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 (www.questforum.org)
- 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 www.tl9000.org.
