Telecommunications Standards

A list of the telecommunications quality standards follows this summary information.

  • TL 9000 was built upon the ISO 9001 quality standard
  • Quality management system handbooks: Requirements and Measurements
  • Requirements: hardware, software, services, common
  • Measurements: performance measures and quality indicators
  • Issued by QuEST Leadership Forum (
  • Mandatory use of measurements for TL 9000 certification
  • TL 9000 Requirements Handbook R5.0 was based on ISO 9001:2008
  • TL 9000 Requirements Handbook R6.0 is based on ISO 9001:2015
TL 9000-R:2016 TL 9000 Requirements Handbook – Release 6.0
TL 9000-R:2017 TL 9000 Requirements Handbook – Release 6.1
TL 9000-M:2017 TL 9000 Measurements Handbook – Release 5.5

Handbooks are available from the QuEST web site

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