All areas have DV for new BT customers that require a phone service , so in that sense every ‘area ’ has DV ( it’s not delivered from the exchange) , and customers recontracting may be able to individually move from PSTN to DV ( that’s what I did when I changed my broadband contract ) but it’s not to be confused with a BT instigated migration where BT contact the customer and state that the migration to DV is imminent, a prerequisite for DV is a SH2 , so if someone is told by BT that they are to be migration to DV and they don’t have a SH2 they are sent one .
If someone had a SH2 , but were not on DV , and the PSTN phone service developed a fault , it’s nonsense to suggest that by simply plugging the phone into the SH2 the migration to DV will miraculously take place , it may be possible to call BT and ask for a migration to get around the PSTN failure , but that will probably require a new minimum term so may not be a good solution for some , for those it’s a case of waiting for whatever the problem is to be fixed.
If broadband is working and the PSTN phone isn’t , and it’s a problem affecting many customers, it suggests an E side cable problem , that’s the major cables from the exchange to the cabinet , the FTTC broadband service would be unaffected by this
