Most Common Twisted-pair Cables
| Name | Type | Bandwidth | Applications | Notes |
| Level 1 | 0.4 MHz | Telephone and modem lines | Not described in EIA/TIA recommmendations. Unsuitable for modern systems. | |
| Level 2 | 4 MHz | Older terminal systems, e.g. IBM 3270 | Not described in EIA/TIA recommmendations. Unsuitable for modern systems. | |
| Cat3 | UTP | 16 MHz | 10BASE-T and 100BASE-T4 Ethernet | Described in EIA/TIA-568. Unsuitable for speeds above 16 Mbit/s. Now mainly for telephone cables |
| Cat4 | UTP | 20 MHz | 16 Mbit/s Token Ring | Not commonly used |
| Cat5 | UTP | 100 MHz | 100BASE-TX & 1000BASE-T Ethernet | Common in most current LANs |
| Cat5e | UTP | 100 MHz | 100BASE-TX & 1000BASE-T Ethernet | Enhanced Cat5. Same construction as Cat5, but with better testing standards. |
| Cat6 | UTP | 250 MHz | 10GBASE-T Ethernet | Most commonly installed cable in Finland according to the 2002 standard. SFS-EN 50173-1 |
| Cat6a | 500 MHz | 10GBASE-T Ethernet | ISO/IEC 11801:2002 Amendment 2. | |
| Class F | S/FTP | 600 MHz | Telephone, CCTV, 1000BASE-TX in the same cable. 10GBASE-T Ethernet. | Four pairs, S/FTP (shielded pairs, braid-screened cable). Development complete - ISO/IEC 11801 2nd Ed. |
| Class Fa | 1000 MHz | Telephone, CATV, 1000BASE-TX in the same cable. 10GBASE-T Ethernet. | Four pairs, S/FTP (shielded pairs, braid-screened cable). Development complete - ISO/IEC 11801 2nd Ed. Am. 2. |
Read more about this topic: Twisted Pair
Famous quotes containing the words common and/or cables:
“The propensity to truck, barter and exchange one thing for another ... is common to all men, and to be found in no other race of animals.”
—Adam Smith (1723–1790)
“It is not a piece of fine feminine Spitalfields silk—but is of the horrible texture of a fabric that should be woven of ships’ cables & hausers. A Polar wind blows through it, & birds of prey hover over it. Warn all gentle fastidious people from so much as peeping into the book—on risk of a lumbago & sciatics.”
—Herman Melville (1819–1891)