The receiving unit is selectively connected to a transmitting unit that is configured to transmit the data over a return channel that is established over {HEAD ~ the satellite} to {TAIL ~ a hub} 
to
The receiving unit is selectively connected to a transmitting unit that is configured to transmit the data over a return channel that is established over { HEAD ~ the satellite } to { TAIL ~ a hub }
OTH OTH OTH OTH 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 HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL