Interruption phases are inserted in {HEAD ~ a UMTS transmission} in {TAIL ~ order} to monitor GSM base stations 
in
Interruption phases are inserted in { HEAD ~ a UMTS transmission } in { TAIL ~ order } to monitor GSM base stations
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH