Enhanced Circuit-Switched Data (ECSD) is an upgrade of a GSM network. The EDGE is presented on top of the High-Speed Circuit-Switched Data (HSCSD) administration. It is utilized to convey information in circuit-switched mode on a few schedule openings. ECSD will improve the information rates of HSCSD through the presentation of another modulation scheme (8-PSK) and the presentation of new error correction schemes. ECSD works with a versatile change of the information rate as per the transmission quality.