The SIP data is sent to a corresponding destination network node using {HEAD ~ NAS control information} included in {TAIL ~ the NAS control message} 
included in
The SIP data is sent to a corresponding destination network node using { HEAD ~ NAS control information } included in { TAIL ~ the NAS control message }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL