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IntraCore IC3624PWR Layer 2 PoE Switch with Dual Gigabit
White/Orange Stripe
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White/Green Stripe
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EIA/TIA 568B RJ-45 Wiring Standard
10/100BASE-TX Crossover Cable
End A
End B
C.2 Pin Assignments for 1000BaseT Pin
All 1000BaseT ports support automatic MDI/MDI-X operation, so you can use straight-through cables for all network
connections to PCs or servers, or to other switches or hubs.
The table below shows the 1000BaseT MDI and MDI-X port pinouts. These ports require that all four pairs of wires be
connected. Note that for 1000BaseT operation, all four pairs of wires are used for both transmit and receive.
Use 100-ohm Category 5, 5e or 6 unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable for 1000BaseT
connections. The length of any twisted-pair connection must not exceed 100 meters (328 feet).
Pin MDI Signal Name MDI-X Signal Name
1 Bi-directional Data One Plus (BI_D1+) Bi-directional Data Two Plus (BI_D2+)
2 Bi-directional Data One Minus (BI_D1-) Bi-directional Data Two Minus (BI_D2-)
3 Bi-directional Data Two Plus (BI_D2+) Bi-directional Data One Plus (BI_D1+)
4 Bi-directional Data Three Plus (BI_D3+) Bi-directional Data Four Plus (BI_D4+)
5 Bi-directional Data Three Minus (BI_D3-) Bi-directional Data Four Minus (BI_D4-)
6 Bi-directional Data Two Minus (BI_D2-) Bi-directional Data One Minus (BI_D1-)
7 Bi-directional Data Four Plus (BI_D4+) Bi-directional Data Three Plus (BI_D3+)
8 Bi-directional Data Four Minus (BI_D4-) Bi-directional Data Three Minus (BI_D3-)
C.3 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 specifications are contained in the ANSI/TIA/EIA-TSB-67 standard. Cables must pass test
parameters for Return Loss and Equal-Level Far-End Crosstalk (ELFEXT). These tests are contained in the
ANSI/TIA/EIA-TSB-95 Bulletin, “The Additional Transmission Performance Guidelines for 100 Ohm 4-Pair Category 5
Cabling.”
Note:
When testing the cable installation, be sure to include all patch cables between switches and end devices.