I think some Dispatchers, and presumably ALL Ops/load Controllers would require a degree of R/T training for ground to air communication.
Certainly I have seen instances where the flight deck radio ahead, to advise handling agents of any special assistance required, pass fuel figures, give estimated times of arrival etc. Especially if the airline has a very tight turnaround time (a la Ryanair). Having fuel figures in advance is a HUGE bonus in tight turnarounds.
RTG!