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