Wasn't too hard to set up although it wasn't as easy as a Grandstream 286.
I really don't know where we got it.   I VP handed it to me and said "test this".
It was fun to play with.  One of the ring tones was a dog with a mean bark.   (That'll wake you up.)
It also allows you to upload your own ring tones.   I can think of a few things to do with that feature.  None of them really professional.  

Ralph