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