The TLPG1600H is a high-density XPON OLT platform, supporting GPON and 10G GPON. All kinds of PON cards can be mixed plugged. This H-type OLT has 10U, 19inch, it is designed with Telecom Standard Architecture, so it has dual main control boards、dual power supplies, and dual uplink interface boards. For the two uplink interface boards, each one can provide 4 SPF+ uplink ports, it is a compatible design, Which means that you can put a 1GE optical module or 10GE optical module in each uplink port. So the max bandwidth for uplink is 80 Gigabits. There are 14 service cards, each card support 8 EPON ports or 8 GPON ports, or 4 10G EPON ports. The max PON ports are 112 for EPON or GPON and are 56 for 10G EPON. The branching ratio for EPON is 1to 64, for GPON is 1 to 128, for 10G EPON is 1 to 256.