An LTE connection response message is sent to {HEAD ~ an E RAN} to set up {TAIL ~ an SIP RAB} to the UE 
to set up
An LTE connection response message is sent to { HEAD ~ an E RAN } to set up { TAIL ~ an SIP RAB } to the UE
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH