TL 9000 Quality Management System Requirements & Measurement Handbooks
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TL 9000 Quality Management System Requirements & Measurement Handbooks
The purpose of TL 9000 is to define the telecommunications quality system requirements for the design, development, production, delivery, installation, and maintenance of products and services. Included in TL 9000 are performance and cost-based metrics that measure reliability and quality performance of the products and services.” (QuEST Forum)