High Speed Circuit Switched Data (HSCSD) is an enhancement of data services ("Circuit Switched Data - CSD) over all GSM (2G) networks. It allows you to access nonvoice services at 3 or more times the rate normally associated with 2G, which means subscribers are able to send and receive data from their portable computers at a speed of up to 43.2 kbps on fully deployed networks.

The HSCSD solution enables higher rates by using multiple channels, allowing subscribers to enjoy faster rates for their Internet, e-mail, calendar and file transfer services.