Comtrend’s GB-4100 GPON (Gigabit-capable Passive Optical Network) SFU ONT is a Triple-play platform that provides a high-speed data-access corridor for media devices according to the ITU-T G.984 standard. In addition to a three-wavelengths GPON optical module, the GB-4100 includes a cable TV interface and 10/100/1000M Ethernet LAN port. Easily controlled by a remote system that is flexible enough to interoperate with the OLT units of different venders, the GB-4100 also supports DBA（Dynamic Bandwidth Allocation）algorithm and QoS.