http://www.itu.int/pub/T-HDB en Tue, 07 May 2013 15:18:56 GMT tsbedh@itu.int webmaster@itu.int Publications http://www.itu.int/res/templates/v1.0/images/logo_ituw.gif http://www.itu.int/pub/T-HDB http://www.itu.int/pub/T-HDB-QOS.01-2004 The QoS Handbook sets out to specify network service quality parameters that enable services to be offered to customers/users in order to satisfy customers'/users' quality of service expectations. These parameters relate to both implementation and ongoing use of the service. Service quality is also related to all aspects of network assessment and management of the network.]]> Thu, 21 Jun 2012 13:48:37 GMT T-HDB-QOS.01-2004 http://www.itu.int/pub/T-HDB-SEC.05-2011 The purpose of the ITU-T Manual on Security in Telecommunications and Information Technology is to provide a broad introduction to the security work of ITU-T. It is directed towards those who have responsibility for, or an interest in, information and communications security and the related standards, and those who simply need to gain a better understanding of ICT security issues and the corresponding ITU-T Recommendations.]]> Tue, 27 Mar 2012 17:45:14 GMT T-HDB-SEC.05-2011 http://www.itu.int/pub/T-HDB-PLN.03-2012 This ITU-T handbook reviews the work to date on future networks. The development of future networks is driven by, on the one hand, the perceived challenges that are faced by networks at the moment and, on the other hand, by the continual development of new applications and technology. The work on future networks is broad in scope and covers not only technological issues but also social, economic and environmental aspects.]]> Wed, 13 Jun 2012 11:52:12 GMT T-HDB-PLN.03-2012 http://www.itu.int/pub/T-HDB-IMPL.09-2011 This Handbook describes the general approach to testing of next generation networks (NGNs). Its goal is to assist administrations and operators in the implementation of testing as a method to verify network and services development strategies, but it can be used by vendors as well. It also discusses interoperability problems that could appear during network or service implementation.]]> Wed, 24 Aug 2011 15:44:00 GMT T-HDB-IMPL.09-2011 http://www.itu.int/pub/T-HDB-LNG.4-2010 This Handbook provides information on the use of Object Identifiers (OIDs). It consists of several parts, which will be of interest to different audiences. Part 1 is a general introduction. Part 2 contains historical and background information of a largely tutorial nature. Part 3 provides a full description of the structure of the International OID tree, the high-level arcs and major branches, and the notations and encodings used for expressing OID values. Part 4 is concerned with the practical use of OIDs. It introduces the OID repository and the ITU-T module database. It describes some of the early and current uses of OIDs. Part 5 covers more recent developments, including the International Object Identifier tree, Unicode labels and long arcs. Part 6 discusses the OID Resolution System (ORS) using the Domain Name System (DNS). Part 7 contains instructions on how to obtain an OID for various purposes, and how to manage a sub-authority for allocation of a node to children, including information on actions needed to make use of the ORS.
There are several Annexes (of which the most important are probably those concerned with the setting up and operation of a national registration authority) and a bibliography.]]> Thu, 23 Jun 2011 16:37:30 GMT T-HDB-LNG.4-2010 http://www.itu.int/pub/T-HDB-QOS.02-2011 This Handbook describes practical procedures to be used to quantify the perceived audio quality of end-to-end speech and audio communication systems.]]> Fri, 24 Jun 2011 08:40:39 GMT T-HDB-QOS.02-2011 http://www.itu.int/pub/T-HDB-IMPL.08-2010 This Handbook discusses the technologies covered by ITU-T Recommendations related to Synchronous Digital Hierarchy (SDH), Optical Transport Network (OTN) and Ethernet over Transport (EoT). Each chapter of this Handbook is dedicated to a specific aspect (architecture, multiplexing hierarchy, protection, synchronization, etc.) of SDH, OTN and EoT optical transport networks. Plesiochronous Digital Hierarchy networks, which are at present considered obsolete, and Multiprotocol Label Switching - Transport Profile, which is at a preliminary stage of standardization, are only mentioned in the Preface. Finally, the last chapter of the Handbook discusses automatically switched optical networks (ASON), based on the control planes introduced in addition to transport planes and management planes.]]> Thu, 10 Mar 2011 17:15:05 GMT T-HDB-IMPL.08-2010 http://www.itu.int/pub/T-HDB-IMPL.06-2010 This handbook provides an overview of the 18 ITU-T Recommendations dealing with the xDSL technology published as of the end of 2009. After a brief introduction of the xDSL technology, the xDSL Recommendations are grouped into nine categories: HDSL and SHDSL, five ADSL (G.992.2, splitterless ADSL, ADSL2 reach extended, splitterless ADSL2 and ADSL2plus) and two VDSL (VDSL1 and VDSL2). Operations and signalling principles of these nine families of xDSL systems are presented, emphasizing the commonalities.]]> Mon, 11 Oct 2010 13:39:04 GMT T-HDB-IMPL.06-2010 http://www.itu.int/pub/T-HDB-IMPL.07-2010 This handbook presents the ITU-T Recommendations on next generation networks in the context of the ongoing convergence of the telecommunications and media industries.]]> Thu, 07 Oct 2010 15:17:01 GMT T-HDB-IMPL.07-2010 http://www.itu.int/pub/T-HDB-OUT.10-2009-1 The manual is intended as a guide for technologists, middle-level management, as well as regulators, to assist in the practical installation of optical fibre-based systems. Throughout the discussions on the practical issues associated with the application of this technology, the explanations focus on how ITU T Recommendations address them. It provides the organized insights of those who have created and lived with the evolution of the technology for several decades.
Note: The soft-copy of this publication is downloadable free of charge on an exceptional basis, while hard-copy may eventually be purchased.]]> Wed, 24 Feb 2010 14:23:07 GMT T-HDB-OUT.10-2009-1 http://www.itu.int/pub/T-HDB-OUT.01-2009 Since the problems of preserving wood against biological agents depend on the region, they have to be studied mainly in a regional context by joint groups of technicians, producers and users of poles.]]> Wed, 21 Apr 2010 14:19:56 GMT T-HDB-OUT.01-2009 http://www.itu.int/pub/T-HDB-EMC.6-2008-2 This handbook describes case studies, supplied by ITU-T Study Group 5 members, of electromagnetic compatibility (EMC) interference problems that have affected telecommunication systems related to emission and immunity, overvoltage and overcurrent, and the solutions to such problems. This handbook also indicates typical sources of interference as well as the solutions that can be used to restore correct service to the system or to avoid any such problems before they manifest themselves.
Whilst this handbook does not cover measurement methods or how to measure emissions, overvoltage or overcurrent, as these are covered within other ITU-T Recommendations, it does, through the case studies, suggest how to detect certain problems.

The electronic version of part 2 is free of charge. www.itu.int/ITU-T/mitigation/mitigation-p2.html]]> Thu, 16 Sep 2010 09:19:52 GMT T-HDB-EMC.6-2008-2 http://www.itu.int/pub/T-HDB-IMPL.05-2009 This Handbook presents guidelines for operators planning migration of PSTN/ISDN services to packet-based networks in the evolution to next-generation networks.]]> Fri, 18 Jun 2010 15:19:43 GMT T-HDB-IMPL.05-2009 http://www.itu.int/pub/T-HDB-SEC.04-2009 ]]> Mon, 15 Feb 2010 12:14:45 GMT T-HDB-SEC.04-2009 http://www.itu.int/pub/T-HDB-EMC.1-2008-P6 ]]> Mon, 02 Jun 2008 18:57:59 GMT T-HDB-EMC.1-2008-P6 http://www.itu.int/pub/T-HDB-EMC.1-2008-P5 The Directives provide a comprehensive description of electromagnetic effects due to the close proximity of telecommunication lines to power and electrified railway systems. Such effects may result in danger to personnel, damage to telecommunication equipment, deterioration of telecommunication transmission quality or disturbance of signalling.
Volume V: "Inducing currents and voltages in power transmission and distribution systems" describes balanced and unbalanced power systems in normal operation and under fault conditions.]]> Mon, 02 Jun 2008 18:56:48 GMT T-HDB-EMC.1-2008-P5 http://www.itu.int/pub/T-HDB-MOB.01-2003 This handbook addresses a variety of issues related to the deployment of IMT-2000 systems, to inform and guide key decision-makers on critical aspects concerning third-generation mobile communication systems, to facilitate decisions on the selection of options and strategies for the introduction of their IMT-2000 networks.]]> Thu, 16 Mar 2006 10:22:01 GMT T-HDB-MOB.01-2003 http://www.itu.int/pub/T-HDB-SEC.03-2006 ]]> Fri, 25 Aug 2006 16:18:10 GMT T-HDB-SEC.03-2006 http://www.itu.int/pub/T-HDB-SEC.02-2004 ]]> Thu, 12 Jan 2006 08:56:19 GMT T-HDB-SEC.02-2004 http://www.itu.int/pub/T-HDB-SEC.01-2003 superseded]]> Thu, 12 Jan 2006 08:55:55 GMT T-HDB-SEC.01-2003 http://www.itu.int/pub/T-HDB-OUT.05-1992 ]]> Wed, 01 Jan 1992 00:00:00 GMT T-HDB-OUT.05-1992 http://www.itu.int/pub/T-HDB-MES.2-1999-M1 The Handbook on Telephonometry is intended to be a practical manual and serves as a guide to sound engineering practice. The present additions bring new complementary information to the previous edition of the Handbook (1992).]]> Fri, 01 Jan 1999 00:00:00 GMT T-HDB-MES.2-1999-M1 http://www.itu.int/pub/T-HDB-MES.2-2000-M2 The Handbook on Telephonometry is intended to be a practical manual and serves as a guide to sound engineering practice. The present additions bring new complementary information to the previous edition of the Handbook (1992).]]> Thu, 05 Oct 2006 15:01:11 GMT T-HDB-MES.2-2000-M2 http://www.itu.int/pub/T-HDB-MES.2-2001-M3 ]]> Mon, 01 Jan 2001 00:00:00 GMT T-HDB-MES.2-2001-M3 http://www.itu.int/pub/T-HDB-LNG.3.1-1982 ]]> Fri, 01 Jan 1982 00:00:00 GMT T-HDB-LNG.3.1-1982 http://www.itu.int/pub/T-HDB-LNG.3.2-1982 ]]> Fri, 01 Jan 1982 00:00:00 GMT T-HDB-LNG.3.2-1982 http://www.itu.int/pub/T-HDB-EMC.3-1974-P1 ]]> Tue, 01 Jan 1974 00:00:00 GMT T-HDB-EMC.3-1974-P1 http://www.itu.int/pub/T-HDB-EMC.3-1978-P2 ]]> Sun, 01 Jan 1978 00:00:00 GMT T-HDB-EMC.3-1978-P2 http://www.itu.int/pub/T-HDB-EMC.3-1994-P3 The Handbook "The protection of telecommunication lines and equipment against lightning discharges" was originally published in 1974, followed by the publication of additional Chapters 6, 7 and 8 in 1978. The ITU-T Study Group 5 has now prepared further new Chapters 9 and 10: Chapter 9 on fibre optic cable lightning damage assessment and Chapter 10 on overvoltages and overcurrents measured on telecommunication subscriber lines.]]> Sat, 01 Jan 1994 00:00:00 GMT T-HDB-EMC.3-1994-P3 http://www.itu.int/pub/T-HDB-EMC.1-1990-P9 ]]> Mon, 01 Jan 1990 00:00:00 GMT T-HDB-EMC.1-1990-P9 http://www.itu.int/pub/T-HDB-EMC.1-1990-P8 ]]> Mon, 01 Jan 1990 00:00:00 GMT T-HDB-EMC.1-1990-P8 http://www.itu.int/pub/T-HDB-EMC.1-1990-P7 ]]> Mon, 01 Jan 1990 00:00:00 GMT T-HDB-EMC.1-1990-P7 http://www.itu.int/pub/T-HDB-EMC.1-1990-P6 ]]> Mon, 01 Jan 1990 00:00:00 GMT T-HDB-EMC.1-1990-P6 http://www.itu.int/pub/T-HDB-EMC.1-1990-P4 ]]> Mon, 01 Jan 1990 00:00:00 GMT T-HDB-EMC.1-1990-P4 http://www.itu.int/pub/T-HDB-EMC.1-1990-P3 ]]> Mon, 01 Jan 1990 00:00:00 GMT T-HDB-EMC.1-1990-P3 http://www.itu.int/pub/T-HDB-EMC.1-1990-P1 ]]> Mon, 01 Jan 1990 00:00:00 GMT T-HDB-EMC.1-1990-P1 http://www.itu.int/pub/T-HDB-EMC.1-1999-P2 The Directives provide a comprehensive description of electromagnetic effects due to the close proximity of telecommunication lines to power and electrified railway systems. Such effects may result in danger to personnel, damage to telecommunication equipment, deterioration of telecommunication transmission quality or to disturbance of signalling. Volume II - Calculating induced voltages and currents in practical cases - describes the methods for evaluating voltages and currents resulting from capacitive, inductive and conductive coupling in a variety of commonly-encountered situations.]]> Mon, 01 Jan 1990 00:00:00 GMT T-HDB-EMC.1-1999-P2 http://www.itu.int/pub/T-HDB-EMC.1-1999-P5 The Directives provide a comprehensive description of electromagnetic effects due to the close proximity of telecommunication lines to power and electrified railway systems. Such effects may result in danger to personnel, damage to telecommunication equipment, deterioration of telecommunication transmission quality or to disturbance of signaling. Volume V - Inducing currents and voltages in power transmission and distribution systems - describes unbalanced and balanced power systems in normal operation and under fault conditions.]]> Fri, 01 Jan 1999 00:00:00 GMT T-HDB-EMC.1-1999-P5 http://www.itu.int/pub/T-HDB-OUT.08-2001 In a telephone building, the losses from damage caused by fire not only affect the persons and property directly involved in the calamity, but are felt throughout the population due to the effects of the service breakdown and the consequent loss of earnings from the service provider point of view. Moreover, the amount of information and services available to the customers is so high, nowadays, that equipment, buildings, infrastructures and installations need to be protected from damage due to calamities, including fire. This handbook is specific to the prevention of damage and the protection of telecommunication buildings from fire.]]> Mon, 01 Jan 2001 00:00:00 GMT T-HDB-OUT.08-2001 http://www.itu.int/pub/T-HDB-OUT.09-2001 The use of underwater optical cables, considered as coming under the heading of terrestrial links, has dramatically increased in recent years.
This handbook describes the characteristics, including the installation methods and testing, of a particular type of underwater cable known as marinized terrestrial cable (MTC), which, based on a conventional multiple fibre terrestrial cable core, is protected to withstand the shallow water environment and designed for specific repeaterless applications.]]> Mon, 01 Jan 2001 00:00:00 GMT T-HDB-OUT.09-2001 http://www.itu.int/pub/T-HDB-PLN.01-1993 Withdrawn]]> Fri, 01 Jan 1993 00:00:00 GMT T-HDB-PLN.01-1993 http://www.itu.int/pub/T-HDB-OUT.06-1994 ]]> Fri, 15 Sep 2006 09:50:38 GMT T-HDB-OUT.06-1994 http://www.itu.int/pub/T-HDB-OUT.07-1999 The first edition of this handbook was published in 1994. Due to the rapid development of technologies, a second edition was considered useful to include new applications for computers and microprocessors, taking into account that many countries are adopting such devices and equipment. Outside plant occupies a wide area which requires a large amount of investment and a huge amount of work on design, construction, installation and protection, especially considering the new telecommunication services now available and the future role of access networks.]]> Fri, 01 Jan 1999 00:00:00 GMT T-HDB-OUT.07-1999 http://www.itu.int/pub/T-HDB-OUT.02-1978 ]]> Thu, 14 Jan 2010 14:19:04 GMT T-HDB-OUT.02-1978 http://www.itu.int/pub/T-HDB-OUT.03-1982 ]]> Fri, 01 Jan 1982 00:00:00 GMT T-HDB-OUT.03-1982 http://www.itu.int/pub/T-HDB-OPR.01-1993 These instructions include Recommendation ITU-T E.141 which was withdrawn on 20 March 2003 by Circular 156.]]> Fri, 01 Jan 1993 00:00:00 GMT T-HDB-OPR.01-1993 http://www.itu.int/pub/T-HDB-OUT.01-1974 ]]> Tue, 01 Jan 1974 00:00:00 GMT T-HDB-OUT.01-1974 http://www.itu.int/pub/T-HDB-MES.3-2001 «Handbook on interference measuring techniques» contains information on EMC design of telecommunications equipment and discusses certain EMC test methods. Together with «Volume IX» of the «Directives», this handbook provides comprehensive information on EMC and overvoltage testing and measurements.]]> Mon, 01 Jan 2001 00:00:00 GMT T-HDB-MES.3-2001 http://www.itu.int/pub/T-HDB-MES.1-1984 (Hard copies in English, French, Spanish are out of print).]]> Thu, 14 Jan 2010 16:12:02 GMT T-HDB-MES.1-1984 http://www.itu.int/pub/T-HDB-MES.2-1993 ]]> Fri, 01 Jan 1993 00:00:00 GMT T-HDB-MES.2-1993 http://www.itu.int/pub/T-HDB-IMPL.02-1991 ]]> Tue, 01 Jan 1991 00:00:00 GMT T-HDB-IMPL.02-1991 http://www.itu.int/pub/T-HDB-IMPL.03-1991 ]]> Tue, 01 Jan 1991 00:00:00 GMT T-HDB-IMPL.03-1991 http://www.itu.int/pub/T-HDB-IMPL.04-1993 ]]> Fri, 01 Jan 1993 00:00:00 GMT T-HDB-IMPL.04-1993 http://www.itu.int/pub/T-HDB-LNG.1-1993 ]]> Fri, 01 Jan 1993 00:00:00 GMT T-HDB-LNG.1-1993 http://www.itu.int/pub/T-HDB-LNG.2-1986 ]]> Wed, 01 Jan 1986 00:00:00 GMT T-HDB-LNG.2-1986 http://www.itu.int/pub/T-HDB-EMC.4-2001 This Guide presents an overview of the ITU-T documents (prepared by Study Group 5) giving information on measures to achieve electromagnetic compatibility for telecommunication equipment and installations.
This Guide is aimed at telecommunication equipment designers and operators and is also helpful for users in developing countries.]]> Mon, 01 Jan 2001 00:00:00 GMT T-HDB-EMC.4-2001 http://www.itu.int/pub/T-HDB-EMC.5-2003 This ITU-T handbook on Earthing and Bonding is for use by engineers designing telecommunication systems, especially those concerned with applying protective measures. It aims to give the user a background to various terms used within the telecommunication and power industry regarding earthing and bonding of equipment and structures (Chapter 1) in various parts of the world. The concepts of earthing and bonding are described (Chapter 2) together with how to implement such methods (Chapters 3 and 4), detailing why these are necessary and what the results may be if they are not performed correctly. The final section of the handbook shows how to evaluate and maintain the effectiveness/quality of the earthing systems and bonding networks thus created.]]> Wed, 01 Jan 2003 00:00:00 GMT T-HDB-EMC.5-2003 http://www.itu.int/pub/T-HDB-EMC.6-2004 This handbook describes case studies, supplied by ITU-T Study Group 5 members, of electromagnetic compatibility (EMC) interference problems that have affected telecommunication systems related to emission and immunity, overvoltage and overcurrent and the solutions to such problems. This handbook also indicates typical sources of interference as well as the solutions that can be used to restore correct service to the system or to avoid any such problems before they manifest themselves.
Whilst this handbook does not cover measurement methods or how to measure emissions, overvoltage or overcurrent as these are covered within other ITU-T Recommendations, it does, through the case studies, suggest how to detect certain problems.
]]> Mon, 27 Jun 2005 17:07:00 GMT T-HDB-EMC.6-2004 http://www.itu.int/pub/T-HDB-IMPL.01-1987 ]]> Thu, 01 Jan 1987 00:00:00 GMT T-HDB-IMPL.01-1987 http://www.itu.int/pub/T-HDB-EMC.2-1976 ]]> Thu, 01 Jan 1976 00:00:00 GMT T-HDB-EMC.2-1976