As I recall, only 4 wires were used - green, red, black & yellow. I believe blue & white were spare. Green & Red could be wired to GN & R on the network, where the 2 white leads of the handset connected. Effectively, you were just bridging the receiver in the handset to the 107 which is an amplified speaker.

Power, (18 volts AC) goes to the black & yellow leads. Power was usually supplied by a little wall wart transformer - a 2012B, but any source of 18VAC should work.

I believe you could also wire the unit across Tip and Ring of the line and that would work too, but I really don't remember.

PLEASE NOTE: This is a speaker ONLY - not a speakerphone. There is not transmit, only receive. It was designed to sit on a desk where people would listen to one person talk on the phone and then they could hear the other side of the conversation through the 107.


Sam

"Where are we going and why are we in this hand basket?"