Before I joined this company, they replaced two Avaya Definity systems with a Mitel 3000. When I was speaking to a Mitel rep, he told me that Mitel was really a software company and didn't care if you bought a Mitel box, or if was a Sun, or an HP, or whatever. He made a similar claim about handsets.
One of my tasks is to dispose of the Avaya systems, the two PBXs and about 180 handsets (digital and IP). My question is, will an Avaya 4606 or 4612 IP handset play nicely with a Mitel 3000?