The ITU Telecommunication Standardization Sector ITU T is one of the three sectors divisions or units of the International Telecommunication Union ITU it coordinates standards for telecommunications. It is based in Geneva , Switzerland . The standardization work of ITU dates back to 1865, with the birth ... Consultatif International T l phonique et T l graphique was created in 1956. It was renamed ITU T in 1993. ref name ITUhistory cite web title ITU s History url http www.itu.int en history overview Pages history.aspx publisher International Telecommunication Union accessdate 2011 03 20 ref ITU has ... undertake most of the work of the Sector. ref cite web title About ITU url http www.itu.int net about index.aspx publisher International Telecommunication Union accessdate 2011 03 20 ref ITU T has a permanent secretariat, the Telecommunication Standardization Bureau TSB , based at the ITU HQ in Geneva ... of the UK . Mr. Johnson was elected by the ITU Membership to the Directorship for a 4 year term in November 2006 and was reelected for a second term starting January 2011. Primary function The ITU ... telecommunication services. ref http www.itu.int ITU T info index.html ITU T and TSB General Information Bot generated title ref The international standards that are produced by the ITU T are referred ... of a national law. Since the ITU T is part of the ITU, which is a United Nations specialized agency ... iespprimers eprimer igov.pdf p13 ref History Although the ITU itself dates back to 1865, ref ... created by the ITU s 1925 Paris conference to deal with the complexities of the international telephone ... page8 cite web title CCITT 50 YEARS OF EXCELLENCE 1956 2006 url http www.itu.int ITU T 50 docs ITU T 50.pdf page 8 publisher International Telecommunication Union accessdate 2011 03 20 ref In view ... the top policy making conference of ITU saw a reform of ITU, giving the Union greater flexibility ... that CCITT was renamed the Telecommunication Standardization Sector ITU T , as one of three Sectors ... more details
of S o Paulo, Brazil pointing Itu Coat of Arms Flag bgcolor FFFFFF colspan 1 align center Image ... the state capital 88 km Itu is an old and historic municipality in the state of S o Paulo state S o ... comes from the Tupi language , meaning big waterfall . Itu is linked with the highway numbered the SP 75 and are flowed with two rivers, Tiet River Tiet and Jundia river Jundia . Itu has five hospitals, eleven bank agencies and one shopping center, the Plaza Shopping Itu. Itu was founded by the Portugal ... to a town and municipality. It became a part of Brazil in 1822. It became a city in 1843. Itu was the birth place of the Brazilian Republic and has a renowned museum. Itu became a famous town after Simplicio a well known Brazilian comedian, born in Itu, was made Tourism Secretary and to increase ... high yellow phone booth orelh o . The Itu popsicle is about 30 cm 1 feet tall. And a giant Christmas ... Day Adventist Reform Movement held their international delegation session in Itu bringing people ... SP 75 SP 79 SP 280 SP 300 SP 308 SP 312 Images gallery File Igreja matriz de Itu.jpg Itu s main parochial church. File ITU 07 2009 Giant traffic signal 6058.jpg Giant traffic signal . Itu is known as the capital of large things File Itu 05 2009 Museu da Energia 5864.jpg Energy Museum File ITU 07 2009 Giant Phone 6037.jpg Giant public pay phone. Itu is known as the capital of large things gallery ... Site pt icon http www.itu.com.br Itu s Portal pt icon http www.itu.sp.gov.br Government Site pt icon http www.citybrazil.com.br sp ituItu on citybrazil.com.br Category Populated places in S o Paulo state Category Populated places established in 1610 de Itu Brasilien eml It fr Itu bpy it Itu Brasile la Ytua nl Itu no Itu pl Itu miasto pt Itu ro Itu ru sv Itu, Brasilien vo Itu war Itu ... more details
ITU may refer to International Telecommunication Union , formerly known as the International Telegraph Union Intensive Treatment Unit or Intensive Therapy Unit International Triathlon Union , headquartered in North Vancouver, British Columbia, Canada International Typographical Union , a labor union that was affiliated with the Congress of Industrial Organizations and is now part of the Communications Workers of America. Istanbul Technical University , an international technical university, located in Istanbul, Turkey IT University of Copenhagen , a Danish cross disciplinary University which approaches the study of information technology from a variety of perspectives Institute for Transuranium Elements , a European Commission nuclear research institute in Karlsruhe, Germany See also Itu , a municipality in Brazil disambig ca ITU da ITU de ITU es ITU eo ITU fr ITU ko ITU id ITU it ITU nl ITU ja ITU no ITU pl ITU pt ITU ro ITU sl ITU tr ITU ... more details
DSL technologies ITU G.993.1 is an International Telecommunication Union ITU standard for DSL that defines Very High Speed Digital Subscriber Line VDSL . See also ITU T Very High Speed Digital Subscriber Line VDSL External links http www.itu.int rec T REC G.993.1 en ITU T Recommendation G.993.1 Very high speed digital subscriber line transceivers VDSL http www.itu.int rec recommendation.asp?type products&lang e&parent T REC G ITU T Recommendations Series G http www.itu.int ITU T index.html ITU T Category ITU T recommendations G.993.1 nl ITU G.993.1 ... more details
DSL technologies ITU G.993.2 is an International Telecommunication Union ITU standard for DSL that defines Very High Speed Digital Subscriber Line 2 VDSL2 . See also ITU T Very High Speed Digital Subscriber Line VDSL External links http www.itu.int rec T REC G.993.2 en ITU T Recommendation G.993.2 Very high speed digital subscriber line transceivers 2 VDSL2 http www.itu.int rec T REC G e ITU T Recommendations Series G http www.itu.int ITU T ITU T http www.itu.int newsroom press releases 2005 06.html Press Release on ITU T G.993.2 telecomm stub Category ITU T recommendations G.993.2 it ITU G.993.2 pt ITU T G.993.2 nl ITU G.993.2 ... more details
DSL technologies ITU G.991.1 is an International Telecommunication Union ITU standard for DSL that defines High bit rate Digital Subscriber Line HDSL . See also ITU T High bit rate Digital Subscriber Line HDSL External links http www.itu.int rec T REC G.991.1 en ITU T Recommendation G.991.1 High bit rate Digital Subscriber Line HDSL http www.itu.int rec recommendation.asp?type products&lang e&parent T REC G ITU T Recommendations Series G http www.itu.int ITU T index.html ITU T Category ITU T recommendations G.991.1 ... more details
The ITU Radiocommunication Sector ITU R is one of the three sectors divisions or units of the International Telecommunication Union ITU and is responsible for radio communication. Its role is to manage the international radio frequency spectrum and satellite orbit resources and to develop standards for radiocommunications systems with the objective of ensuring the effective use of the spectrum . ref cite web title Radiocommunication Sector url http www.itu.int net about itu r.aspx publisher International Telecommunication Union accessdate 2011 03 20 ref ITU is required, according to its Constitution, to allocate spectrum and register frequency allocation , orbital positions and other parameters of satellites , in order to avoid harmful interference between radio stations of different countries . The international spectrum management system is therefore based on regulatory procedures for frequency coordination , notification and registration. ITU R has a permanent secretariat, the Radiocommunication Bureau, based at the ITU HQ in Geneva , Switzerland . The elected Director of the Bureau is Mr. Valery Timofeev of Russia . First elected by the ITU Membership to the Directorship in 2002, Mr. Timofeev was re elected for a 2nd 4 year term in November 2006. History The CCIR Comit consultatif international pour la radio , Consultative Committee on International Radio or International Radio ... the original ITU , which had been founded as the International Telegraph Union in 1865 merged ... became the ITU R. See also ITU T Category ITU R recommendations ITU R Recommendations Rec. 601 Rec. 709 Global Standards Collaboration References Reflist External links http www.itu.int ITU official website http www.itu.int ITU R ITU R official website SMPTE standards Category International Telecommunication ... da International Telecommunication Union, ITU Radiocommunication Sector de Comit Consultatif International des Radiocommunications es CCIR ko ITU R it ITU R nl ITU R ja ITU R pl CCIR ru ... more details
Unreferenced stub auto yes date December 2009 he ITU Telecommunication Development Sector ITU D is one of the three sectors divisions or units of the International Telecommunication Union ITU it is responsible for creating policies, regulation and providing training programs and financial strategies in developing countries. Created in 1992, its secretariat is the Bureau de d veloppement des t l communications BDT , known in English language English as the Telecommunication Development Bureau. DEFAULTSORT Itu D Category International Telecommunication Union D Int org stub ... more details
Multiple issues wikify December 2010 notability November 2009 morefootnotes date November 2009 Infobox Radio Station name Radio ITU image city Istanbul area Broadcasting on Internet branding slogan airdate 1945 frequency format Polyphonic music power erp class callsign meaning owner Istanbul Technical University website http www.radyo.itu.edu.tr en www.radyo.itu.edu.tr en Radio ITU or Technical University Radio ref http www.radyo.itu.edu.tr content.php?action press&id 1 ref is the first university radio in Turkey. ref http www.gazete.itu.edu.tr mart 11radyo.pdf ref Radio ITU is located in the School of Electrical and Electronic Engineering building in Maslak campus. References reflist External links http www.radyo.itu.edu.tr en Radio ITU , official website http www.radyo.itu.edu.tr en content.php?id 12 Radio ITU Notable people http www.radyo.itu.edu.tr en content.php?id 13 Photos of radio ITU http www.radyo.itu.edu.tr en content.php?action press&id 1 Radio ITU in Turkish press Istanbul Technical University DEFAULTSORT Radio Itu Category Istanbul Technical University tr T Radyosu ... more details
ITU T Home networking Recommendations G.9970 also known as G.hnta is a Recommendation developed by ITU T that describes the generic transport architecture for home network home networks and their interfaces to the operators broadband access networks. ref http www.itu.int rec T REC G.9970 en G.9970 Recommendation ITU T website ref G.9970 was developed by Study Group 15, Question1. G.9970 received Consent on December 12 2008 and was Approved on January 13 2009. ref http www.itu.int itu t aap AAPRecDetails.aspx?AAPSeqNo 1828 G.9970 AAP Process Details ref Relationship with G.hn Image Ghnta.png thumb border right 200px upright Relationship between G.hnta and G.hn G.9970 G.hnta and G.9960 G.hn are two ITU T Recommendations that address home networking in a complementary manner. While G.9970 addresses Layer 3 Network Layer of the Home Network architecture, G.9960 addresses Layers 1 Physical Layer and 2 Data Link Layer . References references See also G.hn G.9960 Category ITU T recommendations G.9970 Category Networking standards Category Network protocols Category Open standards Category International standards Category Computer networks Category Internet standards ... more details
ITU T Home networking Recommendations ITU G.9972 also known as G.cx is a Recommendation developed by ITU T that specifies a coexistence mechanism for networking transceivers capable of operating over power line wiring. The coexistence mechanism allows G.hn devices to coexist with other devices implementing G.9972 and operating on the same power line wiring. G.9972 received consent during the meeting of ITU T Study Group 15, on October 9 2009 ref http www.homegridforum.org news events pr 10 09 09 UNITED NATIONS ITU T RATIFIES G.HN STANDARD FOR WIRED HOME NETWORKING , HomeGrid Forum Press Release ref and final approval on June 11th 2010 ref http www.marketwire.com press release United Nations ITU Ts Ghn Approved as Global Standard for Wired Home Networking 1274797.htm United Nations ITU T s G.hn Approved as Global Standard for Wired Home Networking ref . Coexistence with BPL Access networks G.9972 specifies two mechanisms for coexistence between G.hn home networks and Broadband over Power Lines BPL access networks Frequency division multiplexing FDM , in which the available spectrum is divided in two parts frequencies below 10 or 14 MHz specific value can be selected by the access network are reserved for the access network, while frequencies above them are reserved for the in home network. Time division multiplexing TDM , in which the available channel time is split equally between both networks. 50 of time slots are allocated for the access network, and 50 are allocated to the in home network. References references Category ITU T recommendations G.9972 Category Networking standards G.9972 Category Network protocols Category Open standards Category International standards Category Computer networks ... more details
Sources date December 2007 DSL technologies In telecommunications , ITU G.992.2 better known as G.Lite is an International Telecommunication Union ITU standard for Asymmetric Digital Subscriber Line ADSL using discrete multitone modulation . G.Lite does not strictly require the use of phone line DSL filter splitters , but like all ADSL lines generally functions better with splitters. G.lite is a modulation profile which can be selected on a DSLAM port by an ADSL provider and provides greater resistance to noise and tolerates longer loop lengths DSLAM to customer distances for a given bandwidth. Most ADSL modems and DSLAM ports support it, but it is not a typical default configuration. Real life download speeds with this modulation is 1.5 Mbit s. ref name searchcio midmarket techtarget com 0 sid183 gci212198 00 cite web title What is G.lite? a definition from Whatis.com see also Glite, Universal ADSL url http searchcio midmarket.techtarget.com sDefinition 0,,sid183 gci212198,00.html 090327 searchcio midmarket.techtarget.com ref See also List of device bandwidths References references External links http www.itu.int rec T REC G.992.2 en ITU T Recommendation G.992.2 Splitterless asymmetric digital subscriber line ADSL transceivers Category Digital Subscriber Line Category ITU T recommendations G.992.2 telecomm stub de Universal Asymmetric Digital Subscriber Line pt UDSL ru ITU G.992.2 ... more details
Infobox River river name Itu River image name image size caption origin Rio Grande do Sul state mouth Ibicu River basin countries Brazil length elevation mouth elevation discharge watershed The Itu River Portuguese language Portuguese , Rio Itu ref GEOnet2 32FA8841063F3774E0440003BA962ED3 Rio Itu ref is a river of Rio Grande do Sul state in southern Brazil . It is a tributary of the Ibicu River , which in turn is a tributary of the Uruguay River . See also List of rivers of Rio Grande do Sul coord 29 24 37 S 55 51 2 W type river region BR dim 10km display title notes ref GEOnet Names Server GNS coordinates adjusted using Google Maps , and http tools.freeside.sk geolocator geolocator.html GeoLocator ref References Reflist http www.zonu.com imapa americas md Rio Grande do Sul brazil.pdf Brazilian Ministry of Transport RioGrandedoSul geo stub Category Rivers of Rio Grande do Sul ... more details
Infobox Football biography playername Lucian Itu image fullname Lucian Itu height height m 1.77 dateofbirth Birth date and age 1978 9 8 mf y cityofbirth Cugir countryofbirth Romania currentclub FC International clubnumber 9 position Striker youthyears youthclubs years 2002 2003 br 2003 2005 br 2005 2007 br 2007 2010 br 2010 clubs FC Cugir br Inter Blaj br Minerul Lupeni br FC Interna ional Curtea de Arge FC Interna ional br Minerul Lupeni caps goals 27 17 br 52 17 br 41 15 br 35 9 br 7 7 pcupdate September 4, 2009 nationalyears nationalteam nationalcaps goals ntupdate Lucian Itu born September 8, 1978, Cugir is an Romania Romanian association football footballer currently under contract with Liga II side Minerul Lupeni . External links http www.romaniansoccer.ro players i itu lucian.shtml Profile at Romaniansoccer.ro Persondata Metadata see Wikipedia Persondata . NAME Itu, Lucian ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH September 8, 1978 PLACE OF BIRTH Cugir , Romania DATE OF DEATH PLACE OF DEATH DEFAULTSORT Itu, Lucian Category 1978 births Category Living people Category Romanian footballers Category Association football forwards Category Liga I players Romania footy striker stub ... more details
Infobox person name Itu image image size alt caption birth name birth date birth date YYYY MM DD birth place death date Death date and age YYYY MM DD YYYY MM DD death date then birth death place body discovered death cause resting place resting place coordinates coord LAT LONG display inline,title residence nationality ethnicity citizenship other names known for education alma mater employer notable works occupation years active home town salary networth height weight title Prince of Egypt term predecessor successor party opponents boards religion Ancient Egyptian religion spouse partner children parents Prince Rahotep and Nofret relations two brothers and three sisters callsign awards signature signature alt website footnotes box width misc Itu was an Egypt ian prince who lived during 4th dynasty. He was a son of prince Rahotep Rahotep and Nofret , grandson of pharaoh Sneferu and nephew of pharaoh Khufu . He had two brothers and three sisters. ref http forum.egyptiandreams.co.uk viewtopic.php?t 2236&sid a0f261af0da6951132d831a24cb694f5 Forum about Nofret ref References reflist Category Ancient Egyptian princes Category Fourth dynasty of Egypt hr Itu ... more details
DSL technologies ITU G.992.3 is an ITU International Telecommunication Union standard, also referred to as ADSL2 or G.DMT.bis . It optionally extends the capability of basic Asymmetric Digital Subscriber Line ADSL in data rates to 12 Mbit s downstream and, depending on ADSL2 Annexes Annex version , up to 3.5 Mbit s upstream with a mandatory capability of ADSL2 transceivers of 8 Mbit s downstream and 800 kbit s upstream . ADSL2 utilizes the same bandwidth as ADSL but achieves higher throughput via data compression techniques. Actual speeds may reduce depending on line quality&mdash usually the most significant factor in line quality is the distance from the Digital subscriber line access multiplexer DSLAM to the customer s equipment. ITU G.992.4 is a standard for DSL filter splitterless ADSL2 with data rate mandatory capability reduced to 1.536 MB s downstream and 512 kbit s upstream. It is also referred to as G.lite.bis . Image ADSL2 frequencies.png ADSL2 Annexes ADSL2 has multiple modes for DSL providers to offer better services for different needs. Below is a list of available features based on ADSL2 specs from the ITU standards. class wikitable Annex Version Spec Description A xDSL over POTS xDSL service functioning over POTS. B xDSL over ISDN xDSL Services running over ISDN Digital Phone services. C xDSL in ISDN xDSL System operating in the same cable as ISDN as defined in ITU T Rec. G.961 Appendix III Currently not implemented D ATU C and ATU R state diagrams See Annex D ... from 1.4 Mbit s to 3.3 Mbit s. See also Asymmetric Digital Subscriber Line ADSL ITU G.992.5 ADSL2 List of device bandwidths External links http www.itu.int rec T REC G.992.3 en ITU T Recommendation ... G.992.4 en ITU T Recommendation G.992.4 Splitterless asymmetric digital subscriber line transceivers ... Paper Portable Document Format PDF Aware Category Digital Subscriber Line Category ITU T recommendations ... Line 2 es ADSL2 it ITU G.992.3 4 nl ADSL2 pl ADSL2 ru ITU G.992.3 4 tr ADSL2 ... more details
Sharra Itu is a Sumerian mythology Sumerian fertility goddess, originally the tutelary deity of the city of Su Sin . By Hellenistic times she had probably become the more important deity Sarrahitu who is included in the pantheon at Uruk and mentioned in various cult texts where she is described as the bride . Presumably she was involved in a sacred marriage ceremony. References Michael Jordon, Encyclopedia of Gods, Kyle Cathie Limited, 2002 Category Mesopotamian deities Category Fertility goddesses Category Tutelary MEast myth stub ... more details
Cleanup date February 2010 ITU V.70 is a standard for Digital Simultaneous voice and data Simultaneous Voice and Data DSVD , a MODEM related standard wherein digitized voice is mixed with digital data over a Plain old telephone service POTS line or leased line. DSVD allows users of two DSVD capable modems to simultaneously engage in a point to point voice conversation and data transmission. DSVD does not appear to allow dialup internet users or users of point to point modem connections such as to the office or a Bulletin Board System to make or receive arbitrary voice calls while online in ordinary circumstances though this may theoretically be possible in special circumstances such as when the user s internet service provider and telephone service provider are the same organization and or with special equipment on the telco end in place of a normal Subscriber Line Interface Circuit SLIC . Today, such a service, if offered, would typically be provided via VoIP , ISDN , and or via DSL over the same wires as an analog POTS line. This standard was released in 1996, at a time when consumer access to The Internet was beginning to take off as were Cell Phones . A google search shows little evidence that DSVD was ever widely adopted, let alone extended to provide the features consumers actually needed arbitrary calls while connected , and was largely obsoleted by the services offered and the changes in usage that accompanied the rise of The Internet. In the internet model, the user s modem does not connect directly to a site where there may be parties the user wishes to have a voice .... Standards G.729 , H.245 , V.8 recommendation V.8 bis, V.25 bis, V25 ter, V.32 bis, V.34 , ITU V.75 V.75 , V.76 , and ITU V.80 V.80 are incorporated by reference. See also V.61 Analog Simultaneous Voice and Data ASVD ITU T V Series Recommendations References http www.usb.org developers devclass docs ... en V.70 Standard Category ITU T recommendations V.70 Telecomm stub ... more details
Infobox settlement official name Itu, Nigeria other name native name nickname settlement type Local Government Areas of Nigeria LGA motto image skyline imagesize image caption image flag flag size image seal seal size image map mapsize map caption pushpin map pushpin label position pushpin mapsize pushpin map caption subdivision type Country subdivision name flag Nigeria subdivision type1 States of Nigeria State subdivision name1 Akwa Ibom State subdivision type2 Capital subdivision name2 subdivision type3 subdivision name3 government footnotes government type leader title leader name established title established date area magnitude unit pref Imperial area footnotes area total km2 area land km2 population as of 2006 population footnotes population note population total population density km2 timezone West Africa Time WAT utc offset 1 timezone DST utc offset DST latd latm lats latNS N longd longm longs longEW E elevation footnotes elevation m elevation ft postal code type postal code area code blank name blank info website footnotes Itu is located in the south east of Nigeria and is a Local Government Areas of Nigeria Local Government Area of Akwa Ibom State . coord missing Nigeria LGAs and communities of Akwa Ibom State Category Local Government Areas in Akwa Ibom State Category Populated places in Akwa Ibom State Nigeria stub ... more details
Orphan date January 2011 New unreviewed article source ArticleWizard date December 2010 ITU T Y.156sam Ethernet Service Activation Test Methodology is a draft recommendation currently under study by the ITU T describing a new testing methodology adapted to the multiservice reality of packet based networks. ITU T Y.156sam is designed around three key objectives To serve as a network service level agreement SLA validation tool, ensuring that a service meets its guaranteed performance settings in a controlled test time To ensure that all services carried by the network meet their SLA objectives at their maximum committed rate, proving that under maximum load network devices and paths can support all the traffic as designed To perform medium and long term service testing, confirming that network element can properly carry all services while under stress during a soaking period br ITU T Y.156sam defines an out of service test methodology to assess the proper configuration and performance of an Ethernet service prior to customer notification and delivery. The test methodology applies to point to point and point to multipoint connectivity in the Ethernet layer and to the network portions that provide, or contribute to, the provisioning of such services. This recommendation does not define Ethernet network architectures or services, but rather defines a methodology to test Ethernet based ... latency with a good throughput, which should be cause for concern. br Service definitions The ITU T Y.156sam ... information rate EIR . Test rates The ITU Y.156sam defines three key test rates based on the MEF ... discarded traffic overshoot CIR or overshoot EIR . br Methodology The ITU T Y.156sam is built around ... fairly new, the ITU T Y.156sam has already gained momentum in the test and measurement industry. EXFO is the first test vendor to fully implement the ITU T Y.156sam in its Ethernet and multiservice ... MEF 10.1 Categories Uncategorized date January 2011 DEFAULTSORT Itu T Y.156sam Category Articles ... more details
wikify date March 2011 ITU T Y.1564 is a Ethernet service activation test methodology, formerly known as ITU T Y.156sam, is the new ITU T standard for turning up, installing and troubleshooting Ethernet based services. It is the only standard test methodology that allows for complete validation of Ethernet service level agreements SLAs in a single test. ITU T Y.1564 is designed around three key objectives To serve as a network service level agreement SLA validation tool, ensuring that a service meets its guaranteed performance settings in a controlled test time To ensure that all services carried by the network meet their SLA objectives at their maximum committed rate, proving that under maximum load network devices and paths can support all the traffic as designed To perform medium and long term service testing, confirming that network element can properly carry all services while under stress during a soaking period br ITU T Y.1564 defines an out of service test methodology to assess the proper configuration and performance of an Ethernet service prior to customer notification and delivery. The test methodology applies to point to point and point to multipoint connectivity in the Ethernet layer and to the network portions that provide, or contribute to, the provisioning of such services. This recommendation does not define Ethernet network architectures or services, but rather defines a methodology to test Ethernet based services at the service activation stage. In particular .... br Service definitions The ITU T Y.1564 defines test streams with service attributes linked ... committed information rate CIR , and excess information rate EIR . Test rates The ITU Y.156sam defines ... The ITU T Y.1564 is built around two key subtests, the service configuration test and the service .... br Vendor implementation br Although fairly new, the ITU T Y.1564 has already gained momentum in the test and measurement industry. EXFO is the first test vendor to fully implement the ITU T Y.1564 ... more details
Update date October 2010 Refimprove date January 2009 The International Telecommunication Union ITU allocates call sign call sign prefix es for radio station radio and television station television stations of all types. They also form the basis for, but do not exactly match, aircraft registration identifiers. These prefixes are agreed upon internationally, and are a form of country code . A call sign can be any number of letters and numerals but each country must only use call signs that begin with the characters allocated for use in that country. A few countries do not fully comply with these rules. Australian broadcast stations officially have but do not use the VL prefix, and Canada uses Chile s CB for its own Canadian Broadcasting Corporation stations. This is through a special agreement Citation needed date February 2007 with the government of Chile , which is officially assigned the CB prefix. With regard to the second and or third letters in the prefixes in the list below, if the country in question is allocated all callsigns with A to Z in that position, then that country can also use call signs with the digits 0 to 9 in that position. For example, the United States is assigned ... allocation by the ITU. x represents any letter n represents any digit from 2&ndash 9. E6, E8, E9 ... been returned to the ITU. Unavailable Under present ITU guidelines the following call sign prefixes ... I or O . two digit prefixes nn are not as yet considered by the ITU. Table of Allocation of International Call Sign Series Gridded chart of ITU prefixes br ITU prefixes by nation class wikitable Call ... T3 Kiribati T4 Cuba T5 Somalia T6 Afghanistan T7 San Marino T8 Palau T9 T9 returned to the ITU on 7 ... 9W Malaysia 9X Rwanda 9Y&ndash 9Z Trinidad and Tobago See also ITU prefix amateur and experimental ... callsign.sh?lng E ITU table of international callsigns Use dmy dates date March 2011 DEFAULTSORT Itu ... es Anexo Prefijos radiof nicos gl Prefixo radiof nico id Awalan ITU ms Awalan ITU nl Prefix ... more details
Original research article date December 2008 DSL technologies In telecommunications , ITU G.992.1 better known as G.DMT is an International Telecommunication Union ITU standard for Asymmetric Digital Subscriber Line ADSL using discrete multitone modulation . G.DMT full rate ADSL expands the usable bandwidth of existing copper telephone lines, delivering high speed data communications at rates up to 12 Mbit s downstream and 1.3 Mbit s upstream. DMT allocates from 2 to 15 bits per channel bin . As line conditions change, bit swapping allows the modem to swap bits around different channels, without retraining, as each channel becomes more or less capable. If bit swapping is disabled then this does not happen and the modem needs to retrain in order to adapt to changing line conditions. There are 2 competing standards for DMT ADSL ANSI & G.DMT ANSI T1.413 is a North American standard, G.992.1 G.DMT is an ITU United Nations Telecom committee standard. G.DMT is used most commonly today, throughout the world, but the ANSI standard was formerly popular in North America. There is a difference in framing between the two, and selecting the wrong standard can cause frame alignment errors every 5 or so minutes. Error correction is done using Reed Solomon encoding and further protection can be used if Trellis modulation Trellis encoding is used at both ends. Interleaving can also increase the robustness ... Digital Subscriber Line ADSL , ITU G.992.5 ADSL2 and VDSL Image ADSL Line Rate Attenuation.gif thumb ... Digital Subscriber Line ADSL , ITU G.992.3 4 ADSL2 and ITU G.992.5 ADSL2 Modulation is the overlaying ... second graph clearly shows that for longer lines exceeding around 50 dB attenuation, ITU G.992.3 4 ADSL2 and ITU G.992.5 ADSL2 bring no benefit in terms of speed. However, ITU G.992.3 4 ADSL2 ... G.992.1 en ITU T Recommendation G.992.1 Asymmetric digital subscriber line ADSL transceivers http ... Line Category ITU T recommendations G.992.1 de G.992.1 fr G.992.1 pl G.992.1 ru ITU G.992.1 ... more details
DSL technologies ITU G.992.5 is an ITU International Telecommunication Union standard, also referred to as ADSL2 or ADSL2Plus . Commercially it is notable for its maximum theoretical download speed of 24 Mbit s . Technical information ADSL2 extends the capability of basic Asymmetric Digital Subscriber Line ADSL by doubling the number of downstream computer science downstream bit s. The data rates can be as high as 24 Mbit s downstream and up to 1.4 Mbit s upstream depending on the distance from the digital subscriber line access multiplexer DSLAM to the customer s premises. ADSL2 is capable of doubling the frequency band of typical ADSL connections from 1.1 MHz to 2.2 MHz. This doubles the downstream data rates of the previous ADSL2 standard which was up to 12 Mbit s , but like the previous standards will degrade from its peak bitrate after a certain distance. Also ADSL2 allows port bonding. This is where multiple ports are physically provisioned to the end user and the total bandwidth is equal to the sum of all provisioned ports. So if 2 lines capable of 24 Mbit s were bonded the end result would be a connection capable of 48 Mbit s download and twice the original upload speed. Not all DSLAM vendors have implemented this functionality. ADSL2 port bonding is also known as G.998.x or G.Bond . class wikitable ITU T Spec Description G.998.1 ATM based multi pair bonding A method for bonding of multiple DSL lines to transport an ATM payload beyond the rate reach capability of a single DSL loop. This protocol allows the bonding of 2 to 32 pairs and supports ... are still using ITU G.992.1 Annex B but the company will upgrade the line on demand. Macedonia T Home ... T REC G.992.5 en ITU T Recommendation G.992.5 Asymmetric Digital SubscriberLine ADSL transceivers Extended bandwidth ADSL2 ADSL2 DEFAULTSORT Itu G.992.5 Category Digital Subscriber Line Category ITU T recommendations G.992.5 et ADSL2 es ADSL2 fr ADSL 2 it ITU G.992.5 hu ADSL2 pl ADSL2 pt ADSL2 fi ... more details
ITU T recommendation T.50 specifies International Reference Alphabet 5 IA5 , a character set encoding. ASCII is the U.S. variant of that character set. External links http www.itu.int rec T REC T.50 en Official ITU T T.50 page Category ITU T recommendations telecomm stub ... more details
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