The '' ' Queensland Government Wireless Network ' '' ( referred to as the '' ' GWN ' '' ) is a trunked radio system operating in the state of Queensland , Australia . The network was built and is currently managed by Telstra under contract . The network commenced operation in 2014 , and was operational for the 2014 G20 summit in Cairns . Following that event , the network was re-purposed and is now the main communications network for emergency services in South East Queensland
2014 G20
2014 G20 Brisbane summit
Government radio networks in Australia