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Cat Cables
| Category | Maximum data rate | Usual application |
| CAT 1 | Up to 1 Mbps | Basic Rate Interface in
ISDN Doorbell wiring |
| CAT 2 | 4 Mbps | Mainly used in the IBM
Cabling System for networks |
| CAT 3 | 16 Mbps | Voice and data on 10BASE-T
Ethernet |
| CAT 4 | 20 Mbps | Used in 16 Mbps Token Ring /
Otherwise not used much |
| CAT 5 | 100 Mbps /
1000 Mbps (4 pair) | 100 Mbps TPDDI
155 Mbps ATM
No longer supported;
replaced by 5E |
| CAT 5E | 1000 Mbps
(10000 Mbps prototype) | 100 Mbps TPDDI
155 Mbps ATM
Gigabit Ethernet
Offers better near-
end crosstalk than CAT 5 |
| CAT 6 | Up to 400 MHz | Super-fast broadband applications
Most popular cabling for new installs
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| CAT 6E | Up to 625 MHz
(field-tested to 500 MHz) | Support for 10 Gigabit
Ethernet (10GBASE-T) |
CAT 7
(ISO Class F) | 600-700 MHz
1.2 GHz in pairs
with Siemon connector | Full-motion video
Teleradiology
Government and manufacturing
environments
Shielded system |
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