Partyline: What is the HB-704 intercom line connection pin-out?
Pin 1 = N/C
Pin 2 = Audio/Channel A
Pin 3 = Audio/Channel B
Pin 4 = Voltage
Pin 5 = Ground
Pin 6 = Audio/Channel C
Pin 7 = Audio/Channel D
Pin 1 = N/C
Pin 2 = Audio/Channel A
Pin 3 = Audio/Channel B
Pin 4 = Voltage
Pin 5 = Ground
Pin 6 = Audio/Channel C
Pin 7 = Audio/Channel D