There is unlikely to have been any change in settings applied by the ISP, but a fair chance that BT's DLM is managing the stability of the line in the presence of a fault. What fault investigation have you under taken?
This sounds like an ADSL service...
Broadband is not going to work well if the "phone" line is not working properly.
Please perform a quiet line test - dial 17070 select option 2 using a phone plugged into the test socket behind the face plate of the master socket (ideally this should be a corded phone). The line should be silent. A noisy phone line (or no dial tone) will have a marked adverse impact on the performance of broadband.
If the line is noisy or there is no dial tone, then a PHONE LINE fault needs to be raised with your phone provider. If this is PlusNet, you can report a fault via a mobile telephone using the button below.
How is your line performing?
Please post your router stats (include line speed, attenuation, SNRM, uptime and if available, error counts); for PN routers use the buttons below, for other routers look at the Kitz link.
Also run a BT Wholesale speed test (ideally using an Ethernet wired PC with the WiFi turned off) then run the further diagnostics, download the .PDF report and post the results here. DO NOT REBOOT the router!
Check the Plusnet user portal for the "Current Line Speed" which is relevant to users with static IP addresses.
Superusers are not staff, but they do have a direct line of communication into the business in order to raise issues, concerns and feedback from the community.
