Category 3, 4, 5, etc. Cable Ratings
Last updated: 2/8/2004
Q. What are the differences between Category 3,
4, 5, etc. cable ratings?
Level 1: Basic telecommunications and power
limited circuit cable.
Level 2: Up to to 1 MHz.
Category 3 (CAT3) is rated for transmission frequencies
up to 16MHz. It is typically used for voice and data transmission rates up
10 Mbps (mega bits per second). Twisted-pair (not flat) phone wire.
CAT 4: frequencies up to 20 MHz... Voice and
data transmission rates up to 16 Mbps.
CAT 5: frequencies up to 100 MHz... Voice
and data transmission rates up to 100Mbps.
CAT 5e: frequencies up to 100 MHz. CAT 5e
components have better transmission performance characteristics than CAT
5 and are most suitable for use in high-speed Gigabit Ethernets. Yes,
CAT 6 Supports transmissions up to 250 MHz.