电讯业的全球化是TL9000标准产生的主要原因。二十世纪下半叶是电讯业飞速发展的一个时代，随着电讯业全球化的快速推进，电讯业存在着众多的质量体系要求。重复的要求和审核不但容易引起混淆，而且提高了供应商的商业成本。 1996年春，以贝尔公司为首的一些电讯业知名服务提供商提出要制定一个统一的质量体系标准，并于1997年10月成立了QUEST论坛。QUEST论坛是一个电讯业的服务提供商和产品制造商之间合作和沟通的世界论坛，其目的是统一所有电讯的质量体系标准，在现有标准和实践的基础上制定和保持一个通用的电讯业质量体系管理标准TL9000。

GlobaIization of the telecommunications industry is one of the forces driving the need to apply a common set of quality requi rements th roughout the supply chain．The later 20th Century is an era for telecommunications industry to develop rapidly．Overlapping standads and audits a re confuslng and a re escalating the cost of doing business on a globaI scale to unacceotabIe levels． In the spring of 1996，a group of leading telecommunications service providers headed by Bell initiated an effort to establish a consistent set of quality system requirements，and then in October 1997，The Quality Excellence for Suppliers of Telecommunications Leadership (QUEST) Forum was formed.The QUEST Forum has become a worldwide forum for cooperation and cornmunication between telecommunication se rvice providers and suppliers．The QUEST Forum is responsible for maintaining compatibility with other sets of requirements and standards and its members sit on cornmittees sponsored by standard setting organizations。 As the first British Certification Company acquired by QUEST and RAB，NQA always dedicate to help and find excellent supplie rs for telecommunications service．