Cabletron Systems STH-24 User's Guide download pdf (Page 18)

Cable Specifications

Page 2-3

• Where practical, dedicated cable should be used for Token Ring

signals.

• Work area wall plates and outlets used for the Token Ring network

should be clearly labeled as Token Ring network lobe connections.

2.2 Cable Specifications

Take care in planning and preparing the cabling and connections for the

network. The susceptibility of the LAN’s cables to crosstalk and noise

determines the network’s error rate, and thus, the reliability of data

propagation on the network. The quality of the connections, the length of

cables and other conditions of the installation are critical factors in

determining the reliability of the network.

2.3 UTP Cabling Specifications

Both UTP supporting modules (STH-22 / 24) support D-inside wiring

(DIW) voice grade Unshielded Twisted Pair (UTP) cable as described

below and in

EIA SP-1907B

. All category 5, all category 4, and

some

(see

Section 2.3.2,

UTP Lobe Lengths

, on page 5) category 3 UTP cables

meet Token Ring network performance requirements.

2.3.1 UTP Cable Categories

Both UTP concentrator modules (STH-22 / 24) support UTP cables

classiﬁed as category 3, 4, and 5.

UTP cable is categorized according to the following speciﬁcations:

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Cabletron Systems STH-24 User's Guide Page 18