wherein {HEAD ~ the internal data telegram} has {TAIL ~ a shorter data length} than the received Ethernet telegram  
has
wherein { HEAD ~ the internal data telegram } has { TAIL ~ a shorter data length } than the received Ethernet telegram
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH