As I think I've mentioned elsewhere, I've recently converted my second line from ADSL to VDSL (with AAISP using BT wholesale).
My first line is also VDSL (also with AAISP, but using TT wholesale), which has been reliably syncing at about 80.5/27 max attainable (SNRM 6.3/15.4) for the last couple of years. I think I'm around 150-200m from the cabinet.
I've been monitoring the new line, and am a bit confused about what to expect next.
When it was first installed (26th June), it was syncing at about 77/25 (max attainable), with the line rate at 67/20. About 48 hours later, the line resynced and the line rate jumped up to about 77/20. SNRM was about 6.3 DS and 15.3 US. CRC errors were 0 for the DS, but present on the US at the rate of about 5 or 6 an hour.
It then stayed pretty much the same until 21st July, when it resynced at about 79/25 (max attainable). DS SNRM dropped to 5.3.
Then on the 23rd July, it jumped to 82/25 with DS SNRM about 4.6 (US SNRM still 15.3).
Most recently (this morning at about 6.20am), it resynced and changed to 79/27, with DS SNRM back up to 5.2 and US SNRM down to 10.6
Since this morning's change, the previously small number of US CRC errors has dropped to zero (and DS CRC has stayed at zero), so it looks like the US has been improved.
My question is whether the DLM is likely to try dropping the DS SNRM again? It seemed stable at that setting.
Thanks
