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Standard User Be3G
(newbie) Thu 02-Nov-17 17:56:06
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Re: Slightly slow ADSL2+ speeds – possible PSTN issue?


[re: Be3G] [link to this post]
 
You know, I'm getting quite fed up with Andrews & Arnold. I thought they were supposed to be good…?

So, BT engineer came on Tuesday and determined that there was a problem underground which he wasn't trained to fix, so had to leave and send someone else out yesterday to work on this unbalanced cable problem. My line went down for a couple of hours, and when it returned my sync speed had improved by about 0.5Mb/s – so somewhat less than the 5Mb/s or thereabouts that I believe I'm missing, but a start nonetheless.

I was at work yesterday so today I tested my phone line again and… I can still hear the same radio station. So back I go to Andrews & Arnold to explain that there still seems to be a problem, and for the second time this year, they blame my handset!! Despite all of the evidence I supplied them with last week thanks to all the help here.

Additionally, they didn't e-mail me at all between last Friday and today – nothing to keep my updated after the fix was postponed for a day, nothing to respond to my question re. why this unbalanced line problem wasn't picked up when I raised a fault earlier this year.

Hmph.

This isn't the first time their e-mail support has been less than exemplary either (although sometimes it's good).
Standard User partial
(experienced) Thu 02-Nov-17 21:35:41
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Re: Slightly slow ADSL2+ speeds – possible PSTN issue?


[re: Be3G] [link to this post]
 
Getting rid of the unbalanced cable fault will help with the noise cancellation properties of the pair. The magical properties of twisted pair is being undone by the imbalance.
Standard User Zarjaz
(eat-sleep-adslguide) Fri 03-Nov-17 06:09:05
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Re: Slightly slow ADSL2+ speeds – possible PSTN issue?


[re: partial] [link to this post]
 
Agreed, raise the pairs A/C balance.

The pass mark for a PQ test is 55db, but I think 60 or above is better for this kind of thing, problem is the value of the earth the tester uses is an unknown.


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Standard User Be3G
(newbie) Mon 06-Nov-17 19:36:42
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Re: Slightly slow ADSL2+ speeds – possible PSTN issue?


[re: partial] [link to this post]
 
Ah yes, thanks, that makes perfect sense.

Latest update for those who're interested: Andrews & Arnold are saying there is no service-affecting fault so are currently unwilling to do anything. frown
ISP Representative andrewhearn
(isp) Tue 07-Nov-17 11:53:22
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Re: Slightly slow ADSL2+ speeds – possible PSTN issue?


[re: Be3G] [link to this post]
 
HI Be3G, I believe this fault is with our escalations team, I'll see what's going on with it and will get an update to you. I'd offer to send a second corded phone yo test with, but postage will cost as much as buying one smile

Andrew Hearn
AAISP
aa.net.uk support@aa.net.uk 033 33 400 999
The above post has been made by an ISP REPRESENTATIVE (although not necessarily the ISP being discussed in the post).
Standard User Be3G
(newbie) Tue 07-Nov-17 23:11:19
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Re: Slightly slow ADSL2+ speeds – possible PSTN issue?


[re: andrewhearn] [link to this post]
 
Arrgghh my hideout in the General Broadband Chatter forum here has been rumbled, you've found me!

Just kidding. Thanks Andrew.
Standard User RobertoS
(elder) Tue 07-Nov-17 23:15:05
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Re: Slightly slow ADSL2+ speeds – possible PSTN issue?


[re: andrewhearn] [link to this post]
 
In reply to a post by andrewhearn:
HI Be3G, I believe this fault is with our escalations team, I'll see what's going on with it and will get an update to you. I'd offer to send a second corded phone yo test with, but postage will cost as much as buying one smile
So you will credit his account with the purchase price and a goodwill gesture for the inconvenience? tongue smile.

(Sorry Andrew, but it was an irresistible open goal smile).

My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. 200GB. Sync 73724/12601Kbps @ 600m. BQMs - IPv4 & IPv6
Standard User Be3G
(newbie) Thu 16-Nov-17 16:39:10
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Re: Slightly slow ADSL2+ speeds – possible PSTN issue?


[re: Be3G] [link to this post]
 
Because I know you're aaaalll on tenterhooks…

My line has been fixed! Sort of.

Slightly begrudgingly it seemed, A&A pushed through a new PSTN fault to Openreach last week after finding my thread here. I wasn't expecting much to come from this, as it seemed safe to assume I'd have the same experience as mentioned in my OP after the first visit a few months ago. I was even starting to doubt myself for getting on A&A's nerves but a couple of days ago my broadband inexplicably dropped for six minutes, which proved that after the recent work to fix the unbalanced cable the line still wasn't operating perfectly, with or without the geriatric corded phone.

So the Openreach guy arrived today and this time, unlike the previous visit, did believe me when I said there was a problem. He was probably about twice the age of the previous engineer, and sounded like he had a fair bit of experience under his belt. He immediately suggested one of the filters that've been talked about in this thread before; I was a bit apprehensive of negative impacts on my ADSL signal, but I figured it was best to let Openreach do what they want to do. So he put it in in place of my old GPO box and voila: no more audio on the line!

After reconnecting the router I find, much to my interest, that my speed is… the same. So it's definitely not had an adverse effect (e.g. by filtering out useful ADSL signals in the same range as unuseful radio ones), but there's also no indication that it's fixed the ADSL side of the equation. Sure, I can live with my speeds not improving, but the fact they haven't makes me suspicious that the ADSL signal stiff suffers from interference and may therefore still be liable to drop.

So I guess I'm just going to have to keep monitoring the line, wait for any disconnections, and then report an ADSL fault in future if I do get any. I'm very pleased though that the PSTN side has been fixed now, so thanks everyone for your help and for giving me the confidence to keep pushing my case with A&A.
Standard User ian72
(eat-sleep-adslguide) Thu 16-Nov-17 16:42:46
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Re: Slightly slow ADSL2+ speeds – possible PSTN issue?


[re: Be3G] [link to this post]
 
Whilst your speed hasn't improved are you able to see if the SNR has increased? It could be the SNR has gone up but that DLM is now holding your line back rather than a fault.
Standard User Be3G
(newbie) Thu 16-Nov-17 16:46:54
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Re: Slightly slow ADSL2+ speeds – possible PSTN issue?


[re: ian72] [link to this post]
 
Sadly the SNR and sync speed are almost exactly the same as they were before the engineer's visit today, so I don't think there's much to look forward to in that respect!
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