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The ITU is the leading publisher of telecommunication technology, regulatory and standard information. Over 4500 titles in printed form and growing number on CD-ROM, DVD and online.
Telecommunication Standardization Sector (ITU-T)
The main products of ITU-T are the Recommendations. At present, more than 3000 Recommendations are in force. Recommendations are standards that define how telecommunication networks operate and interwork. ITU-T Recommendations are non-binding, however they are generally complied with due to their high quality and because they guarantee the interconnectivity of networks and enable telecommunication services to be provided on a worldwide scale. Available individually, as a collection on DVD or with a 12 month-access online subscription.
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A Organization of the work of ITU-TB Means of expression: definitions, symbols, classificationC General telecommunication statisticsD General tariff principlesE Overall network operation, telephone service, service operation and human factorsF Non-telephone telecommunication servicesG Transmission systems and media, digital systems and networksH Audiovisual and multimedia systemsI Integrated services digital networkJ Cable networks and transmission of television, sound programme and other multimedia signalsK Protection against interferenceL Construction, installation and protection of cables and other elements of outside plantM TMN and network maintenance: international transmission systems, telephone circuits, telegraphy, facsimile and leased circuits
N Maintenance: international sound programme and television transmission circuitsO Specifications of measuring equipmentP Terminals and subjective and objective assessment methodsQ Switching and signallingR Telegraph transmissionS Telegraph services terminal equipmentT Terminals for telematic servicesU Telegraph switchingV Data communication over the telephone networkX Data networks and open system communicationsY Global information infrastructure and Internet protocol aspectsZ Languages and general software aspects for telecommunication systems
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