Fiber to the Home (FTTH) technology is an important part of modern communication networks, which aims to connect high-speed Internet services directly to users' homes through optical fibers. In this process, the FTTH box, as a key component, undertakes several important functions.

1. Fiber connection
The FTTH box is first responsible for bringing optical fiber from the external network into the user's home. It converts the optical signal from the optical cable into an electrical signal that can be used by the home network, ensuring that users can access the Internet smoothly. In this way, the FTTH box realizes the connection between optical fiber and home network devices (such as routers, switches, etc.).

2. Signal distribution
FTTH boxes are usually equipped with multiple ports to distribute signals to multiple devices in the home. This signal distribution function allows multiple users to access high-speed Internet at the same time without affecting the quality of their respective connections. This is especially important for users with multiple smart devices in the home.

3. Protecting fiber lines
The FTTH box also plays an important role in protecting fiber lines. It provides physical protection for the optical fiber to prevent environmental factors (such as moisture, dust and physical damage) from affecting the optical fiber. In addition, FTTH boxes are usually made of durable materials to ensure stability under different environmental conditions.

4. Terminal device connection
FTTH boxes provide connection interfaces for end users, allowing users to directly connect to routers, network switches or other network devices. Through these interfaces, users can easily expand their network environment and improve network coverage and performance.

5. Management and monitoring functions
Many modern FTTH boxes also integrate network management and monitoring functions, allowing service providers to monitor network performance in real time. These functions can help operators discover and solve network problems in a timely manner, thereby improving user experience and network reliability.

6. Provide additional services
In addition to basic Internet connection, FTTH boxes can also support other value-added services such as IP TV, voice communication, etc. This versatility makes FTTH boxes the core device of home networks, meeting the diverse needs of users.