Category 3 cable

related topics
{system, computer, user}
{specie, animal, plant}
{school, student, university}

Category 3 cable, commonly known as Cat 3, is an unshielded twisted pair (UTP) cable designed to reliably carry data up to 10 Mbit/s, with a possible bandwidth of 16 MHz. It is part of a family of copper cabling standards defined jointly by the Electronic Industries Alliance and the Telecommunications Industry Association.

Category 3 was a popular cabling format among computer network administrators in the early 1990s, but fell out of popularity in favor of the very similar, but higher performing, Category 5 cable standard. Since the early 2000s most new structured cable installations are built with Cat 5e or Cat 6 cable.

Cat 3 is currently still in use in two-line telephone systems. It may be used for token ring networks, or 10BASE-T Ethernet. The seldom used 100BASE-T4 standard, which achieves speeds of 100 Mbit/s by using all 4 pairs of wires, allowed older Cat 3 based infrastructures to achieve a much higher bandwidth. Cat 3 is compatible with Power over Ethernet.

Note that unlike Cat 1, 2, 4, and 5 cables, Cat 3 is still recognized by TIA/EIA-568-B, its defining standard.

Further reading

References

Full article ▸

related documents
B8ZS
BOS/360
16-bit
Vertical blank interrupt
Internet Relay Chat channel operator
Undernet
Horizontal blank interrupt
Undocumented feature
Serial Line Internet Protocol
Communications in South Africa
Uploading and downloading
A3D
Off-hook
Back Orifice
3ivx
Automated business process
Star coupler
Network architecture
Signal compression
Automated information systems security
Microassembler
Communications in Ethiopia
Call collision
Proxy ARP
Handshaking
PC-FX
Delay encoding
Netscape Communicator
Raster image processor
National Information Infrastructure