Product specifications

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6-Position 4 Contact (RJ-11)
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6-Position 6 Contact (MMJ)
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8-Position 8 Contact (RJ-45)
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8-Position 8 Contact Keyed (RJ-45)
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Types of Modular Jacks
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
T568A T568B USOC
Pair 1
Pair 2
Pair 3
Pair 4
T568A, T568B and USOC Wiring
Straight-Pinned and Crossover Cable
Straight-pinned cable has the most
common type of pinning. The send
and receive pairs are wired straight
through on either end of the cable.
Crossover cable is generally used
for peer-to-peer connections. The
send and receive pairs are crossed
between Connector A to Connector
B on either end of the cable.
T568A and T568B Crossover
Cable
Connector
(A)
Connector
(B)
1—3
2—6
3—1
4—2
5—4
6—5
7—8
8—7
USOC Crossover
Cable
Connector
(A)
Connector
(B)
1—8
2—7
3—6
4—5
5—4
6—3
7—2
8—1
CAT5 CAT5e CAT6 CAT6a CAT7
Frequency 100 MHz 100 MHz 250 MHz 500 MHz 600 MHz
Attenuation (Min. at 100 MHz) 22.0 dB 22.0 dB 19.8 dB 20.8 dB
Characteristic Impedance 100 ohms ± 15% 100 ohms ± 15% 100 ohms ± 15% 100 ohms ± 15%
NEXT (Min. at 100 MHz) 32.3 dB 35.3 dB 44.3 dB 27.9 dB 60.7 dB
PS-NEXT (Min. at 100 MHz 32.3 dB 42.3 dB 57.7 dB
EL-FEXT (Min. at 100 MHz 23.8 dB 27.8 dB 9.3 dB 38.4 dB
PS-ELFEXT (Min. at 100 MHz) 20.8 dB 24.8 dB 35.4 dB
PS-ANEXT (Min. at 500 MHz 49.5 dB
PS-AELFEXT (Min. at 500 MHa) 16.0 dB 20.1 dB 20.1 dB 23.0 dB 14.1 dB
Return Loss (Min. at 100 MHz) 16.0 dB 20.1 dB 20.1 dB 8.0 dB 17.3 dB
Delay Skew (Max. per 100 m) 45 ns 45 ns 20 ns
Networks Supported 100BASE-TX 1000BASE-T 1000BASE-T 10GBASE-T 10GBASE-T
Balanced Twisted-Pair Cable Specifications
NOTE: The ISO currently has Class F (Category 7a) requirements under development. They are based on Class F requirements and the Catagory 7 non-RJ style plug. They specify a bandwidth of 600 to 1000 MHz.