SMC Networks SMCGS24-Smart - 1000 BASE-T Cable Requirements; Cable Testing for Existing Category 5 Cable

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1000BASE-T Cable Requirements
All Category 5 UTP cables that are used for 100BASE-TX connections
should also work for 1000BASE-T, providing that all four wire pairs are
connected. However, it is recommended that for all critical connections, or
any new cable installations, 4-pair Category 5e (enhanced Category 5) cable
should be used. The Category 5e specifications include test parameters
that are only recommendations for Category 5. Therefore, the first step in
preparing existing Category 5 cabling for running 1000BASE-T is a simple
test of the cable installation to be sure that it complies with the IEEE
802.3ab standards.
Cable Testing for Existing Category 5 Cable
Installed Category 5 cabling must pass tests for Attenuation, Near-End
Crosstalk (NEXT), and Far-End Crosstalk (FEXT). This cable testing
information is specified in the ANSI/TIA/EIA-TSB-67 standard.
Additionally, cables must also pass test parameters for Return Loss and
Equal-Level Far-End Crosstalk (ELFEXT). These tests are specified in the
ANSI/TIA/EIA-TSB-95 Bulletin, “The Additional Transmission
Performance Guidelines for 100 Ohm 4-Pair Category 5 Cabling.”
Pin MDI-X MDI
1
Bi-directional Data Two Plus (BI_D2+) Bi-directional Data One Plus (BI_D1+)
2
Bi-directional Data Two Minus (BI_D2-) Bi-directional Data One Minus (BI_D1-)
3
Bi-directional Data One Plus (BI_D1+) Bi-directional Data Two Plus (BI_D2+)
4
Bi-directional Data Four Plus (BI_D4+)
Bi-directional Data Three Plus (BI_D3+)
5
Bi-directional Data Four Minus (BI_D4-) Bi-directional Data Three Minus (BI_D3-)
6
Bi-directional Data One Minus ( BI_D1-)
Bi-directional Data Two Minus (BI_D2-)
7
Bi-directional Data Three Plus (BI_D3+) Bi-directional Data Four Plus (BI_D4+)
8
Bi-directional Data Three Minus (BI_D3-) Bi-directional Data Four Minus (BI_D4-)