Specifically, {HEAD ~ the embodiments} of the invention relate to a system and method for using alternate routing through {TAIL ~ an aggregate optical network unit} to cost effectively improve protection and improve energy efficiency 
Specifically , { HEAD ~ the embodiments } of the invention relate to a system and method for using alternate routing through { TAIL ~ an aggregate optical network unit } to cost effectively improve protection and improve energy efficiency
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH