History of International Telephony Standards
Succinct:
1865: ITU
1927: CCIR, CCIF, CCIT
1934: ITU name meaning changed
1947: +UN.
1956: CCIF + CCIT = CCITT
1992: ITU-R, ITU-D, CCITTITU-T
Detailed:
1865: International Telegraph Union (ITU)
1927: three subcommittees: the Consultative Committee for International Radio (CCIR), the Consultative Committee for International Telephone (CCIF), and the Consultative Committee for International Telegraph (CCIT)
1934: the International Telegraph Union changed its name to the present-day meaning—the ITU. By this time the ITU covered all forms of wireline and wireless communication.
1947: the ITU became a United Nations (UN) specialized agency.
1956: the CCIF and CCIT were combined and became the CCITT—the Consultative Committee for International Telegraph and Telephone.
1992: three sectors corresponding to its three main areas of activity: telecommunication standardization (ITU-T), radio communication (ITU-R), and telecommunication development (ITU-D). The CCITT that had been established in 1956 as part of the ITU ceased to exist and became the ITU-T.
Note: The ITU-T continues to refine and develop international standards for SS7 protocols, intelligent networks, and bearer/signaling transport over IP.
Regional Standards
ETSI
3GPP:
for WCDMA
The current organization partners are Association of Radio Industries and Businesses (ARIB—Japan), China Wireless Telecommunication Standards group (CWTS—China), European Telecommunications Standards Institute (ETSI—Europe), Committee T1 (North America), Telecommunications Technology Association (TTA—Korea), and Telecommunication Technology Committee (TTC—Japan). The Telecommunications Industry Association (TIA—North America) is an observer to 3GPP.
The scope of 3GPP was subsequently amended to include the maintenance and development of the Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), and Enhanced Data rates for GSM Evolution (EDGE). Previously, it focused only on developing standards for third-generation mobile systems.
3GPP2:
for CDMA2000