Does anyone know of an adapter of any kind that I can plug my iPhone earphones into a regular landline phone and both use the microphone and hear? I am on the phone a lot in a call center type of environment and I don't like the over the ear options and don't want to pay the $200+ on an expensive "comfortable" headset. More than likely what I will need is something that plugs into the phone jack on the back of the phone and has a female end that the 3mm iPhone earphones can plug into. I have been looking all over and can't seem to find a good solution. Any help with this would be greatly appreciated.