... 3. GDIOS system Optical Line Terminal: EP8500 OLT SeriesEP8500 Series EPON OLT is a new generation high-end multi-service OLT ... rights, integrated with MPLS,IPv6,network safety,EPON passive optical network and so on multi-service, it provides uninterrupted ... transmit,graceful restart,ring protect and many other high reliable techniques. These techniques obviously increased the max uptime ...