What a biatch fest, you guys should step back an couple centimeters.
As far as moving from one system to another, it is all telephony, if you know the lingo, and the concepts it is not that hard to figure out the interfaces, and be good at more than one. In fact I have never met anyone who was great with one system who was not also highly skilled at other phone systems. Being a one pony show just means you are very seriously limited in your experience and scope of knowledge. Being an expert really does take more than understanding the point of view of more than one system, sorry if you do not understand the concept. I do not care if you know Avaya, or Shoretel, or Nortel, or comndial, or toshiba, or anything out there, if you only know one system, you are not an expert in telephony, or the phone business, especially if it is all IP, or all TDM that you know. My God, it is like saying you are a languages expert when you are not even bilingual. Stop kididng yourself, and get a second language.
How can you consdier yourself an expert in communications systems if you do not know how to implement more than 1, 2, 3, or 4 platforms?