253.64

Thanks pals.

We're (hopefully) done, I think.

Attached is what (just vefore) 6 o'clock (pm) looked like on my FEC page.
Maybe a graph of (certain kinds of) error correction in action.

As j0hn said, they are treated separately.

If you exceed the MTBE threshold for downstream then that will trigger ILQ status Red.  If you exceed the MTBE upstream, then that will trigger ILQ status Scarlet.   DLM will take appropriate steps only on the respective down/up stream. 

https://kitz.co.uk/adsl/DLM.htm#DLM_profile_changes