Standby laws {HEAD ~ Li} having frequency jumps deduced from the traffic law L are applied during the silent periods of {TAIL ~ the network} 
Standby laws { HEAD ~ Li } having frequency jumps deduced from the traffic law L are applied during the silent periods of { TAIL ~ the network }
OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL