HSCSD
High Speed Circuit Switched Data
High Speed Circuit Switched Data enhances the capabilities of the current GSM network by combining time slots on the GSM radio carrier. Data rates of 14.4Kbps, using one timeslot, 28.8Kbps using two time slots, or 57.6Kbps using four time slots can be achieved. HSCSD is best suited for services such as video conferencing.