About The Wiring Closet; Utp Phone Wire; Patch Cables - Black Box 10BASE-T Manual

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10BASE-T EXTENDER

Figure 3-4. RJ-45 crimping tool.

3.2 About the Wiring Closet

A 10BASE-T Extender is typically installed in a wiring closet, making it possible to

connect the phone wires carrying network traffic to the repeater using short patch

cables.

The 10BASE-T Extender is intended for use with 100Ω unshielded twisted pair

telephone wire (UTP) already installed in and between buildings. Buildings,

individual floors and wings of a building are often interconnected with 25-pair,

50-pair, or 100-pair level 2 UTP cables. At least one pair in these cables is usually

available for long distance LAN connections.

A patch cable connects each phone-wire pair to a 10BASE-T Extender port. Each

patch cable extends from the Extender port to the phone punchdown block or

patch panel containing the phone-wire connection. You must make your own

patch cables for an installation. They are not included with your Extender. Call

Technical Support for more information about patch cables. When making patch

cables to connect patch panels to repeaters, use pins 3 and 6 of the RJ-45

connectors by joining one wire to pin 3 on both plugs and the other to pin 6 on

both plugs with a crimping tool (see straight-through cabling in Figure 3-5). If

making patch cords for connecting the repeaters directly to the punchdown

blocks, make sure that the wire used is compatible with the punchdown block.

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