In step 512, if the first receiving device does not have an unused tuner, {HEAD ~ step} 516 may communicate {TAIL ~ the recording request} to the network 
communicate
In step 512 , if the first receiving device does not have an unused tuner , { HEAD ~ step } 516 may communicate { TAIL ~ the recording request } to the network
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH