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The six categories of transmission performance specified for cables, connecting hardware and links are*:
Category Transmission characteristics

Description

3

Transmission characteristics are specified up to 16Mhz

Meets applicable category 3 and class C requirements of ISO/IEC 11801 (including amendments A.I & A.2) , ANSI/TIA/EIA-568-A (including addenda A-1 , A-2 & A-3) and TSB67. Requirements are specified to an upper frequency limit of 16 MHz.

4

Transmission characteristics are specified up to 20Mhz

Meets applicable category 4 requirements of ISO/IEC 11801 (including amendments A.I & A.2) , ANSI/TIA/EIA-568-A (including addenda A-1, A-2 & A-3) and TSB67. Requirements are specified to an upper frequency limit of 20 MHz. This classification is a superset of 3

5

Transmission characteristics are specified up to 100Mhz

Meets applicable category 3 and class D requirements of ISO/IE 11801 (including amendments A.I & A.2) , ANSI/TIA/EIA-568-A (including addenda A-1, A-2 & A-3) and TSB67. and draft TSB95 Requirements are specified to an upper frequency limit of 100 MHz. This classification is a superset of 4

5e

Transmission characteristics
are specified up to 100Mhz

Performs to category 5e and class D requirements draft amendment 3 of  ISO/IE 11801 , and draft addendum 5 to, ANSI/TIA/EIA-568-A Requirements are specified to an upper frequency limit of 100 MHz. This classification is a
superset of 5

6

Transmission characteristics are specified up to 250Mhz

Performs to category 6* and class E requirements under development by ISO/IE and TIA. Requirements are expected to be specified to an upper frequency limit of at least 250 MHz. This classification is a superset of 5e

7

Transmission characteristics are specified up to 600Mhz

Performs to category 7* and class F requirements under development
by ISO/TEC. Requirements are expected to be specified to an upper frequency limit of at least 600 MHz. This classification is an electrical superset of 6




 
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