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The connection of individual wires of a UTP cable to the pins of an IEEE 802.5
compliant RJ45 connector are given in Table 9-5.
Fiber Optics
Straight-Tip
Fiber optic connectors in Token Ring environments must meet the IEEE 802.5j
specifications, which requires the use of Straight-Tip (ST) connectors for any fiber
optic cabling strand. The ST connector is a locking, keyed connector. The ST
connector may either be male or female. Male ST connectors are typically attached
to cable strand ends, while the female ST connectors are usually found on
networking and cable management hardware.
Connector Types
Table 9-5. IEEE 802.5 RJ45 Pinout for UTP
IEEE 802.5
Wire Color
White/Orange
TX -
Blue
RX +
White/Blue
RX -
Orange
TX +
Side Elev.
Solid Glass
Center
Keyed
Connector
Figure 9-10. ST Connectors
RJ45 Pinout
Signal
3
4
5
6
Front Elev.
Hollow Center
Channel
P
Cladding
Key Guide
Channel
Token Ring Media
Locking Key
1845n20
9-17
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