A:AnswerSame thing happened when I first plugged power into my phone base. I had not yet connected the phone line to the phone connection of the house. If you have connected the phone line to the base unit, I am guessing landline is not connected to that outlet.
A:AnswerThere is a port on the side of the phone marked with a headset icon where to plug in but the port seems much smaller than the the port used for headsets on my cell