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Technical Specifications

Recommended Cables and Cable Specifications

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.

Table 3 provides an overview of IEEE 802.3 and 802.3u cabling specifications

for 10Base-T and 100Base-TX network configurations using twisted-pair cable.

Table 3

IEEE 802.3 and 802.3u Cabling Specifications

1. Cabling must be in accordance with the TIA/EIA 568A standards.

10Base-T 100Base-T

Media Unshielded or Shielded Twisted

Pair Category 3 or better

Unshielded or Shielded Twisted

Pair Category 5 or better

Maximum Segment

Length

100 m (328 ft) 100 m (328 ft)

Topology Star, Tree Star, Tree

External Devices Network Adapter Card, Repeater,

Switch, or Router

Network Adapter Card,

Repeater, Switch, or Router

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