Bill, I've often run the ringers on 500 sets on AC mains. No problem. Not sure if I have a circuit to run on 2 wires. But if you are using JK, quad, you've got an extra pair for signalling. You might be able to come up with something if the phones have a-lead control in the hook switch. Mike Sandman may have an alternate solution. regards, mm
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8 years ago