A method for activating and maintaining a plurality of separate and distanced functional units in an aircraft cabin, in particular an emergency oxygen supply system for passengers of an aircraft, comprising the steps of: - initializing a wireless network comprising a plurality of nodes, wherein each node is associated with a device, in particular a remotely operable device wherein said initializing comprises associating each node a sending time slot within a time frame using a TDMA synchronization scheme, - wherein each node is active to send signals during its sending time slot and is active to receive signals during a first set of time slots comprising a number of time slots of said frame, - wherein the sending time slot of a node is different from the sending time slots of at least a plurality of its neighbored nodes, preferably all the neighbored nodes, wherein a neighbored node of a node is defined to be within a predetermined distance to said node, - sending an activation signal from one of the nodes to at least the plurality of nodes in a predetermined neighborhood distance to said node, - wherein each node after having received said activation signal transmits said activation signal during the sending time slot associated to said node to at least one neighbored node, wherein the network is configured to switch from a first network configuration to a second network configuration for adapting to two or more different operating conditions, wherein the first and second network configurations are different in the trade off of response time versus energy consumption in that - the first network configuration defines a different number of hub sending slots in every frame than the second network configuration, - the first network configuration defines a different number of sleeping time slots for each node in every frame than the second network configuration, - the first network configuration defines a different number of receiving time slots for each node in every frame than the second network configuration, - the first network configuration defines a different range of neighborhood for each node than the second network configuration, - the first network configuration defines a different number of sending time slots for each node in every frame than the second network configuration, and/or - the first network configuration has a frame configuration wherein a first set of frames has a first time slot configuration and a second set of frames has a second time slot configuration different from the first time slot configuration and the second network configuration has a second frame configuration different from the frame configuration of the first network configuration, wherein the first network configuration is a low energy configuration having a first, long response time and the second network configuration is a fast transmission configuration having a second, shorter response time, and wherein the first and second network configurations are preconfigured and stored in the network. - initializing a wireless network comprising a plurality of nodes, wherein each node is associated with a device, in particular a remotely operable device wherein said initializing comprises associating each node a sending time slot within a time frame using a TDMA synchronization scheme, - wherein each node is active to send signals during its sending time slot and is active to receive signals during a first set of time slots comprising a number of time slots of said frame, - wherein the sending time slot of a node is different from the sending time slots of at least a plurality of its neighbored nodes, preferably all the neighbored nodes, wherein a neighbored node of a node is defined to be within a predetermined distance to said node, - sending an activation signal from one of the nodes to at least the plurality of nodes in a predetermined neighborhood distance to said node, - wherein each node after having received said activation signal transmits said activation signal during the sending time slot associated to said node to at least one neighbored node, - the first network configuration defines a different number of hub sending slots in every frame than the second network configuration, - the first network configuration defines a different number of sleeping time slots for each node in every frame than the second network configuration, - the first network configuration defines a different number of receiving time slots for each node in every frame than the second network configuration, - the first network configuration defines a different range of neighborhood for each node than the second network configuration, - the first network configuration defines a different number of sending time slots for each node in every frame than the second network configuration, and/or - the first network configuration has a frame configuration wherein a first set of frames has a first time slot configuration and a second set of frames has a second time slot configuration different from the first time slot configuration and the second network configuration has a second frame configuration different from the frame configuration of the first network configuration,