The Cat.3 large-pair cable is mainly designed for voice or data trunk network low-speed communication network.Any 4pairs of core cables can support 10Mb Ethernet(IEEE802.3)application and be used for horizontal cabling or structural vertical trunl line.All
transmission performance indicators exceed requirements for related levels specified in the international standard TIA/EIA 568A and the national standard YD/T1019.
Mainly used for indoor trunk voice circuits