Well a voice professional is that works on the IP based telephony ssystem, by that i mean phones that you have in your office are mostly ip based phones specially if those are Nortel, Avaya or Cisco, a voice professional is one who sets up that network and enables all the phone network in organizations to work smoothly, Secondly as far as going back to school goes well in IT you cannot stop studying bcuz it is one certification after another and the moment you stop your position becomes stagnant and vulnerable, so education is part of the job but going back to full time skool is kind of tough but not impossible.