TL 9000 was designed specifically for the telecommunications industry. It is based around ISO 9001 and was developed by the Quality Excellence for Suppliers of Telecommunications (QuEST) Leadership Forum in response to product and service failures within the industry.
Representatives from major stakeholders decided that only by defining specific quality needs and setting clear goals and objectives could the telecommunications industry promote a culture for continual improvement.
TL 9000 defines the telecommunications quality system requirements for the design, development, production, delivery, installation, and maintenance of products and services. This includes performance and cost-based measurements that measure reliability and quality performance.
TL 9000 is only relevant to organizations currently engaging in work within the telecommunications industry and wants to implement a certified management system with international recognition.