Redundantly operable industrial communication system having - a plurality of communication devices that are redundantly linked to an industrial communication network and that each have - at least a first and a second transmission and reception unit (111, 112), each of which has an interface for a network connection in the industrial communication network, wherein both transmission and reception units have an identical network address, - a signal processing unit that is connected to the first and second transmission and reception units and that has a multiplexer unit for forwarding messages to be sent to both transmission units in parallel and a redundancy handling unit for processing messages received from both reception units, wherein the redundancy handling unit comprises a filter unit that is set up for detecting received redundant messages, - a plurality of network infrastructure devices that are associated with the industrial communication network and that each have - a plurality of transmission and reception units, - a coupling element that connects the transmission and reception units of a network infrastructure device to one another, characterized in that - the industrial communication network comprises a plurality of transmission and reception stations (31, 32) for wireless message transmission, - the industrial communication network comprises a plurality of buffer memory units (217, 311) for message elements that are received by wire at a network node and that are to be sent wirelessly by the latter, wherein the buffer memory units are each associated with a network infrastructure device or with a transmission and reception station, and wherein the buffer memory units each have a maximum buffer size and are designed and set up such that, when the maximum buffer size is exceeded, an oldest message element situated in the respective buffer memory unit is erased from the buffer memory unit, and that, until the maximum buffer size is exceeded, the oldest message element is selected as the next message element to be sent wirelessly. - a plurality of communication devices that are redundantly linked to an industrial communication network and that each have - at least a first and a second transmission and reception unit (111, 112), each of which has an interface for a network connection in the industrial communication network, wherein both transmission and reception units have an identical network address, - a signal processing unit that is connected to the first and second transmission and reception units and that has a multiplexer unit for forwarding messages to be sent to both transmission units in parallel and a redundancy handling unit for processing messages received from both reception units, wherein the redundancy handling unit comprises a filter unit that is set up for detecting received redundant messages, - at least a first and a second transmission and reception unit (111, 112), each of which has an interface for a network connection in the industrial communication network, wherein both transmission and reception units have an identical network address, - a signal processing unit that is connected to the first and second transmission and reception units and that has a multiplexer unit for forwarding messages to be sent to both transmission units in parallel and a redundancy handling unit for processing messages received from both reception units, wherein the redundancy handling unit comprises a filter unit that is set up for detecting received redundant messages, - a plurality of network infrastructure devices that are associated with the industrial communication network and that each have - a plurality of transmission and reception units, - a coupling element that connects the transmission and reception units of a network infrastructure device to one another, characterized in that - a plurality of transmission and reception units, - a coupling element that connects the transmission and reception units of a network infrastructure device to one another, - the industrial communication network comprises a plurality of transmission and reception stations (31, 32) for wireless message transmission, - the industrial communication network comprises a plurality of buffer memory units (217, 311) for message elements that are received by wire at a network node and that are to be sent wirelessly by the latter, wherein the buffer memory units are each associated with a network infrastructure device or with a transmission and reception station, and wherein the buffer memory units each have a maximum buffer size and are designed and set up such that, when the maximum buffer size is exceeded, an oldest message element situated in the respective buffer memory unit is erased from the buffer memory unit, and that, until the maximum buffer size is exceeded, the oldest message element is selected as the next message element to be sent wirelessly.