Hello,

I recently went to a customers site that had complained the fax line hadn't worked. When I traced out to 66 block, I noticed it had the wiring from the provider punched down as well as the cable to the fax and also a cable to what I am assuming was the alarm panel. When I took that wire off and just connected to fax, the line worked perfect, but when I connected the alarm line back and connected my buttset I got nothing? Could someone please explain, I am not familiar with how the alarm works