Author Topic: ITT Common Audible Units  (Read 311 times)

Offline Babybearjs

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ITT Common Audible Units
« on: September 22, 2016, 08:12:07 PM »
well.....someone had them, and now they are mine! I got 4 CAU's for my ITT 576 phones. these could even be used on my 544's! I tried to connect one to a 564 and it failed.... I wired it as instructed and got no signaling. finally connected the black wire to my T1 connection and got "Some" signaling... but nothing like what I was expecting.... Test Results: Failed. Requiring further testing.... Based on what I'm seeing, this unit is a version of a Diode Matrix....
« Last Edit: September 23, 2016, 03:53:57 PM by Babybearjs »
John