You know as I look at this PBX room:

I can't help but wonder, if Telecom Guys like us will remember when PBX's use to take up whole rooms... Like computer guys remember Main Frames taking up whole buildings!
So we will go from above to a Server that handles all the voice for a large enterprise system....
What do you think? How many more years before Large Cabinet Systems will be replaced by pure IP and Stackable Blade servers etc...?