Coverage over a smallLarge area like a mall, factory campus, town or city. • The ability to be organized into fleets, groups or individual units, giving virtual private networks, • The ability to have calls connected automatically when the called party becomes available, • The ability to have calls connected automatically as system resources become available, • The ability to change radio groups on demand and over the air from a despatcher, • Private, one-to-one calls, Group calls, even between different fleets, Late entry to group calls