I sometimes like to use a regular plug-in headset with my cell phone. Until now, my cell phones have taken the regular 2.5mm phone headset. So I have several 2.5mm headsets lying around (I use them on the house phone as well). Is there an adapter to allow me to use the 2.5mm telephone headsets with the DInc2 and it's 3.5mm jack?? Or am I the only person on the planet that isn't in love with bluetooth?