I installed a visonic powermaster 10 alarm system in November connected to phone line all working fine until customer changed phone line to bt infinity fibre optic.
bt disconnected alarm from phone line because alarm interfearing said needed filter have tried adsl filter but still not working. do I need a different filter for it ? help please
bt disconnected alarm from phone line because alarm interfearing said needed filter have tried adsl filter but still not working. do I need a different filter for it ? help please