In 1998 QuEST Forum developed the TL 9000 quality management system (QMS) to meet the supply chain quality requirements of the global communications industry. Built on ISO 9001 and the eight quality principles, TL 9000 is designed specifically for the communications industry.

The purpose of TL 9000 is to define the unique communications quality system requirements for design, development, production, delivery, and service. In addition, it specifies measurements for companies to help evaluate the effectiveness of quality implementation and improvement programs.

TL 9000: Our Value Proposition

Measurements Handbook Release 4.5
The effective date for the R4.5 Measurements Handbook is 31 December 2010.


TL 9000 Jump Start Program
Succeed in implementing and certifying your TL 9000 registration with the assistance of a subject matter expert.


Requirements Handbook Release 5.0
The effective date for the R5.0 Requirements Handbook is 15 November 2009.