Radio all programmed up fine,Dip switches in digital junction box set and per manual,proper cables being used. RCH 3000 will change channels,volume up and down, zones too. Problem is no audio from the handset during TX and RX. I can hear the volume change in the handset and RCH3000 speaker but no audio if it receives radio transmission,. During TX no audio is passed out of the hand set either. Checked plugs and even changed out the handset. RCH3000 are new out of the box.