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100base-tx cable, 100base-tx connector pinouts, Straight-through cable crossover cable – Allied Telesis AT-FS704 User Manual

Page 31: 100base-tx cable 100base-tx connector pinouts

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AT-FS704 Installation Guide

15

100Base-TX Cable

There are various grades of voice-quality and data-quality cables available.
These can appear to be similar externally, although their high-speed data
transmission characteristics are radically different. The identification problem
is made worse by some suppliers selling voice-quality cables as data-quality
cables.

If voice-quality cables are used in a 100Base-TX network system, data
movement may be slow, collision-prone or non-existent. In addition, interface
LEDs will usually indicate a valid link in such cases.

Category 5 cabling is required for 100Base-TX connections. Using any other
category for a 100Base-TX connection may result in high error rates, or may
not have the capacity to transmit data.

100Base-TX Connector Pinouts

Straight-through Cable

Crossover Cable

4#7;.

7;.#4

5;0#9

9#5;0

7;0#5

6#5;.

5;.#6

5#7;0

4#7;.

7;.#4

5;0#9

9#5;0

7;0#5

6#5;.

5;.#6

5#7;0