a control unit that is designed to convert an Ethernet telegram received via the first interface into an internal data telegram and to output {HEAD ~ the internal data telegram} via {TAIL ~ the second interface} 
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a control unit that is designed to convert an Ethernet telegram received via the first interface into an internal data telegram and to output { HEAD ~ the internal data telegram } via { TAIL ~ the second interface }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL