How can a network cable divide the phone and the network?

　　A network cable can indeed be used for both telephone and network connections, mainly due to the excess core wires inside the network cable that are not used for network tranSMission. Usually, a standard network cable (such as CAT5e or CAT6) contains 8 core wires, while in 100Mbps or 1000Mbps network transmission, only 4 of them (white orange, orange, white green, green) are actually used to transmit data. Therefore, the remaining 4 core wires can be used as telephone wires. Here are the specific steps to divide a network cable into telephone and network:

　　required materials

　　Network pliers

　　Phone crystal head

　　Network crystal head

　　step

　　Peel off the network cable: Use network pliers to peel off both ends of the network cable to expose the 8 core wires inside.

　　Core wire distribution:

　　Network part: Select 4 core wires (usually white orange, orange, white green, green) for network connection. According to the wiring standard of the network crystal head (such as TIA/EIA) 568B standard) insert the four core wires into the network crystal head.

　　Telephone part: The remaining 4 core wires (white-blue, blue, white-brown, brown) can be used for telephone connection. Select two of them (usually white-brown and brown, as they are the colors commonly used in telephone lines) for telephone connection and insert them into the telephone crystal head. If the telephone crystal head is 4-core, you can choose any two core wires to access, but it is usually recommended to access the two interfaces in the middle to ensure the best signal quality.

　　Press-fit crystal head: Use the network cable port and telephone port on the network pliers to press-fit the network crystal head and the telephone crystal head respectively to ensure that the connection between the core wire and the crystal head is firm.

　　Test connection: Connect the made network cable to the network device and the phone device respectively, and test whether the network connection and phone call are normal.

　　Precautions

　　Core wire sorting: When making network wires, it is necessary to ensure that the core wires at both ends are in the same order, otherwise the network connection may be unstable or impossible to connect.

　　Shielded and unshielded network cables: If using shielded network cables, it is necessary to ensure that the shielding layer is not damaged during connection and is properly grounded. However, for ordinary home or office applications, unshielded network cables are usually sufficient.

　　Telephone line type: The type of telephone line (e.g. 2-core or 4-core) depends on the interface of the telephone device and the desired function. When selecting core lines, make sure they match the interface of the telephone device.

　　With the above steps, you can use a network cable for both phone and network connections. This not only saves material costs, but also improves wiring flexibility and efficiency.