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