The ‘obviously’ comment is not intended to be a negative , simply noting than if you are on DV and the router administration says DV is ‘not configured’ then it’s obviously a configuration problem , you should be but aren’t setup for DV , so there is nothing you can do apart from advising BT , but if you are not on DV , ( that’s what I suspect) that administration item on the router menu is irrelevant, all BT customers than are not yet moved onto BT DV will see that message on their BT router.
As far as it’s a hassle to check the master socket etc. , it is , but potentially saves being charged for a visit that turns out to be something like the phone itself is faulty….you can still report a line NDT without doing anything yourself , it’s just if the engineer visits and it’s not a BT or Openreach ‘problem’ then the visit potentially is chargeable.
If you think it’s not going to be anything within the home , just report it , ‘No dialtone’ , if Openreach fail to turn up due to their own problems ( engineers going sick , van won’t start etc ) that doesn’t cancel the visit it’s simply needs to be rescheduled .
