The emergency services network (ESN) will provide the next generation integrated critical voice and broadband data services for the 3 emergency services and over 300 other public safety organisations.A single, cost effective, integrated and modern emergency service communications network will support communication under even the most challenging circumstances, providing critical voice and broadband data services that are:enhanced: to provide integrated broadband data servicesflexible: to better match and be responsive to user needsaffordable: to address financial pressures on central and user budgets