phone not working. rings, but nothing after that

phone rings, and i pickup phone and hit the talk button to pickup phone. but then no sound from who ever is calling me.   

if i call someone else, no sound from them, or me.

if someone calls me, it all goes to voice mail, and i can retreive information through the automated email that sends a couple of the voice mail. 

internet works fine. 

MODEL: MTA6328-2Re

power green solid

run green solid

wan orange solid

lan orange solid

voip green solid

phone 2 black solid (no dail tone)

phone 1 orange blinking (dail tone)