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UTP - Unshielded Twisted Pair
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| 2 |
STP - Shielded Twisted Pair
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| 3 |
EIA-568 (Electronic Industries Association) - standard which specifies the use of voice-grade UTP as well as STP for in-building data applications (year 1991); The twisting prevents interference problem; wiring up to 16Mbps
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| 4 |
EIA-568A - new standard which covers 150-ohm STP and 100-ohm UTP (year 1995).
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category 1: telephone cable, not suited for data
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category 2: data transmission up tp 4 MBPS
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category 3: transmission characteristics are specified up to16 MHz; data rates up to 16Mbps; four twists per foot;max recommended distance: 90m
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category 4: transmission characteristics are specified up to 20 MHz; not popular
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category 5: transmission characteristics are specified up to 100 MHz; data rates up to 100Mbps; four twists per inch;better performance; more expensive;max recommended distance: 90m
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STP: transmissions at speed 300 MBPS; max distance 90m
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