This paper first gives a brief introduction to the network management system of GPON and then analyzes the functions of ONT Control/Management(C/M) module according to the protocol stack for C/M planes.

Due to the complex application environment of optical access networks,there are many kinds of applicable PON access technologies,among which EPON(Ethernet PON) and GPON(Gigabit PON) are most typical at the present.

This paper first introduces the structure of the network management system of GPON and then analyses the functions of the subagent ONUs in these systems,focusing on the classified alarms in the these units in the management and control processes.

Design and application of gigabit Ethernet passive optical network in No.12 Mine of Pingdingshan Coal Mining Group;

Then we presented operation principles of both implementations especially for the 10G EPON based on WDMA with different speed in different di.

Architecture of 10 Gbit/s Ethernet passive optical network(EPON) based on wavelength division multiple access(WDMA) using 10 Gbit/s broadcast in the downstream and 1 Gbit/s WDMA in the upstream is proposed,in which point-to-multipoint in downstream and point-to-point in upstream was adopted.