Abstract: Method for operating an additive manufacturing device of a manufacturing environment comprising one or more additive manufacturing devices, characterised in that data concerning the operation of the at least one additive manufacturing device are transferred from an external data storage device to the at least one additive manufacturing device by means of a separate data connection.

Abstract: In a method for operation of a device in a radio access network of a radio communication system, the device is arranged between a first network element and a second network element of a radio access network, receives at a first point in time from the first network element a first heartbeat and sends to the first network element at a second point in time a first acknowledgement signal as a response to the first heartbeat, with the first acknowledgement signal signaling to the first network element that a connection exists between the first network element and the second network element. At a third point in time the device sends a second heartbeat to the second network element, with the second network element, on receiving the second heartbeat sending as a response a second acknowledgement signal to the device in order to signal to the device the existence of a connection between the device and the second network element.