A private mobile radio network installation includes a plurality of devices each including a local private mobile radio network infrastructure including a core network module, a subscriber server and a base station module; a management system; and a network interface; wherein the devices are connected therebetween via their network interfaces, and wherein the management systems are configured to choose one of the devices; and connect the base station module of each device to the core network module of the chosen device to form a distributed private mobile radio network infrastructure.