IMT2000

IMT-2000 (International Mobile Telecommunications-2000) is the global standard for third generation (3G) wireless communications as defined by the International Telecommunication Union.

In 1999 ITU approved five radio interfaces for IMT-2000 as a part of the ITU-R M.1457 Recommendation. The five standards are:

IMT-2000 CDMA Direct Spread
- also known as W-CDMA, used in UMTS and the successor to GSM
IMT-2000 CDMA Multi-Carrier
- also known as CDMA2000, the successor to 2G CDMA (IS-95)
IMT-2000 CDMA TDD
- also known as TD-SCDMA
IMT-2000 TDMA Single Carrier
- also known as EDGE, an intermediate 2.5G technology
IMT-2000 FDMA/TDMA
- also known as DECT

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