FIG 7 is {HEAD ~ a diagram} of {TAIL ~ one embodiment} of a power aware and wirelessly protected passive optical network 
of
FIG 7 is { HEAD ~ a diagram } of { TAIL ~ one embodiment } of a power aware and wirelessly protected passive optical network
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