You know when your good ISP

[#1]

Well that didn't last long, after 6 days of solid connection at my normal 17 meg SNR  5.5/6  it dropped this morning and I'm now at 13 meg and SNR 12. After spending god knows how long hanging on the phone the C/S agent tried to fob me off with a load of guff and then telling me the connection speed is right for my line. God know what rubbish they try to fob customers with  who do not have any technical knowledge.

[#2]

After depressing myself by thinking "I wish I could get more than halfway to half that speed" I thought "did you monitor the error rates on your solid connection during those 6 days?".

[#3]

Indeed I did and always do. Sorry you can't get those speeds but I'm not settling for second best when I know I can.

[#4]

I'm getting really cheesed of now as nothing is moving again. Checking my records and my line had been at 17 meg since Dec 2009 which is 4 years not 2 years as I first thought. after it took 14 engineers visits.

[#5]

I'm sorry to hear that glloyd, a ticket was passed back to our faults team yesterday so they'll be responding again ASAP.
Let us know how things go.

[#6]

All that happened overnight following a software change was my SNR has risen even further to SNR 15 and speed dropped to 11Meg.
What is really annoying me is why you refuse to check the obvious. An engineer goes to the exchange disconnects a line with a SNR 6 speed 17 Meg. When he reconnects it the SNR has jumped to 15 and speed dropped to 11 Meg my logical mind would tell me to recheck his connection and check any cards which he may have disturbed. Fiddling with software changes should not be necessary if a line had been stable for 4 years until an engineer disturbed it.

[#7]

Looks to me that software is excactly what should be looked at...  Something about distrubing the line has cause a profile to be set to a higher target SNR.
It may be that BT have detected lots of subsequent disconnects and have set the SNR for stability or this may be a hangover from line work.  I'm guessing that Plusnet are attempting to get the target lowered to then see if the line becomes unstable and BT's system raise the target again?

[#8]

I'm not sure what the "software change" is/was glloyd! If you mean that the Exchange DLM has pushed the Target Noise Margin to 15dB then it seems to be likely that the previous fault has not been fixed.
The broadband dropping when you use the phone is symptomatic of a bad joint somewhere or a fault on exchange equipment.
Can you hear/have you heard any crackling or other noises on the line when using the phone? Have you had any problems with incoming or outgoing calls?