Such a meeting is normally used to put in place an agreement on use of frequencies for services such as broadcasting.
An important conference was held in Stockholm from 26 May to 22 June 1961, 38 countries were part of that meeting.
The snappily-named "RRC-04/06" was a Regional Radiocommunication Conference held in two sessions between 2004 and 2006.
It put in place a new agreement and frequency plan for digital broadcasting (DVB-T and T-DAB) in Bands III, and IV & V for the whole of Region 1 and Iran from Region 3.
It is intended that the resulting Plan and Agreement will replace those drawn up in Stockholm in 1961, and Geneva in 1989.