The stations in the standby state detect in {TAIL ~ this sequence} part of the sequence which coincides with their own standby law and accordingly deduce their relative displacement with {HEAD ~ respect} to the calling station 
The stations in the standby state detect in { TAIL ~ this sequence } part of the sequence which coincides with their own standby law and accordingly deduce their relative displacement with { HEAD ~ respect } to the calling station
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH