Understanding the network.pdf - Back to Home

data communication cabling system components. These components include the
following:
• Horizontal and backbone copper or fiber optic transmission cable interface
connectors for copper or fiber optic cabling
• Data center and wiring closet path panels and end-node wall jacks
• Path panel and end-node copper or fiber optic patch cables
Horizontal cabling, as defined by the TIA/EIA, is the cable that connects the
end-node to the telecommunications/data equipment distribution closet. Backbone
cabling is cable used to connect telecommunications/data equipment installed in
distribution closets. Both the horizontal and backbone cabling standards use the
same media types. The specific differences have to do with the permissible cable
lengths. Table 4.1 contains TIA/EIA standards for copper horizontal and backbone
cabling.
Table 4.1. TIA/EIA Standards for Copper Horizontal and Backbone
Cabling
Medium Use Supportable
Bandwidth
Distance Connector
50-ohm thick 10Base-5 500Mhz 500M N-Series
coaxial
backbone cabling
Single mode
fiber 10/125
micron [*]
Long distance 27GHz 40km to 5000km ST/SC/FDDI
data links up to
MIC
1,000Mbps
higher
and
Multimode fiber Short distance 160 to 2,000M SC/ST/FDDI-
62.5/125 micron datalinks up to 500MHz
MIC
1,000Mbps
Category 1 Voice anddata up .25MHz Non-specified RJ-11
22/24 AWG UTP to 56KBps
Category 2 Voice and data up 1MHz Non-specified RJ-11
22/24 AWG UTP to 1Mbps
Category 3 24 Voice and data up 16MHz Horizontal length RJ-45
AWG 100-ohm to 10Mbps
90M, 10m for patch
UTP
cabling, backbone
length 800m
Category 4 AWG Voice and data up 20MHz Horizontal length RJ-45
100-ohm UTP to 20Mbps
90M,10m for patch