I have recently migrated back to 21CN from LLU as needed to economize a little i am now having real issues with my upstream margin when the phone is used. Every time the phone is picked up the noise margin goes mad and quickly drops from where its sat at the time to 0.1 or there about and causes a resync but has not effect whatsoever on downstream, i have been in touch with my ISP and they have requested a SNR Reset (Now at 9DB) from Entanet and a 10 day test period has been restarted.
I have had a qualified sparky/comms engineer check the line inside the house and both the master and slave socket and all cable going to them all check out fine but just as a matter of course i will replace the filtered faceplate BT fitted some time ago with a new Openreach (Current spec model)
Is there anything i have missed or any suggestions anybody can make, as this is driving me nuts my phone is used a fair bit and so is the net so the constant disconnections are really irritating.
Line Currently connected at
ADSL Link Downstream Upstream
Connection Speed 5078 kbps 472 kbps
Line Attenuation 47.0 db 26.1 db
Noise Margin 9.4 db 18.4 db