The VDSL retrains were the engineer messing about with the line hope he reset DLM when he was finished. Got my static IP today so have updated my BQM.
Interesting to hear that the engineer tested from the BT66. I guess he disconnected the feed from the BT66 to the NTE5C and that resulted in at least one of the 6 resyncs reported by the router from the 19th November to the 23rd November at 18:33:18.
I had a SFI visit several years ago, due to an intermittent broadband fault, and he only tested from the NTE5 test socket (plus cabinet and exchange.) I wish he had checked the BT66 which still has a screw block terminal and had replaced the connection with jelly crimps. The line fault was eventually repaired but I wont bore you with the details