OTS3000-NMU is a function card for optical communication platforms that provides network management capabilities. It uses an ARM9 processor and supports 10/100Mb/s Ethernet or 100Mb/s SFP optical interfaces. The card allows for GUI configuration and management of performance, alarms, and safety through LCD display, SNMP, web, and other network protocols. It has a compact size to save function card slots and supports hot plugging.