DSC 3 : Digital Selective Calling, being a technique using digital codes, which enables a radio station to establish contact with another station or group of stations
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}