Modular design, multi-combination Optical node, EOC Master,ONU 3 in 1 Optical Node + EoC + ONU EOC Platform ONB4000 including EOC Master and EOC SlaveONB4000 is high performance EOC Platform and multi-function GZB series optical node, which including four low loss EoC data signal insert ports (max. 4). It could be installed EoC master (max. 4), ONU, IP network management responder (class II) and ...