What is FTTH? Fast, low latency and high-volume information communications are growing rapidly in the world, which also increases the demand for millions of Internet users and customers for cheap high-speed access. FTTH box is one of the most important technologies in today's and tomorrow's networks because it's not only Increased access to bandwidth, and reduced equipment and maintenance costs, while greatly improving the quality of service. If the fiber can reach the home and eventually on our desktops, this is due to the small and effective development of the deployment and design of passive optical networks. After completing the EPON infrastructure that is sufficiently complex to accommodate the housing or office appearance, it is worth studying how to connect the data to the home using the right device and associated connection procedures. Therefore, the contents of the EPON OLT and ONU connections and configurations are described here. All PON manufacturers and including ONU equipment suppliers ensure that their products can provide automatic configuration, automatic discovery, automatic authentication, automatic updates and other functions. All PON manufacturing and ONU equipment suppliers include Cozlink to ensure that their products can provide automatic configuration, automatic discovery, automatic authentication, automatic updates and other functions. Extinguishment of the equipment will cause EPON to stop working after a while. Power work may also have some errors. In order to solve this situation, it is recommended to determine that the voltage is neither too high nor too low Check the environment where the EPON equipment is stored, fully ventilated, and the cooling system of the EPON equipment should work properly. All in all, FTTH box is not a distant dream. PON devices are designed to facilitate easy installation and automatic configuration and other functions, can reduce the network users in the correct slot to insert the correct cable work. GreenTel provides various shapes DOME Fiber Closure. All the closures we offered are with a great sealing performance. High quality ABS material also ensures the durability whether the closure is in air, in pipeline or buried underground.