When was Siemens TIA portal release date?

What are the categories of unshielded twisted pair?

{| ! Category ! Maximum data rate ! Usual application | CAT 1 (de facto name, never a standard)Up to 1 Mbps (1 MHz) analog voice (POTS)Basic Rate Interface in ISDNDoorbell wiring CAT 2 (de facto name, never a standard) 4 Mbps Mainly used in the IBM cabling system for Token Ring networks CAT 3 16 Mbps Voice (analog most popular implementation)10BASE-T Ethernet. CAT 4 20 Mbps Used in 16 Mbps Token Ring.Otherwise not used much. Was only a standard briefly and never widely installed.CAT 5 100 MHz 100 Mbps TPDDI155 Mbps ATM.No longer supported; replaced by 5E.10/100BASE-T4/16MBps Token RingAnalog Voice CAT 5E 100 MHz 100 Mbps TPDDI155 Mbps ATMGigabit Ethernet.Offers better near-end crosstalk than CAT 5 CAT 6 Up to 250 MHz Minimum cabling for data centers in TIA-942.Quickly replacing category 5e.CAT 6E Up to 500 MHz(field-tested to 500 MHz) Support for 10 Gigabit Ethernet (10GBASE-T.) May be either shielded (STP, ScTP, S/FTP) or unshielded (UTP). This standard published in Feb. 2008.Minimum for Data Centers in ISO data center standard. CAT 7(ISO Class F) 600 MHz1.2 GHz in pairs with Siemon connector Full-motion videoTeleradiologyGovernment and manufacturing environmentsFully Shielded (S/FTP) system using non-RJ45 connectors but backwards compatible with hybrid cords.Until February 2008, the only standard (published in 2002) to support 10GBASE-T for a full 100m. or go to http://searchdatacenter.techtarget.com/sDefinition/0,,sid80_gci211752,00.html |}