Cabletron Systems 42 ユーザーズマニュアル
Cable Specifications
Page 2-3
•
Where practical, dedicated cable should be used for Token Ring
signals.
signals.
•
Work area wall plates and outlets used for the Token Ring network
should be clearly labeled as Token Ring network lobe connections.
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.
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
(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
, 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.
classified as category 3, 4, and 5.
UTP cable is categorized according to the following specifications: