Thanks Loopylou ,you are right, looks like it only supports it at MAS 2.2 SP1 ..next problem is I would expect to go from 2.2 to 2.2 SP1 would be straight forward but I can't find anything in the Mitel doc's to say so .MSL stays the same at 9.2.22 and i don't really want to have to do a complete...