In the paper it is introduced that IEEE 802.3 EFM group is researching and developing a standard EPON technology (i.e. IEEE 802.3 ah standard), also the advantages and key technologies of EPON as a broadband access technology are presented.

• 文中比较系统地介绍了 IEEE 80 2 .；3EFM (Ethernet for the L ast Mile；以太网最后一公里 )工作组正在研究和制定其标准的 EPON技术 (即 IEEE 80 2