Twist-Paircommon there are three types of lines, cat5e cableand cat5 cable, as well as the cat6 cable, the former diameter thin and thick latter diameter, model are as follows:
1) A line: mainly used for voice transmission (standard mainly used for a class of the early 1980s before the telephone cable), different from the data transfer.
2) Category II line: 1 MHZ frequency of transmission for voice transmission and a maximum transfer rate of 4 Mbps data transmission, common norms in the use of 4 MBPS token passing of the old agreement token network.
3) three lines: that in the current ANSI standards and EIA/TIA568 designated Cable, Cable transmission frequency 16 MHz, used for voice transmission and a maximum transfer rate of 10 Mbps data transmission for 10 major BASE - T.
4) four lines: Cable such transmission frequency of 20 MHz, used for voice transmission and a maximum transmission rate of 16 Mbps data transmission mainly used on the LAN and Token 10 BASE-T/100BASE-T.
5) five line: Cable increased Wound such density, a high-quality jacket insulation materials, transfer rate of 100 MHz, used for voice transmission and a maximum transfer rate of 10 Mbps data transmission, mainly for the 100 BASE-T and 10BASE-T network. This is the most commonly used Ethernet Cable.
6) Ultra-five line: five categories of ultra-small attenuation, crosstalk less, and has a higher attenuation and crosstalk ratio (ACR) and SNR (Structural Return Loss), a small time delay error performance greatly improved. Cat5e cablemainly for Gigabit Ethernet (1,000 Mbps).
7) cat6 cable: Cable such transmission frequency of 1 MHz to 250MHz, cat6 cablesystem in the 200 MHz integrated crosstalk attenuation ratio (PS-ACR), there should be greater cushion, it offers two times the cat5e cablebandwidth.
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