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