Vista M22 Headset Amplifier and Ooma Telo VOIP adapter
I have tried to use a Vista M22 amplifier with an Ooma Telo VOIP adapter. The Ooma box is 7 years old.
I have tried two M22s hooked to a Northwestern Bell 20600 phone. With both I hear a loud clicking/scratching/static sound that makes conversation impossible. I had tried other phones and got the same result. Switching headsets has made no difference. If I unplug the headset, I still get the noise, though it is less.
I get the same results with both battery and ac adapter power for the M22.
The M22 works fine on land lines with the Ooma Tele disconnected.
Has anyone got this combination to work, or been unable to do so?
Has anyone got the M22 to work with any VOIP system? If so what configuration?