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
