N Cook wrote:
Main system does not seem to recognise there is an active phone line
connected.
Should show alternately "HO" or "00" on pressing one of the buttons , just
beeps and 2 character
display stays at "o" and no activation to ring pulses.
Phone and tape sections working order - anyone any specific knowledge ?



You'll have to open it up and do some troubleshooting, once you figure
out how it detects the presence of voltage on the line you can probably
figure out why it's not detecting it. The problem is likely fairly simple.