Quote Originally Posted by bill875 View Post
Just for the record, I too have experienced hearing DTMF tones when my mom calls out from the VOIPo line to my POTS line at my office. It is irritating and I too would like to know how to solve it.

Also, mostly when talking to someone on a cell phone, the person on the cell phone claims to hear an echo of their own voice. These are the only problems I've had though.
I have had the echo crop back up again. It seems to come and go.