Deploy VOIP technology for all IAA VHF / UHF transmitters and receivers to enable the Air/GND role allocation adoption of the VOIP 4G VCS in order to facilitate the Management of Dynamic Airspace configurations, Deploy a new VOIP 4G VCS for the new Enroute Contingency Centre to enable dynamic role allocation adoption in order to facilitate the Management of Dynamic Airspace configurations,Deploy a new IAA IP Data Communications network for inter-connecting of VHF Radio sites and ATC Centres to enable the Management of Dynamic Airspace configurations,Deploy enhancements to existing operational voice communications switches to enable VOIP connectivity between all IAA ATC Centres and Towers to enable dynamic role allocation adoption in order to facilitate the Management of Dynamic Airspace configurations across all IAA sites.