In reply to a post by RichTea23:

Just keep in mind if you do test your wiring it is live and enough to give you a good shock it can power a phone + ringer etc...
A few cores of Cat5e would make a good replacement.

the voltage only rises when their is an incoming call typical voltage is 50v dc and measured in milli-amp's , so little danger of serious injury from electric shock, unless you have a pacemaker fitted maybe

Changing/relocating a Master socket is no big deal , all you need is the tools and parts, & nouse needed to do the job

Edited by tommy45 (Sun 13-Sep-15 23:44:17)

In reply to a post by CaptainJack:

As a last straw, I am ordered a Billion 8800NL router..

Good choice I have that one on my Zen line and it's rock solid. But you clearly new it was a good choice and that's why you ordered it

As Andrew says they have no control over DLM but I am sure they can change the error correction. Maybe thats only on ADSL though.

Here's my readout from the 8800NL

http://postimg.org/image/psiok0s1h/

Interleaver Depth as 1 means no DLM

Edited by deleted (Mon 14-Sep-15 00:07:59)

In reply to a post by MrSaffron:

Providers have no control over the FTTC DLM

Unless things have changed since I last read the specifications, there are three profiles an ISP can choose between, with differing trade offs between stability and speed. However, this only gives a small and rather indirect amount of control over DLM. In any event, Zen always used to default to the most speed orientated profile.

you forget they can order a change of the profile which is not only control but does a automatic reset?

Change of profile that seems to really just be a change of how the interleaving is used, i.e. profiles are aimed at reducing errors to ensure smooth multicast packet delivery.

In life changes given its openreach are likely to be linked to an engineer visit.

In reply to a post by David_W:

It's worth carrying out a quiet line test using a corded phone to see if there's any detectable mains hum on the line.

Ho hum... the wife made a comment yesterday that the phone line was "noisy", but I thought nothing of it. Today, I had to make a phone call on a land line (people still do that?) and noticed some weird buzzing. I thought it might have been at the other end but then I did a 17070 option 2 quiet line test and the buzzing was still there - this was from the master test socket with the VDSL splitter. I tried a different splitter as I know these can cause similar issues but no difference.

I notified Zen, so let's see what they say.

Uhm... result! Of sorts.

So I phoned Zen to report this noise on the line and after a lot of plugging and unplugging, they agreed to send out an engineer (after being cautiously told about the no-fault-found charge).

An hour later, I get a phone call to say that BT have identified a fault outside my premises and are looking to resolve it by 9PM Thursday. Whether that has anything to do with my issues with BB remains to be seen but at least things are moving.

P.S. It was really quite refreshing to talk to a knowledgeable person at Zen and someone who actually speaks English. Nightmares of dealing with Virgin and BT call centres are still with me.

Edited by deleted (Mon 14-Sep-15 17:45:07)

I mean changing between stable, standard and speed. That definitely does not require an engineer visit. Any CP can order it.

In reply to a post by Chrysalis:

I mean changing between stable, standard and speed. That definitely does not require an engineer visit. Any CP can order it.

Agreed. And if you get an AAISP connection you can do this all yourself anytime you like. It's one of the main bits I miss when I had ADSL with them. The line change options were/are mind blowing even on FTTC

In reply to a post by CaptainJack:

Whether that has anything to do with my issues with BB remains to be seen

It will 100% be to do with it. BB needs a healthy line to work optimally!