The SDX 6320-16 GPON OLT is an open, disaggregated system that is designed to be scalable for “pay-as-you-grow” open systems. The 1.5RU OLT supports 16 GPON, XGS-PON, or Combo PON ports with a high-capacity architecture supporting up to 128 Optical Network Units (ONUs) per PON. The OLT offers four 100GE and four 10GE uplink interfaces with embedded redundancy options to ensure scalability to support next generation residential, business and mobile backhaul.