My polarity test is from Radio Shack, a two line model with two LEDs. Yes, it has a short modular cord that plugs into a modular jack. The telephone tester I am using is a Teltone TLS3. I would hope that the TLS3 has the polarity correct as does the Radio Shack polarity tester. Otherwise, they are both wrong and phone is right. Interestingly, another Princess TT phone I tested also could not "dial out" but haven't had time to test it any further. Are you on to something, Arthur?
