TL 9000 TL 9000 TL 9000 is a quality management practice designed by the QuEST Forum in 1998. It was created to focus on supply chain directives throughout the international telecommunications industry, including the USA. As with ISO/TS 16949 for the automotive industry and AS9000 for the aerospace industry, TL 9000 specializes the generic ISO 9001 to meet the needs of one industrial sector, which for TL 9000 is the information and communications technology (ICT)—extending from service providers through ICT equipment manufacturers through the suppliers and contractors and subcontractors that provide electronic components and software components to those ICT equipment manufacturers. TL
ISO 31 ISO 31 ISO 31 (Quantities and units, International Organization for Standardization, 1992) is a deprecated international standard for the use of physical quantities and units of measurement, and formulas involving them, in scientific and educational documents. It is superseded by ISO/IEC 80000. The standard comes in 14 parts: A second international standard on quantities and units was IEC 60027 . The ISO 31 and IEC 60027 Standards were revised by the two standardization organizations in collaboration (, ) to integrate both standards into a joint standard "ISO/IEC 80000 - Quantities and Units" in which the quantities and equations used with