DSL Broadband speeds limited to half, possible noise on line.

[#1]

Probably unrelated but my internet was fine for a long time until some work was done by the building owners installing a new fire alarm.

Started to get a lot of drops of the connection, and then presumably automated speed downgrades to compensate.

I turn my router off for several hours during the day when I'm not using internet. I don't know if that's also going to make it seem like my connection is having problems to whatever system monitors interruptions, but since it was fine for many months I'm guessing not.

The connection drops have mostly stopped, but performance is less than what I need.

I don't have a handset to plug into the line for crackles.

Most recent connection:

DSL Link Up: Down Rate=32400kbps, Up Rate=3812kbps; SNR Margin Down=13.3dB, Up=5.6dB

Product code: Plusnet Hub Two
Data rate: 3.812 Mbps / 32.4 Mbps
Maximum data rate: 4.186 Mbps / 82.358 Mbps
Noise margin: 7.9 / 20.3
Line attenuation: 7.9 / 14.2
Signal attenuation: 7.1 / 11.8

Had issues some time ago, that seemingly cleared up on their own.

I have a feeling the only reason it's stable now is the lower speeds, but unsure.

[#2]

Hi @alexrpm thank you for taking the time to contact us through our Community Forum, I hope you are well.

I tried calling you to discuss the issue reported, noting there was no answer and only the option to leave a voicemail.

At your earliest convenience, please reply advising me a window of time we can call you back to do a line test and further troubleshooting without disrupting anyone that may be using the broadband. 

I look forward to hearing from you soon

[#3]

@Tina11192  The increased downstream SNRM and the 32400Kbps sync speed suggest that the line is banded, so a DLM reset would seem to be the obvious first thing to try. Then monitor the performance to see if the line is stable at the higher speed.

@alexrpm  You should be getting full 80Mbps sync speed with your line, it must be quite near the FTTC cabinet. Turning your router on and off is not considered the best thing to do, it may confuse the DLM system.

[#4]

Well they didn't try that.