A method and system enabling a user to request volume control of another users device according to an agreed policy containing criteria is described. A first device receives (60) a radio message from a second device, accesses (62) the policy to determine (64) whether or not (65,66) to adjust (68) the output volume in dependence on the criteria, and acknowledges the message (70). The system and method may be implemented in communal living buildings such as hotels or halls of residence, with the policy centrally maintained. Hence, criteria such as threshold volume levels and quiet periods may be negotiated between users and defined in the policy. Request messages and acknowledgements may be stored in a log and used in the event of repeated disputes concerning loud music and antisocial behaviour between neighbouring device owners.