OTE is among the five largest listed companies, with respect to capitalization, in the Athens Stock Exchange and also trades on New York (NYSE) and London (LSE) Stock Exchanges.

The global website of the Japanese mobile operator NTT DOCOMO, including press releases and updated corporate information.

Mobile phones, mobile broadband and home broadband in the Orange Shop. Plus the latest news, entertainment, sport and lifestyle content from Orange.

O2 is the UK's leading provider of mobile phones and broadband, offering the best mobile phone, sim only, and broadband deals. Save money by buying direct!

Global website with links to local operating companies, partner networks, financial data, investor and media relations, corporate responsibility, global enterprise, sponsorship, foundation, and careers.

AT&T is a leader in telecommunication services, including cell phones, wireless, U-verse, digital TV, high speed internet, DSL, home phone, and bundled services.

中国通信标准化协会 (英文译名为：China Communications Standards Association，缩写为：CCSA)于2002年12月18日在北京正式成立。该协会是国内企、事业单位自愿联合组织起来，经业务主管部门批准，国家社团登记管理机关登记，开展通信技术领域标准化活动的非营利性法人社会团体。

Red Hat is the world's leading open source technology solutions provider with offerings including Red Hat Enterprise Linux, open source applications, security and systems management, virtualization, Services Oriented Architecture (SOA) solutions.

Comprehensive information and resources about the Linux Operating System.

Linux伊甸园是最大的中文开源资讯门户网站，拥有全方位的开源资讯，论坛，下载，博客，技术支持和解决方案。