The radio communication unit then receives information regarding {HEAD ~ availability} of {TAIL ~ the specified radio communication services} 
The radio communication unit then receives information regarding { HEAD ~ availability } of { TAIL ~ the specified radio communication services }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL