EP8204 is designed for chassis OLT device which provides 4 downlink 1000M PON ports, 8 uplink GE Combo ports by GOM. The height is only 1U for easy installation and space saving. Each PON supports up to 64 terminals, the whole device supports up to 256 ONUs under full configuration. EP8204 adopts advanced technology to support SLA and DBA to keep strong function on the Ethernet and QoS features. EP8204 is applied for commercial and grid network digital management to provide perfect, smart, strong, advanced, professional solutions for “automatic distribution” and “electricity information collection” in the implemented project for the national grid.