I'm in the process of installing my first alarm system (Vista 15P) in my newly constructed home. I've got everything working correctly (with thanks to the help on this web site), except the AT&T DSL telephone connections.
The telephone installer came yesterday and I asked him to connect the "yellow" four wire alarm wire (pre-installed by the builder) to the outside telephone junction box. The way I understand it, the red and green wires go to the alarm panel and the two remaining wires go back from the panel to the phone box. This way the alarm can sieze the line during an alarm. When he asked me to test the phones for a dial tone, there was none. He concluded that I must have wired the RJ31X wrong and if I fixed that everything should work.
Well since then I have rechecked the wiring on the RJ31X and everything seems to be correct.
I've tried bypassing the alarm system all together by tying the red and yellow together and tying the green and black together to completed the circuit. No matter what pairs I connect, I can not get a dial tone - nor can I get the alarm to dial out.
Now I don't have either a telephone or a alarm system.
Any help would be appreciated.
P.S. I also tried bypassing the RJ31X by taking the wires straight to the panel. That didn't work either.