Allied Telesis AT-FH708E Guide d'installation télécharger pdf (Page 21)

AT-FH708E Hub 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 is required cabling for use with 100Base-TX connections.

Using any other category for a 100Base-TX connection may have high

error rates and may not have the capacity to transmit data.

100Base-TX Connector Pinouts

Straight-through Cable

Crossover Cable

4#7;. 7;.#4

5;0#99#5;0

7;0#5

6#5;. 5;.#6

5#7;0

4#7;. 7;.#4

5;0#99#5;0

7;0#5

6#5;. 5;.#6

5#7;0

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