A time slotted version provides for {TAIL ~ even higher efficiencies}, and priorities can be assigned to {HEAD ~ individual message packets} 
A time slotted version provides for { TAIL ~ even higher efficiencies } , and priorities can be assigned to { HEAD ~ individual message packets }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD