Landline issue

Hello,

Our set up; virgin broadband, TV & landline. We have an old nynex box on the wall outside and an NTL box on the inside both there since the late 90s. Next to the NTL box we have a double phone socket (with no company id). The landline was used for a number of years but hasn't been for the last 10 to 12 years. It's been retained to keep the package cost down. We also have a regularly used BT landline. I now want to move the BT landline number to virgin, replacing the existing virgin number and upgrading the phone package to match that of BT (or as close as can be). Before trying to arrange this I thought I'd better check the virgin line still works; it doesn't (no dial tone), using either of the two sockets. No idea how many years this may have been a problem. The phone and cabling used to test the line work ok with BT. The online status check doesn't identify any faults. The number still exists; when called it apparently rings endlessly. There have been a number of engineer visits since the phone was last used. One was to replace the cable across the garden, from the house to the street, and another was to temporarily connect us to an unsused but still connected nynex box next door while an unspecified fault in the area was fixed. I'm wondering if the phone connection wasn't correctly reinstated at some point. In November 2023 I received a text saying the digital voice switchover would be happening in Jan 2024 and an adaptor would be sent; it never arrived. I've recently discovered the change was suspended for a time but has now resumed. Just in case the switch had been done I connected the phone to the TEL1 socket on the hub using the equivalent of the adaptor, made from spare cabling and connectors. It didn't work of course. I'm now wondering if, rather than have someone investigate and maybe fix an issue with a system that is about to be decommissioned, I could be switched to digital now?

Any thoughts or suggestions?

Thank you.