The data is transmitted over a return channel that is established over the satellite to a hub; the hub has {HEAD ~ connectivity} to {TAIL ~ a packet switched network} 
to
The data is transmitted over a return channel that is established over the satellite to a hub ; the hub has { HEAD ~ connectivity } to { TAIL ~ a packet switched network }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL