These modules, AFE and {HEAD ~ DSP}, may be found on {TAIL ~ a single universal line card} 
found on
These modules , AFE and { HEAD ~ DSP } , may be found on { TAIL ~ a single universal line card }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL