We currently have a Mitel switch which is not VOIP. Its digital, but not VOIP. Thus the line itself carries data displayed on the phones screen. Is there any software or method for to be able to plug in a headset or device so that I can answer my phone a few feet away from me wirelessly? My ideal set up (the reason for my question) is that I would like to somehow be able to receive the call (extension to extension as well as outside calls) on my computer and answer them with my bluetooth headset or other headsets. I am pushing for an upgrade to the modern world if IP systems. Any Ideals??