... Passive Optical Network (EPON). This product supports integrated access service, such as broadband surf-netting, IP voice, IPTV, ... , load balance operating, auto-seamless switch whichever power broke down, no service interruption.Hot-swappable components, all PON/Ethernet interfaces ... diagnosis and distance measuringRedundant backupSupport AC/DC dual power protection OLT EPON 10PON GEPON/EPON V1600C