Category connector speed frequency description phone

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Category Connector Speed Frequency Description Phone cable RJ-11 10 Mbps N/A Used to connect a modem to a phone jack in a wall outlet to establish a dial-up Internet connection Has two pairs of twisted cable (a total of 4 wires). Cat 3 RJ-45 10 Mbps 16 MHz Designed for use with 10 megabit Ethernet or 16 megabit token ring. Cat 5 100 Mbps 100 MHz Supports up to 100 Mbps Ethernet. Cat 5e 1000 Mbps 100 MHz Similar to Cat 5 but provides better EMI protection. Supports gigabit Ethernet (gigabit connections require the use of all four twisted pairs) Cat 6 10 Gbps 250 MHz 10 Gbps speeds are limited to cable lengths less than 55 meters. Cat 6a 10 Gbps 500 MHz 10 Gbps speeds are limited to cable lengths less than 100 meters. Provides additional shielding and tighter cable twists than standard Cat 6, which reduces (alien) crosstalk and makes it less susceptible to EMI. Cat 7 10 Gbps 600 MHz Has the strictest specifications for crosstalk and noise. The table below describes the two types of connectors used with twisted pair cables. Connector Description RJ-11 Has 4 connectors Supports up to 2 pairs of wires Uses a locking tab to keep a connector secure in an outlet Used primarily for telephone wiring RJ-45 Has 8 connectors
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Supports up to 4 pairs of wires Uses a locking tab to keep aconnector secure in an outlet Used for Ethernet networks Always use a special crimping tool to attach connectors to UTP cable. Keep the following in mind when working with twisted pair cables: Even though different cable categories may look physically similar, they are electrically different. Higher cable categories use different wire gauges and have more wire twists per inch than lower cable categories, which allows for much faster transmission speeds. Some cables use plenum plastic as an insulator. Plenum wires are fire resistant and non-toxic when burned. These types of cables are rated to be run in the plenum (the space above a ceiling or below a floor) or a building. Each type of UTP cable can be substituted for any category below it, but never for a category above. For example, Cat 6 can be substituted for a task requiring Cat 5e; however, neither Cat 5 nor Cat 3 should be used for this particular task. Twisted pair cables remain one of the primary ways that computers connect to a network. The table below illustrates both patch (also called straight through ) and crossover cable configurations. Cable Description Patch Computers connect to the network through a hub or switch with a patch cable. Patch cables use the same wire configuration on each connector end. The following are the two most commonly used wiring configurations: T568A Wires are arranged from pins 1 to 8 in each connector in the following order: GW, G, OW, B, BW, O, BrW, Br.
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