https://community.bt.com/t5/Archive-Staging/Unexplained-regular-looking-SNRM-adjustment/m-p/2117209#M1209404 <P>For the technical guys here.</P><P>I saw some strange behaviour on my VDSL line this morning.</P><P>The SNRM both up and down jumped up a notch but remained extremely level with no uptick in FEC / CRC errors.</P><P>I'm struggling to understand - maybe interference, or DLM playing around ?</P><P>Looks too uniform to be interference ?</P><P>Cheers</P><P>John<span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Screenshot 2020-12-01 at 11.50.01.png" style="width: 938px;"><img src="https://community.bt.com/t5/image/serverpage/image-id/70010i3937F60643E2A26C/image-size/large?v=v2&amp;px=999" role="button" title="Screenshot 2020-12-01 at 11.50.01.png" alt="Screenshot 2020-12-01 at 11.50.01.png" /></span></P> Tue, 01 Dec 2020 11:50:47 GMT vivoid 2020-12-01T11:50:47Z https://community.bt.com/t5/Archive-Staging/Unexplained-regular-looking-SNRM-adjustment/m-p/2117209#M1209404 <P>For the technical guys here.</P><P>I saw some strange behaviour on my VDSL line this morning.</P><P>The SNRM both up and down jumped up a notch but remained extremely level with no uptick in FEC / CRC errors.</P><P>I'm struggling to understand - maybe interference, or DLM playing around ?</P><P>Looks too uniform to be interference ?</P><P>Cheers</P><P>John<span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Screenshot 2020-12-01 at 11.50.01.png" style="width: 938px;"><img src="https://community.bt.com/t5/image/serverpage/image-id/70010i3937F60643E2A26C/image-size/large?v=v2&amp;px=999" role="button" title="Screenshot 2020-12-01 at 11.50.01.png" alt="Screenshot 2020-12-01 at 11.50.01.png" /></span></P> Tue, 01 Dec 2020 11:50:47 GMT https://community.bt.com/t5/Archive-Staging/Unexplained-regular-looking-SNRM-adjustment/m-p/2117209#M1209404 vivoid 2020-12-01T11:50:47Z