Commscope Drop Cable User Manual download pdf (Page 46)

Connectorizing UTP and Telephone Cable

These instructions refer to general practices. Exact instructions may vary with the maker of the tools and connec-

tors you are using. Always refer to the manufacturer’s specifications.

UTP - the Twist is Important

Twisted pair cable twins its pairs together in a very precise lay, or frequency of twist. This lay provides a shielding

effect that permits high-speed data signals to travel reasonably long distances with minimum interference. Main-

taining that twist is essential to top performance, especially at the connector.

The majority of UTP data connectors are of the Insulation Displacement Connector (IDC) type in an RJ45 size

(eight wire). As the wires are crimped into place, the insulation is automatically stripped away to permit clean con-

ductor contact. Other proprietary tools and methods exist; consult your connector maker.

Use a ring tool to remove about 3 in (7.5 cm) of jacketing. Electrician’s snips can be used as long as you are

careful not to nick or cut the insulation. This should expose four twisted pairs color-coded as pair 1/blue, pair

2/orange, pair 3/green and pair 4/brown. When preparing the conductors for connectorization, do

not untwist any more than 1/2 in (1.3 cm) of the pair.

The two most popular UTP wiring schemes

are TIA 568A and TIA 568B. It doesn’t mat-

ter which you choose as long as you are

consistent throughout the installation. Place

the conductors in the appropriate slots in

the jack or the outlet (striped conductors in

the odd slots, solid in the even) and crimp

them into place with the appropriate crimp-

ing tool.

Phone Wire

Follow the same rules as UTP; instead use a standard 4-wire RJ11 jack. The color of the conductors going across

are 1/yellow, 2/green, 3/red and 4/black.

9.11 Residential Interior Cabling

Connectorization

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Commscope Drop Cable User Manual Page 46