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This article focuses on voice communications using mobile (cell) phones over mobile/cellular networks. The advances in processors, memory, signal processing, communication technologies, and several related techniques, personal mobile communications has witnessed tremendous growth. A typical mobile communication network consists of: mobile devices, BS, mobile switching centers, gateway mobile switching center. Cell phones communicate wirelessly with BSs. Base stations communicate with MSCs on fiber-optic cables or microwave links. Some of the extensions are also made in the cell phone, MMS, JPEG format, MPEG format, graphics, and animation.
Date of Publication: Dec. 2005