The network processor is configured to execute a quality of {HEAD ~ service module}, an AG ONU monitor module, {TAIL ~ a traffic forwarding module} and an ONU management module 
The network processor is configured to execute a quality of { HEAD ~ service module } , an AG ONU monitor module , { TAIL ~ a traffic forwarding module } and an ONU management module
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH