While I can get the "put call on hold, dial *5" scenario to work (I even get a blinking park key on my Snom phones), I'm wondering if there isn't a way to have a single programmable key on a phone that would directly park the call.
Likewise, the Aastra i5x series seems to have programmable or static park / pickup functionality - has anyone gotten those to work? While I can program those buttons, they never seem to do anything whatsoever.