PR8,
(Does PR8 stand for Page Rank 8?)
I looked up what I could on the handset. I think that it needs to be run off of a propriatory Panasonic KSU. I say "think" because I couldn't tell for sure. But, if the set will run off of analog dialtone, like at home, it will work. You'd just need an analog line off of the Mitel 3300 PBX.
Ralph