Alright, I have 4 different 100 systems 2 have a problem with a weird clicking or poping noise on intercom and outside calls on several stations. then 2 have trouble getting a couple of outside auto attendants to accept dtmf tones, they just keep playing the attendant message and its like they never recieve tone(I am calling into them from these 100's over a pri circuit) almost all other auto attendants work properly.