Upon receipt of {HEAD ~ response SIP data} for {TAIL ~ the SIP data}, the response SIP data is sent through the SIP RAB 
for
Upon receipt of { HEAD ~ response SIP data } for { TAIL ~ the SIP data } , the response SIP data is sent through the SIP RAB
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH