... a high-end routing switch. EP8500 OLT series includes EP8510 (10-slot),EP8506E (6-slot) and EP8503 (3-slot) three models ... production efficiency.Main Features:1. Carrier-grade reliability: system main control unit, power supply and other key modules all can be copied ... : L2/L3/L4 wire speed switching, QoS,MPLS,NAT,bandwidth control,multicast and other advanced functions, providing a strong support of ...