IBM 5500-01E, Operational, Installation, And Maintenance Manual

Page: 136 / 192

Chapter 6: Twinax Client Cabling Requirements and Problem Solving
136 Planning, Installation, and Maintenance Guide
Figure 73: Configuration for the EIA/TIA 568 B Standard
For 2-pair or 3-pair RJ11 connections, the USOC standard is commonly used.
The configuration for this standard is shown in Figure 74:
Figure 74: Configuration for the USOC Standard
Important: When terminating UTP wire with RJ connectors, use the correct
type of plug for the type of wire that you are using. Although most RJ plugs
appear to be similar, there are several major types:
• Solid wire, round cable
• Solid wire, flat oval cable
RJ plugs crimp the copper wire and provide strain relief to the cable:
Crimping
Using the incorrect plug results in unreliable connections. For solid wire
installation, RJ plugs straddle the copper wire when crimped.
Strain relief
To provide strain relief to the cable, the RJ plug opening must match the cable
type (round or flat oval). For all UTP cable, use a flat oval plug. Solid wire is
used for almost all UTP cable that is used in long point-to-point runs (for
HEX1I020
PAIR 3
PAIR 4 PAIR 2 PAIR 1
1 2 3 4 5 6 7 8
PIN 1: White with Orange Stripe
PIN 2: Orange with White Stripe
PIN 3: White with Green Stripe
PIN 4: Blue with White Stripe
PIN 5: White with Blue Stripe
PIN 6: Green with White Stripe
PIN 7: White with Brown Stripe
PIN 8: Brown with White Stripe EIA - 568 B COLOR CODE
RJ45 Jack
PIN 1: Not Used or White with Green Stripe
PIN 2: White with Oange Stripe
PIN 3: Blue with White Stripe
PIN 4: White with Blue Stripe
PIN 5: Orange with White Stripe
PIN 6: Not Used or Green with White Stripe USOC COLOR CODE
RJ11 Jack
PAIR 1
PAIR 2
PAIR 3
1 2 3 4 5 6
HEX1I021