Infrastructure and components. Cable. The cable and components used in structured cabling systems is defined in the standards EIA/TIA 568 x There are a number of different levels of cables and components known as Catagories ISO 11801
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Specified in TIA/EIA 568 X (i.e. In various 568 standards)
Cat 1: Previously used for POTS telephone communications, ISDN and doorbell wiring.
Cat 2: Previously was frequently used on 4 Mbit/s token ring networks.
Cat 3: used for data networks using frequencies up to 16 MHz. Historically popular for 10 Mbit/s Ethernet networks.
Cat 4: Provided performance of up to 20 MHz, and was frequently used on 16 Mbit/s token ring networks.
Cat 5: Provided performance of up to 100 MHz, and was frequently used on 100 Mbit/s Ethernet networks. May be unsuitable for 1000BASE-T gigabit ethernet.
Cat 5e: Provides performance of up to 100 MHz, and is frequently used for both 100 Mbit/s and Gigabit Ethernet networks.
Cat 6: Provides performance of up to 250 MHz, more than double category 5 and 5e.
Cat 6a: Provides performance of up to 500 MHz, double that of category 6. Suitable for 10GBase-T.
25 pair cable
Comparing an IDC connection (LH) with a crimped connection (RH)