Avocent 1024 User Manual

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60        DSR1024 Switch Installer/User Guide
Appendix D: UTP Cabling
The following information is intended to brief you on various aspects of connection media. The 
performance of a DSR1024 switching system depends on high quality connections. Poor quality or 
poorly installed or maintained cabling can diminish DSR system performance.
NOTE: This appendix is for information purposes only. Please consult with your local code officials and cabling 
consultants prior to any installation.
DSR1024 switching systems use UTP cabling.
UTP copper cabling
The three types of UTP cabling that the DSR switch supports are as follows:
CAT 5 UTP (4-pair) high performance cable consists of twisted pair conductors used primarily 
for data transmission. The twisting of the pairs gives this cable some immunity from the 
infiltration of unwanted interference. CAT 5 cable is generally used for networks running at 10 
or 100 Mbps.
CAT 5E (enhanced) cable has the same characteristics as CAT 5, but is manufactured to 
somewhat more stringent standards. 
CAT 6 cable is manufactured to tighter requirements than CAT 5E cable. CAT 6 has higher 
measured frequency ranges and significantly better performance requirements than CAT 5E 
cable at the same frequencies.
Wiring standards
The 8-conductor (4-pair) RJ-45 terminated UTP cable: EIA/TIA 568A and B has two supported 
wiring standards. These standards apply to installations using CAT 5, 5E and 6 cable specifications. 
The DSR1024 switching system supports either of these wiring standards. Table D.1 details these 
wiring standards.
Table D.1: UTP Wiring Standards  
Pin
EIA/TIA 568A
EIA/TIA 568B
1
white/green
white/orange
2
green
orange
3
white/orange
white/green
4
blue
blue
5
white/blue
white/blue
6
orange
green