Interesting. I also have a Panasonic answering machine. This morning some folks tried to call us multiple times, each time the phone would ring, the answering machine would display "Answering" but they never heard the announcement message. I verified by calling it myself from my cell and got the same behavior. The answering machine has been working since we switched to voipo 3-4 months ago so I'm not sure what changed. We have had problems where callers can hear us if they initiate the call and I have a support ticket open for that...but this "no answer" is a new one for us.