4U modules (19 inch, 177mm high) are designed for large FTTH projects with the highest connection densities. They offer maximum capacity in the smallest of spaces. Typical specifications: 4U systems enable high-density installations in data centers, large residential complexes. The FTTH market today offers a bewildering variety of different module systems: from compact 1U solutions to high-capacity 4U systems, from simple splice modules to complex ODF architectures. Each variant has its justification, but not every one is suitable for every project. This tutorial explores the essential aspects of FTTH, including network architecture, configuration and the various technologies involved, such as AON, PON, EPON, and GPON. If you are new to fiber optic network design, we. With the rapid growth of bandwidth-hungry services such as 4K, 8K, VR, and HD video, the fiber to the home (FTTH) industry has attracted wide attention from operators, and is now in a period of explosive growth. Why FTTx? ● Lower energy consumption and greater power efficiency ● Easier to install and compact form factors ●. During the FTTH Conference 2023, the FTTH Council Europe issued an updated version of its renowned FTTH Handbook, prepared by the Deployment and Operations Committee. The FTTH Handbook is a resource for the fibre community.