Hi, I'm not sure about the Versatitlity however I have had a look a the inspiration manuals
here and it appears that it is possible to program an extension position as a PA port.
The Inspiration is very similar to the Revelation and I have configured my Revelation so that one of the extension ports acts as a PA output when dialled - the caveat is that you will need something like
this connected to the nescassary extension port as the amplifier.
I'm sure I tried with a standard loudspeaking telephone left off hook on my Revelation PA extension port, I can't recall if the line timed out after so long in that case though.
Regards
Andrew