Local area network (LAN) is the basic unit that constitutes a high-speed information network, connecting intelligent buildings, buildings, grassroots units in local areas and even each family to the information highway to exchange information with the Internet at home and abroad.

　　4 pairs of five, five, and six pairs of twisted cables are horizontal wires used by the horizontal subsystem in the local integrated wiring system, which are used for the wiring between the system's working area communication lead end and the distribution frame between the junction (i.e. the connection between the communication cable box and the distribution frame). It is laid between the threaded pipe, wire trough and ceiling or floor partition, so that the system supports a variety of applications such as voice, data, text, image and video.

　　This company produces the LAN CABLE is mainly for the 4 to 100 Ω UTP (block), FTP (not shielded twisted-pair aluminum foil total shielded CABLE) and S - UTP (not shielded twisted-pair enhanced double shielded CABLE) three forms.

　　Non-shielded cable is used in ordinary occasions. Shielded cable is manufactured by special process, which is more suitable for the requirements of data security transmission, such as military, hospital, airport and telecommunication room.

　　Digital communication cable products are specifically applied to the following LAN systems:

　　* 1000 base - T4;

　　* 100 MBPSTP - PMD;

　　* 100 base - T2 / T4;

　　* 100 vg - AnyLAN;

　　* 55/155 mbpsatm;

　　* 10 base-t;

　　* 4/16 MBPS Token Ring.

　　Connection of cables

　　1. One end of the cable is connected to I/O information outlet (communication junction box), and one end is connected to the distribution frame.

　　2. The cable and RJ45 crystal head pressure are used for connection and interconnection between HUB HUB, server and computer.

　　Installation instructions:

　　The cable can be connected to the information module and rj-45 crystal head in either the TIA/EIA-568B standard T568A or T568B, but the connection mode of the entire network is required to be consistent.

　　1. For connection with I/O information outlet, you only need to plug the 1st to 4th pair of wires into the IDC (insulation replacement) connector on the back of the socket according to the color code, and then press with the special stamping tool to ensure that the split wire pair can be connected to the metal pin of the socket in the correct order.

　　Iii. Product standards

　　"YD/ t1019-2001 solid polyolefin insulation level pair twisted cable"

　　Product identification

　　1. Conductor: the standard requires that the conductor of digital communication cable should adopt the electrician soft round copper wire. The diameter of the solid core conductor is shown in the following table:

　　Cable conductor diameter /mm

　　Line 5 (cat.5) 0.5

　　Hyperfive lines (cat.5e) 0.5 or 0.52

　　Six class lines (cat.6) 0.6

　　2. Appearance recognition of naked copper wire: the bare copper wire is reddish;

　　3. Insulation: adopts HDPE, with smooth surface and excellent elongation;

　　4. Sheath: flame retardant polyvinyl chloride is adopted to meet safety requirements;

　　5. Mark: meter is adopted, and the distance between two adjacent marks is 1 meter.