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ICTs for a Sustainable World #ICT4SDG

CCITT and ITU-T Study Groups (1956 - present)


Standardization work is carried out by the technical Study Groups (SGs) in which representatives of the ITU-T membership develop Recommendations (standards) for the various fields of international telecommunications.
 
 
The SGs drive their work primarily in the form of study Questions. Each of these addresses technical studies in a particular area of telecommunication standardization. Each SG has a SG Chairman and a number of vice-chairmen appointed by the World Telecommunication Standardization Assembly (WTSA).
 
 
 

Period 1956 - 1960

Study Group ​Name Chairman
Study Group 1​Coordination of studies of line transmission and general transmission problems​Mr. G.H. Bast (Netherlands)​
Study Group 2​General coordination for operation and tariffs​Mr. A. Langenberger (Switzerland)​
Study Group 3​Introduction of radio relay links into the general line telecommunication network. Linking-up of radio circuits to the general network​Mr. V. Gori (Italy)​
Study Group 4​Maintenance of the general telecommunication network​Mr. J. Valloton (Switzerland)​
Study Group 5​Protection against dangers and disturbances of electromagnetic origin​Mr. L.J. Collet (France)​
Study Group 6​Protection and specifications of cable sheaths and poles​Mr. H.L. Halstrom (Denmark)​
Study Group 7​Definitions, Vocabulary, Symbols​Mr. G. Gella (Spain)​
Study Group 8​Telegraph apparatus and local connecting lines. Facsimile and phototelegraphy​Mr. P. Pellé (France)​
MP ​Joint Study Group CCIR-CCITT for phototelegraphy​Mr. P. Pellé (France)​
Study Group 9​Quality of telegraph transmission, specification of channel equipments and directives for maintenance of telegraph channels​Mr. H.L. van Lommel (Netherlands)​
Study Group 10​Telegraph and Telex switching​Mr. E.H. Jolley (United Kingdom)​
Study Group 11​Telephone signalling and switching​Mr. D.A. Barron (United Kingdom)​
Study Group 12​Telephone transmission quality and local telephone networks​Mr. G. Swedenborg (Sweden)​
PLAN​General plan for the development of the international network​Mr. Antinori (Italy)​

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Period 1961 - 1964

Study Group​Name ​Chairman
Study Group I​Telegraph operation and tariffs (telex service included)​Mr. T. Perry (Netherlands)​
Study Group II​Telephone operation and tariffs​Mr. G. Terras (France)​
Study Group III​General tariff principles. Lease of telecommunication circuits​Mr. A. Langenberger (Switzerland)​
Study Group IV​Maintenance of the general telecommunication network​Mr. J. Valloton (Switzerland)​
Study Group V​Protection against dangers and disturbances of electromagnetic origin​Mr. H. Riedel (F.R. of Germany)​
Study Group VI​Protection and specifications of cable sheaths and poles​Mr. H.L. Halstrom (Denmark)​
Study Group VII​Definitions and Symbols​Mr. G. Gella (Spain)​
Study Group VIII​Alphabetic telegraph apparatus and local connecting lines​Mr. R.D. Kerr (Australia)​
Study Group IX​Quality of telegraph transmission, specification of channel equipments and directives for maintenance of telegraph channels​Mr. R. Roquet (France)​
Study Group X​Telegraph switching​Mr. Jansen (Netherlands)​
Study Group XI​Telephone signalling and switching​Mr. W.J.E. Tobin (United Kingdom)​
Study Group XII​Telephone transmission performance and local telephone networks​Mr. G. Swedenborg (Sweden)​
Study Group XIII​Semi-automatic and automatic telephone networks​Mr. M. Lambiotte (Belgium)​
Study Group XIV​Facsimile telegraph transmission and apparatus​Mr. W. Fijalkowski (Poland)​
Study Group XV​Transmission systems​Mr. F. Job (France)​
Study Group XVI​Telephone circuits​Mr. R.H. Franklin (United Kingdom)​
Study Group Special A​Data transmission​Mr. J. Rhodes (United Kingdom)​
Study Group Special B​World-wide semi-automatic and automatic network​Mr. W.E. Bloecker (United States)​
Study Group Special C​Noise (Joint CCITT/CCIR Study Group under the administration of CCITT)​Mr. H. Williams (United Kingdom)​
CMTT​Television transmission (Joint CCITT/CCIR Study Group under the administration of CCIR)​Mr. Y. Angel (France)​
RIT​Inter-American telecommunication network (Temporary Study Group;Joint CCITT/CCIR Study Group under the administration of CCITT)​Mr. C. Núñez (Mexico)​
PLAN​General plan for the development of the international network (Joint CCITT/CCIR Committee under the administration of CCITT)​Mr. Antinori (Italy)​
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Period 1965 - 1968

Study Group​ NameChairman
Study Group I​Telegraph operation and tariffs (telex service included)​Mr. R. Vargues (France)​
Study Group II​Telephone operation and tariffs​Mr. R. Rütschi (Switzerland)​
Study Group III​General tariff principles; lease of telecommunication circuits​Mr. P.F. Eriksen (Denmark)​
Study Group IV​Maintenance of lines, circuits and chains of circuits​Mr. J. Valloton (Switzerland)​
Study Group V​Protection against dangers and disturbances of electromagnetic origin​Mr. H. Riedel (F.R. of Germany)​
Study Group VI​Protection and specifications of cable sheaths and poles​Mr. H.L. Halström (Denmark)​
Study Group VII​Definitions and Symbols​Mr. G. Gella Iturriaga (Spain)​
Study Group VIII​Telegraph equipment and local connecting lines​Mr. Baggenstos (Switzerland)​
Study Group IX​Telegraph transmission quality; specification of channel equipment and rules for the maintenance of telegraph channels​Mr. P. Bassole (France)​
Study Group X​Telegraph switching​Mr. A. Jansen (Netherlands)​
Study Group XI​Telephone switching and signalling​Mr. W.J.E. Tobin (United Kingdom)​
Study Group XII​Telephone transmission performance and local telephone networks​Mr. F. Kroutl (Czechoslovakia)​
Study Group XIII​Automatic and semi-automatic telephone networks​Mr. M. Lambiotte (Belgium)​
Study Group XIV​Facsimile telegraph transmission and equipment​Mr. H. Bitter (F.R. of Germany)​
Study Group XV​Transmission systems​Mr. F. Job (France)​
Study Group XVI​Telephone circuits​Mr. R.H. Franklin (United Kingdom)​
Study Group Special A​Data transmission​Mr. J. Rhodes (United Kingdom)​
Study Group Special B​World-wide semi-automatic and automatic network​Mr. E.C. Laird (United States)​
Study Group Special C​Noise (Joint CCITT/CCIR Study Group under the administration of CCITT)​Mr. H. Williams (United Kingdom)​
CMTT​Television transmission (Joint CCITT/CCIR Study Group under the administration of CCIR)​Mr. Y. Angel (France)​
PLAN​General plan for the development of the international network (Joint CCITT/CCIR Committee under the administration of CCITT)​Mr. A. Bigi (Italy)​
AFRICA​Plan Committee for Africa (Joint CCITT/CCIR Study Group to be managed by CCITT)​Mr. M. Mili (Tunisia)​
ASIA​Plan Committee for Asia and Oceania (Joint CCITT/CCIR Study Group to be managed by CCITT)​Mr. C.P. Vasudevan (India)​
LATIN AMERICA​Plan Committee for Latin America (Joint CCITT/CCIR Study Group to be managed by CCITT)​Mr. C. Nuñez-A. (Mexico)​
EUROPE​Plan Committee for Europe and the Mediterranean Basin (Joint CCITT/CCIR Study Group to be managed by CCITT)​Mr. T. Noat (France)​

Special Autonomous Groups

GAS 1​National automatic networks​Mr. E.R. Banks (Australia)​
GAS 2​Local networks​Mr. Sundin (Sweden)​
GAS 3​Economic and technical comparison of transmission systems​Mr. M. Ben Abdellah (Morocco)​
GAS 4​Primary power sources​(Canada)​
GAS 5​Economic conditions and telecommunication development​Mr. Garbe (F.R. of Germany)​

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Period 1969 - 1972

Study GroupNameChairman
Study Group I​Telegraph operation and tariffs (telex service included)​Mr. A. Gomes (United States)​
Study Group II​Telephone operation and tariffs​Mr. R. Rütschi (Switzerland)​
Study Group III​General tariff principles; lease of telecommunication circuits​Mr. L. Burtz (France)​
Study Group IV​Transmission maintenance of international lines, circuits and chains of circuits​Mr. J. Valloton (Switzerland)​
Study Group V​Protection against dangers and disturbances of electromagnetic origin​Mr. H. Riedel (F.R. of Germany)​
Study Group VI​Protection and specifications of cable sheaths and poles​Mr. Walters (United Kingdom)​
Study Group VII​Definitions and Symbols​Mr. Ducommun (Switzerland)​
Study Group VIII​Telegraph equipment and local connecting lines​Mr. G.Baggenstos (Switzerland)​
Study Group IX​Telegraph transmission quality; specification of channel equipment and rules for the maintenance of telegraph channels​Mr. R. Brown (Australia)​
Study Group X​Telegraph switching​Mr. A. Jansen (Netherlands)​
Study Group XI​Telephone switching and signalling​Mr. A. Jouty (France)​
Study Group XII​Telephone transmission performance and local telephone networks​Mr. F. Kroutl (Czechoslovakia)​
Study Group XIII​Automatic and semi-automatic telephone networks​Mr. A. Newstead (Australia)​
Study Group XIV​Facsimile telegraph transmission and equipment​Mr. H. Bitter (F.R. of Germany)​
Study Group XV​Transmission systems​Mr. F. Job (France)​
Study Group XVI​Telephone circuits​Mr. J. Billen (United Kingdom)​
Study Group Special A​Data transmission​Mr. J. Rhodes (United Kingdom)​
Study Group Special C​Noise (Joint CCITT/CCIR Study Group administered by CCITT)​Mr. R. Kaiser (F.R of Germany)​
Study Group Special D​Pulse code modulation​Mr. R. Boyd (United States)​
CMTT​Television transmission (Joint CCITT/CCIR Study Group administered by CCITT)​Mr. Y. Angel (France)​
World Plan Committee​World-wide telecommunication plan (Joint CCITT/CCIR Study Group administered by CCITT)​Mr. A. Bigi (Italy)​
Africa Plan Committee​Telecommunication plan for Africa (Joint CCITT/CCIR Study Group administered by CCITT)​Mr. L. Dia (Senegal)​
Plan Committee for Asia and Oceania​Telecommunication plan for Asia and Oceania (Joint CCITT/CCIR Study Group administered by CCITT)​Mr. A. Zaidan (Saudi Arabia)​
Latin America Plan Committee​Telecommunication plan for Latin America (Joint CCITT/CCIR Study Group administered by CCITT)​Mr. C. Nuñez-A. (Mexico)​
Plan Committee for Europe and the Mediterranean Basin​Telecommunication plan for Europe and the Mediterranean Basin (Joint CCITT/CCIR Study Group administered by CCITT)​Mr. T. Noat (France)​

 Special Autonomous Groups

GAS 3​Economic and technical comparison of transmission systems​Mr. M. Aoud (Morocco)​
GAS 4​Primary power sources​Mr. F. Bentley (Canada)​
GAS 5​Economic conditions and telecommunication development​Mr. H. Longequeue (France)​
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Period 1973 - 1976

Study Group ​Name ​Chairman
Study Group I​Telegraph operation and tariffs (telex service included)​Mr. S.R.V. Paramor (United Kingdom)​
Study Group II​Telephone operation and tariffs​Mr. R. Rütschi (Switzerland)​
Study Group III​General tariff principles; lease of telecommunication circuits​Mr. L. Burtz (France)​
Study Group IV​Transmission maintenance of international lines, circuits and chains of circuits​Mr. J. Kiil (Denmark)​
Study Group V​Protection against dangers and disturbances of electromagnetic origin​Mr. H. Riedel (F.R. of Germany)​
Study Group VI​Protection and specifications of cable sheaths and poles​Mr. J.R. Walters (United Kingdom)​
Study Group VII​New networks for data transmission​Mr. V.C. MacDonald (Canada)​
Study Group VIII​Telegraph and data terminal equipment, local connecting lines​Mr. G. Baggenstos (Switzerland)​
Study Group IX​Telegraph transmission quality; specification of channel equipment and rules for the maintenance of telegraph channels​Mr. R. Brown (Australia)​
Study Group X​Telegraph switching​Mr. Ch. Jansen (Netherlands)​
Study Group XI​Telephone switching and signalling​Mr. J.S. Ryan (United States)​
Study Group XII​Telephone transmission performance and local telephone networks​Mr. F.T. Andrews (United States)​
Study Group XIII​Automatic and semi-automatic telephone networks​Mr. S. Kuhn (Poland)​
Study Group XIV​Facsimile telegraph transmission and equipment​Mr. M. Stephenson (United Kingdom)​
Study Group XV​Transmission systems​Mr. F. Job (France)​
Study Group XVI​Telephone circuits​Mr. S. Munday (United Kingdom)​
Study Group Special A​Data transmission​Mr. V.N. Vaughan (United States)​
Study Group Special C​Noise (Joint CCITT/CCIR Study Group administered by CCITT)​Mr. H. Wirz (F.R. of Germany)​
Study Group Special D​Pulse code modulation​Mr. Th. Irmer (F.R. of Germany)​
CMTT​Television transmission (Joint CCITT/CCIR Study Group administered by CCITT)​Mr. Y. Angel (France)​
CMV​Definitions and symbols (Joint CCITT/CCIR Study Group administered by CCITT)​Mr. R. Villeneuve​

Plan Committees (CCITT/CCIR Joint Committees administered by CCITT)

World Plan Committee​World-wide telecommunication plan​Mr. A. Bigi (Italy)​
Plan Committee for Africa​Telecommunication plan for Africa​Mr. L. Dia (Senegal)​
Plan Committee for Latin America​Telecommunication plan for Latin America​Mr. C. Nuñez-A. (Mexico)​
Plan Committee for Asia and Oceania​Telecommunication plan for Asia and Oceania​Mr. A. Zaidan (Saudi Arabia)​
Plan Committee for Europe and the Mediterranean​Basin Telecommunication plan for Europe and the Mediterranean Basin​Mr. M. Toutan (France)​

Special Autonomous Groups

GAS 3​Economic and technical comparison of transmission systems​Mr. M. Aoud (Morocco)​
GAS 5​Economic conditions and telecommunication development​Mr. H. Longequeue (France)​
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Period 1977 - 1980

Study Group​NameChairman
Study Group I​Telegraph operation and quality of service ​Mr. K. Freiburghaus (Switzerland)​
Study Group II ​Telephone operation and quality of service ​Mr. J. Biot (Belgium)​
Study Group III ​General tariff principles ​Mr. M. Kojima (Japan)​
Study Group IV ​Transmission maintenance of international lines, circuits and chains of circuits; maintenance of automatic and semi-automatic telephone networks ​Mr. J. Kiil (Denmark)​
Study Group V ​
Protection against dangers and disturbances of electromagnetic origin​
 Mr. G. Gratta (Italy) ​
Study Group VI ​Protection and specifications of cable sheaths and poles ​
Mr. J. Pritchett (United Kingdom)​
Study Group VII ​New networks for data transmission ​Mr. V.C. MacDonald (Canada)​
Study Group VIII ​Telegraph and data terminal equipment, local connecting lines ​
Mr. W. Staudinger (Germany, Fed. Rep. of)
Study Group IX ​Telegraph transmission quality; specification of channel equipment and rules for the maintenance of telegraph channels ​Mr. R. Brown (Australia)​
Study Group X ​Telegraph switching ​Mr. E.E. Daniels (United Kingdom)​
Study Group XI ​Telephone switching and signalling ​
Mr. J.S. Ryan (United States)
Study Group XII ​Telephone transmission performance and local telephone networks ​Mr. F.T. Andrews (United States)​
Study Group XIV ​Facsimile telegraph transmission and equipment ​
Mr. M. Blanc (France)
Study Group XV ​Transmission systems ​Mr. D. Gagliardi (Italy)​
Study Group XVI ​Telephone circuits  ​Mr. S. Munday (United Kingdom)​
Study Group XVII ​Data transmission ​
Mr. V.N. Vaughan (United States)
Study Group XVIII ​Digital networks ​Mr. Th. Irmer (Germany, Fed. Rep. of)​
CMBD​
Circuit noise and availability (Joint CCITT/CCIR Study Group administered by CCITT)​
Mr. A.P. Bolle (Netherlands)​
CMTT ​Television transmission (Joint CCITT/CCIR Study Group administered by CCITT) ​Mr. Y. Angel (France)​
CMV ​
Definitions and symbols (Joint CCITT/CCIR Study Group administered by CCITT) ​
Mr. R. Villeneuve (France)​

Plan Committees

World Plan Committee ​
World-wide telecommunication plan ​
Mr. M. Ghazal (Lebanon)​
Plan Committee for Africa ​Telecommunication plan for Africa ​Mr. L. Dia (Senegal)​
Plan Committee for Latin America ​Telecommunication plan for Latin America ​Mr. C. Nuñez-A. (Mexico)​
Plan Committee for Asia and Oceania ​Telecommunication plan for Asia and Oceania ​Mr. A. Zaidan (Saudi Arabia)​
Plan Committee for Europe and the Mediterranean Basin ​Telecommunication plan for Europe and the Mediterranean Basin ​
Mr. L. Terol Miller (Spain)

Special Autonomous Groups

GAS 3​
Economic and technical aspects of the choice of transmission systems  ​
Mr. G. Wallenstein (United States)​
GAS 5​Economic conditions and telecommunication development ​Mr. H. Longequeue (France)​
GAS 6​Economic and technical aspects of the choice of switching systems ​Mr. L. Ackzell (Sweden)​
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Period 1981 - 1984

Study Group​Name ​Chairman
Study Group I​ Definition and operational aspects of telegraph and telematic services (facsimile, Teletex, Videotex, etc.)​Mr. K. Freiburghaus (Switzerland)​
Study Group II ​Telephone operation and quality of service ​Mr. J. Biot (Belgium) ​
Study Group III​General tariff principles​Mr. M. Kojima (Japan)​
Study Group IV​Transmission maintenance of international lines, circuits and chains of circuits; maintenance of automatic and semi-automatic networks​Mr. J. Kiil (Denmark)​
Study Group V​Protection against dangers and disturbances of electromagnetic origin​Mr. G. Gratta (Italy)​
Study Group VI​Protection and specifications of cable sheaths and poles​Mr. K. Nikolski (USSR)​
Study Group VII​Data Communication networks​Mr. V.C. MacDonald (Canada)​
Study Group VIII​Terminal equipment for telematic services (facsimile, Teletex, Videotex, etc.)​Mr. W. Staudinger (Germany, Fed. Rep. of)​
Study Group IX​Telegraph networks and terminal equipment​Mr. E.E. Daniels (United Kingdom)​
Study Group XI​Telephone switching and signalling​Mr. J.S. Ryan (United States)​
Study Group XII ​Telephone transmission performance and local telephone networks ​Mr. P. Lorand (France) ​
Study Group XV ​Transmission systems​Mr. D. Gagliardi (Italy) 
Study Group XVI ​Telephone circuits​Mr. S. Munday (United Kingdom)​
Study Group XVII​Data communication over the telephone network   
Mr. V.N. Vaughan (United States)
Study Group XVIII​Digital networks​Mr. Th. Irmer (Germany, Fed. Rep. of)​
CMBD​Circuit noise and availability (Joint CCITT/CCIR Study Group)​Mr. A.P. Bolle (Netherlands)​
CMTT​Television and sound transmission (Joint CCIR/CCITT Study Group)​Mr. Y. Angel (France)​
CMV​Definitions and symbols (Joint CCIR/CCITT Study Group) ​Mr. M. Thué (France)​

Plan Committees (CCITT/CCIR Joint Committees administered by CCITT)

World Plan Committee​​General Plan for the development of the World Telecommunication Network​​Mr. M. Ghazal (Lebanon)​
Plan Committee for Africa​​General Plan for the development of the Regional Telecommunication Network in Africa​​Mr. L. Dia (Senegal)​
Plan Committee for Latin America​​General Plan for the development of the Regional Telecommunication Network in Latin America​​Mr. R.J.P. Severini (Argentina)​
Plan Committee for Asia and Oceania​​General Plan for the development of the Regional Telecommunication Network in Asia and Oceania​Mr. A.M. Al-Sabej (Kuwait)​
Plan Committee for Europe and the Mediterranean Basin​​Telecommunication plan for Europe and the Mediterranean Basin ​Mr. L. Terol Miller (Spain)​

Special Autonomous Groups

GAS 3Economic and technical aspects of the choice of transmission systemsMr. J.Z. Jacoby (United States)​
GAS 4Primary sources of energyMr. H. Krakowski (Germany, Fed. Rep. of)​
GAS 5Economic and social problems relating to telecommunication developmentMr. M. Benedetti (Italy) 
GAS 7Rural telecommunications ​Mr. C. Rudilosso (Italy)​
GAS 8Economic and technical impact of implementing a regional satellite network​Mr. G. Malleus (France)​
GAS 9​Economic and technical aspects of transition from an analogue to a digital telecommunication network ​Mr. L. Ackzell (Sweden)​
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Period 1985 - 1988

Study Group​ ​Name ​Chairman
Study Group I​Definition, operation and quality of service aspects of telegraph, data transmission and telematic services (facsimile, Teletex, Videotex, etc.)​Mr. M. Israel (Canada)​
Study Group II​Operation of telephone network and ISDN​Mr. G. Gosztony (Hungary)​
Study Group III​General tariff principles including accounting​Mr. B. Rouxeville (France)​
Study Group IV​Transmission maintenance of international lines, circuits and chains of circuits; maintenance of automatic and semi-automatic networks​Mr. H.L. Marchese (United States)​
Study Group V​Protection against dangers and disturbances of electromagnetic origin​Mr. G. Gratta (Italy)​
Study Group VI​Outside plant​Mr. K. Nikolski (USSR)​
Study Group VII​Data Communication networks​Mr. J.O. Wedlake (United Kingdom)​
Study Group VIII​Terminal equipment for telematic services (facsimile, Teletex, Videotex, etc.)​Mr. W. Staudinger (Germany, Fed. Rep. of)​
Study Group IX​Telegraph networks and terminal equipment​Mr. M. Matsubara (Japan)​
Study Group X​Languages and methods for telecommunications applications​Mr. C. Carelli (Italy)​
Study Group XI​ISDN and telephone network switching and signalling​Mr. J.S. Ryan (United States)​
Study Group XII​Transmission performance of telephone networks and terminals​Mr. P. Lorand (France)​
Study Group XV​Transmission systems​Mr. A.M. Nouri (Saudi Arabia)​
Study Group XVII​Data transmission over the telephone network​Mr. K. Kern (Germany, Fed. Rep of)​
Study Group XVIII​Digital networks including ISDN​Mr. H.K. Pfyffer (Switzerland)​
Special Study Group “S”​CCITT Study Groups structure​Mr. W.G. Simpson (United Kingdom)​
PC/WATTC-88​Preparatory Committee WATTC-88​Mr. F. Molina Negro (Spain)​
CMTT​Television and sound transmission (Joint CCIR/CCITT Study Group)​Mr. Y. Angel (France)​
CMV​Definitions and symbols (Joint CCIR/CCITT Study Group)​Mr. M. Thué (France)​

Plan Committees (CCITT/CCIR Joint Committees administered by CCITT)

World Plan Committee​General Plan for the development of the International Telecommunication Network​Mr. C. Crump (United States)​
Plan Committee for Africa​General Plan for the development of the Regional Telecommunication Network in Africa​Mr. E. Kamdem Kamga (Cameroon)​
Plan Committee for Latin America​General Plan for the development of the Regional Telecommunication Network in Latin America​Mr. C. Romero Sanjines (Peru)​
Plan Committee for Asia and Oceania​General Plan for the development of the Regional Telecommunication Network in Asia and Oceania​Mr. A.M. Al-Sabej (Kuwait)​
Plan Committee for Europe and the Mediterranean Basin​General Plan for the development of the Regional Telecommunication Network in Europe and the Mediterranean Basin​Mr. L. Terol Miller (Spain)​

Special Autonomous Groups

GAS 3​Economic and technical aspects of the choice of transmission systems​Mr. J.Z. Jacoby (United States)​
GAS 7​Rural telecommunications​Mr. C. Rudilosso (Italy)​
GAS 9​Economic and technical aspects of transition from an analogue to a digital telecommunication network​Mr. M. Ghazal (Lebanon)​
GAS 10​Planning data and forecasting methods​Mr. A. Zolfaghari (Isl. Rep. of Iran)​
GAS 11​Strategy for public data networks​Mr. J.B. Pécresse (France)​
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Period 1989 - 1992

Study Group​Name ​Chairman
Study Group I​Services​Mr. M. Israel (Canada)​
Study Group II​Network operation​Mr. G. Gosztony (Hungary)​
Study Group III​Tariff and accounting principles​Mr. B. Rouxeville (France)​
Study Group IV​Maintenance​Mr. J. Shrimpton (United States)​
Study Group V​Protection against electromagnetic effects​Mr. H. Lorke (German Democratic Rep.)​
Study Group VI​Outside plant​Mr. K. Nikolski (USSR)​
Study Group VII​Data Communication networks​Mr. J.O. Wedlake (United Kingdom)​
Study Group VIII​Terminals for telematic services​Mr. W. Staudinger (Germany, Fed. Rep. of)​
Study Group IX​Telegraph networks and telegraph terminal equipment​Mr. M. Matsubara (Japan)​
Study Group X​Languages for telecommunication applications​Mr. C. Carelli (Italy)​
Study Group XI​Switching and signalling​Mr. J.S. Ryan (United States)​
Study Group XII​Transmission performance of telephone networks and terminals​Mr. P. Lorand (France)​
Study Group XV​Transmission systems and equipments​Mr. A.M. Nouri (Saudi Arabia)​
Study Group XVII​Data transmission over the telephone network​Mr. K. Kern (Germany, Fed. Rep. of)​
Study Group XVIII​ISDN​Mr. H.K. Pfyffer (Switzerland)​
CMTT​Television and sound transmission (Joint CCIR/CCITT Study Group)​Mr. W.G. Simpson (United Kingdom)​

Plan Committees (CCITT/CCIR Joint Committees administered by CCITT)

World Plan Committee​General Plan for the development of the International Telecommunication Network​Mr. C. Crump (United States)
Mr. L. Terol Miller (Spain)
Chairman designate​
Plan Committee for Africa​General Plan for the development of the Regional Telecommunication Network in Africa​Mr. E. Kamdem Kamga (Cameroon)​
Plan Committee for Latin America​General Plan for the development of the Regional Telecommunication Network in Latin America​Mr. A.F. Garcia (Argentina)​
Plan Committee for Asia and Oceania​General Plan for the development of the Regional Telecommunication Network in Asia and Oceania​Mr. J.L. Parapak (Indonesia)​
Plan Committee for Europe and the Mediterranean Basin​General Plan for the development of the Regional Telecommunication Network in Europe and the Mediterranean Basin​Mr. L. Terol Miller (Spain)​

Special Autonomous Groups

GAS 7​Rural telecommunications​Mr. C. Rudilosso (Italy)​
GAS 9​Economic and technical aspects of transition from an analogue to a digital network​Mr. M. Ghazal (Lebanon)​
GAS 12​Strategy for the introduction of new non-voice telecommunication services​Mr. J.B. Pécresse (France)​
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Period 1993 - 1996

Study Group​Name ​Chairman
Study Group 1 ​Service definition ​Mr. M. Israel (Canada)​
Study Group 2 ​Network operation ​Mr. G. Gosztony (Hungary)​
Study Group 3​Tariff and accounting principles ​Mr. B. Rouxeville (France)​
Study Group 4​Network maintenance ​Mr. J. Shrimpton (United States)​
Study Group 5 ​Protection against electromagnetic environment effects ​Mr. G. Meineri (Italy)​
Study Group 6 ​Outside plant ​Mr. K. Nikolski (Russian Federation)​
Study Group 7 ​Data networks and open system communications  ​Mr. H. Bertine (United States)​
Study Group 8 ​Study Group 8 Terminals for telematic services ​Mr. W. Staudinger (Germany, Fed. Rep. of)​
Study Group 9​Television and sound transmission (former CMTT) ​Mr. J.L. Tejerina (Spain) ​
Study Group 10 ​Languages for telecommunication applications ​Mr. O.F. Faergemand (Denmark)​
Study Group 11 ​Switching and signalling ​Mr. S. Kano (Japan)​
Study Group 12 ​End-to-end transmission performance of networks and terminals ​Mr. P. Lorand (France)​
Study Group 13 ​General network aspects ​Mr. B.W. Moore (United Kingdom)​
Study Group 14 ​Modems and transmission techniques for data, telegraph and telematic services ​Mr. K. Kern (Germany)​
Study Group 15 ​Transmission systems and equipments ​Mr. P.A. Probst (Switzerland)
TSAG ​Telecommunication Standardization Advisory Group ​Mr. B. Horton (Australia)​
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Period 1997 - 2000

Study Group​Name ​Chairman
Study Group 2​Network and service operation ​Mr. G. Gosztony (Hungary)​
Study Group 3 ​Tariff and accounting principles including related telecommunications economic and policy issues ​Mr. T. Matsudaira (Japan)​
Study Group 4 ​TMN and network maintenance ​Mr. D. Sidor (United States)​
Study Group 5​Protection against electromagnetic environment effects ​Mr. G. Meineri (Italy)​
Study Group 6 ​
Outside plant ​
Mr. Molleda (1997-1999) (Spain)

Mr. J. R. Osterfield (2000) (United Kingdom)
Study Group 7 ​Data networks and open system communications ​Mr. H. Bertine (United States)​
Study Group 8 ​Characteristics of telematic systems ​Mr. W. Staudinger (Germany)​
Study Group 9 ​Television and sound transmission  ​Mr. J.L. Tejerina (Spain)​
Study Group 10 ​Languages and general software aspects for telecommunication systems  ​Mr. A. Sarma (Germany)​
Study Group 11 ​Signalling requirements and protocols ​Mr. S. Kano (Japan)​
Study Group 12 ​
End-to-end transmission performance of networks and terminals ​
Mr. M. Cao (1997-1999) (China)

Mr. C.A Dvorak (2000) (United States)
Study Group 13 ​General network aspects ​Mr. B.W. Moore (United Kingdom)​
Study Group 15 ​Transport networks, systems and equipment ​Mr. P. Wery (Canada)​
Study Group 16 ​Multimedia services and systems ​Mr. P.A. Probst (Switzerland)​
TSAG ​Telecommunication Standardization Advisory Group ​Mr. G. Fishman (United States)​
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Period 2001 - 2004

Study Group​Name ​Chairman
Study Group 2 ​Operational aspects of service provision, networks and performance ​Mr. R. Blane (2001-2002) (United Kingdom)

Mr. Ph. Distler (2003-2004) (France)​
Study Group 3 ​Tariff and accounting principles including related telecommunication economic and policy issues ​Mr. R. Thwaites (Australia)​
Study Group 4 ​Telecommunication management, including TMN ​Mr. D.J. Sidor (United States)​
Study Group 5 ​Protection against electromagnetic environment effects ​Mr. R. Pomponi (Italy)​
Study Group 6 ​Outside plant ​Mr. F. Montalti (Italy)​
Study Group 7
(until 16/9/2001) ​
Data networks and open system communications ​Mr. H. Bertine (United States)​
Study Group 8 ​Characteristics of telematic systems ​Mr. W. Staudinger (Germany)​
Study Group 9 ​Integrated broadband cable networks and television and sound transmission  ​Mr. R. Green (United States)​
Study Group 10
(until 16/9/2001) ​
Languages and general software aspects for telecommunication systems ​Mr. A. Sarma (Germany)​
Study Group 11 ​Signalling requirements and protocols ​Mr. Y. Hiramatsu (Japan)​
Study Group 12 ​End-to-end transmission performance of networks and terminals ​Mr. J-Y. Monfort (France)​
Study Group 13 ​Multi-protocol and IP-based networks and their internetworking ​Mr. B.W. Moore (United Kingdom)​
Study Group 15 ​Optical and other transport networks ​Mr. P. Wery (Canada)​
Study Group 16 ​Multimedia services, systems and terminals ​Mr. P.-A. Probst (Switzerland)​
Study Group 17
(as from 17/9/2001) ​
Data networks and telecommunication software
(Merger of Study Group 7 and Study Group 10) ​
Co-Chairmen:
​Mr. H. Bertine (United States)
Mr. A. Samra (Germany)
Special Study Group ​IMT-2000 and beyond ​Mr. J. Visser (Canada)​
TSAG ​Telecommunication Standardization Advisory Group ​Mr. G. Fishman (United States)​
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Period 2005 - 2008

Study Group​Name ​Chairman
Study Group 2 ​Operational aspects of service provision, networks and performance ​Ms. Marie-Thérèse Alajouanine (France)​
Study Group 3 ​Tariff and accounting principles including related telecommunication economic and policy issues ​Mr. K.S. Park (Korea, Rep. of)​
Study Group 4 ​Telecommunication management ​Mr. D. Sidor (United States)​
Study Group 5 ​Protection against electromagnetic environment effects ​Mr. R. Pomponi (Italy)​
Study Group 6 ​Outside plant and related indoor installations ​Mr. F. Montalti (Italy)​
Study Group 9 ​Integrated broadband cable networks and television and sound transmission  ​Mr. R. Green (United States)​
Study Group 11 ​Signalling requirements and protocols ​Mr. Y. Hiramatsu (Japan)​
Study Group 12 ​Performance and quality of service ​Mr. J-Y. Monfort (France)​
Study Group 13 ​Next generation networks ​Mr. B.W. Moore (United Kingdom)​
Study Group 15 ​Optical and other transport network infrastructures ​Mr. Y. Maeda (Japan)​
Study Group 16 ​Multimedia terminals, systems and applications ​Mr. P.-A. Probst (Switzerland)​
Study Group 17 ​Security, languages and telecommunication software ​Mr. H. Bertine (United States)​
Study Group 19 ​Mobile telecommunication networks ​Mr. J. Visser (Canada)​
TSAG ​Telecommunication Standardization Advisory Group ​Mr. G. Fishman (United States)​
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Period 2009 - 2012

Study Group​Name ​Chairman
Study Group 2  ​Operational aspects of service provision and telecommunication management​Ms. Marie-Thérèse Alajouanine (France)​
Study Group 3 ​Tariff and accounting principles including related telecommunication economic and policy issues ​Mr. Ki-Shik Park (Korea, Rep. of)​
Study Group 5 ​Protection against electromagnetic environment effects ​Mr. Ahmed Zeddam (France)​
Study Group 9Television and sound transmission and integrated broadband cable networksMr. Charles Sandbank (2009)(United Kingdom)

Mr. Arthur Webster (2009-2012) (United States)
Study Group 11 ​Signalling requirements, protocols and test specifications ​Mr. Wei Feng (China)​
Study Group 12 ​Performance, QoS and QoE ​Mr. Charles A. Dvorak
(United States)​
Study Group 13 ​Future networks including mobile and NGN ​Mr. Chae-Sub Lee (Korea, Rep. of)​
Study Group 15 ​Optical transport networks and access network infrastructures ​Mr. Yoichi Maeda (Japan)​
Study Group 16 ​Multimedia coding, systems and applications ​Mr. Yushi Naito (Japan)​
Study Group 17 ​Security ​Mr. Arkadiy Kremer
(Russian Federation)​
TSAG ​Telecommunication Standardization Advisory Group ​Mr. John Visser (2009) (Canada)

Mr. Bruce Gracie (2010-2012)(Canada)​ ​
SG3RG-AFR ​
Study Group 3 – Regional Group for Africa ​Mr. Abossé Akue-Kpakpo (Togo)
Mr. Modibo Traore (Mali)​
SG3RG-AO​Study Group 3 – Regional Group for Asia and Oceania ​Mr. Byoung Nam Lee (Korea, Rep. of)​
SG3RG-LAC ​Study Group 3 – Regional Group for Latin AmericaMr. Facundo Fernández Begni (Argentina)​
SCV ​Standardization Committee for Vocabulary ​Mr. Nabil Kisrawi (2009-2011)(Syrian Arab Republic)

Ms. Marie-Thérèse Alajouanine (2011-2012) (France)
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Period 2013 - 2016

Study Group​Name ​Chairman
Study Group 2  ​Operational aspects of service provision and telecommunication management​Ms. Sherif Guinena (Egypt)​
Study Group 3 ​Tariff and accounting principles including related telecommunication economic and policy issues ​Mr. Seiichi Tsugawa  (Japan)​
Study Group 5 ​Environment and climate changeMr. Ahmed Zeddam (France)​
Study Group 9Broadband cable and TVMr. Arthur Webster (2009-2012) (United States)
Study Group 11 ​Signalling requirements, protocols and test specifications ​Mr. Wei Feng (China)​
Study Group 12 ​Performance, QoS and QoE ​Mr. Kwame Baah-Acheamfuor (Ghana)​
Study Group 13 ​Future networks including cloud computing, mobile and next-generation networks​Mr. Chae-Sub Lee (Korea, Rep. of)​
Study Group 15 ​Networks, Technologies and Infrastructures for Transport, Access and Home​Mr. Steve Trowbridge (United States)​
Study Group 16 ​Multimedia coding, systems and applications ​Mr. Yushi Naito (Japan)​
Study Group 17 ​Security ​Mr. Arkadiy Kremer
(Russian Federation)​
Study Group 20 ​Internet of Things (IoT) and its applications including smart cities and communities (SC&C) [established by TSAG in June 2015]​Nasser Al Marzouqi (United Arab Emirates)​
TSAG ​Telecommunication Standardization Advisory Group ​Mr. Bruce Gracie (Canada)​
SG3RG-AFR ​
Study Group 3 – Regional Group for Africa ​Mr. Abossé Akue-Kpakpo (Togo)
Mr. Saliou Toure (Senegal)​
SG3RG-AO​Study Group 3 – Regional Group for Asia and OceaniaMr. Byoung Nam Lee (Korea, Rep. of)​
SG3RG-LAC ​Study Group 3 – Regional Group for Latin America ​Mr. Tito Lopez (Paraguay)​
SCV ​Standardization Committee for Vocabulary ​Mr. Imad Hoballah (Lebanon)
Review Committee​Review CommitteeMr. Yoichi Maeda (Japan)​
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Period 2017 - 2020

Study Group​Name ​Chairman
Study Group 2  ​Operational aspects of service provision and telecommunications managementPhil Rushton (United Kingdom)​
Study Group 3 ​Tariff and accounting principles including related telecommunication economic and policy issues ​Seiichi Tsugawa  (Japan)​
Study Group 5 ​Environment and climate change​Maria Victoria Sukenik (Argentina)​
Study Group 9Broadband cable and TVSatoshi Miyaji (Japan)
Study Group 11 ​Signalling requirements, protocols and test specifications ​Andrey Kucheryavy (Russian Federation)​
Study Group 12 ​Performance, QoS and QoE ​Kwame Baah-Acheamfuor (Ghana)​
Study Group 13 ​Future networks including cloud computing, mobile and next-generation networks​Leo Lehmann (Switzerland)​
Study Group 15 ​Networks, Technologies and Infrastructures for Transport, Access and Home​Steve Trowbridge (United States)​
Study Group 16 ​Multimedia coding, systems and applications ​Zhong Luo (China)​
Study Group 17 ​Security ​Heung Youl Youm (Korea (Rep. of)​
Study Group 20 ​Internet of Things (IoT) and its applications including smart cities and communities (SC&C)​Nasser Al Marzouqi (United Arab Emirates)​
TSAG ​Telecommunication Standardization Advisory Group ​Bruce Gracie (Canada)​
SCV ​Standardization Committee for Vocabulary ​Tong Wu (China)
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