GSM terminology nd some of the ICT (Information, Communication nd Technology) abbreviation words and their full meanings. Some of the abbreviation words are. GSM: Global system for mobile communication. â€¢3G phones: Third Generation phones. â€¢CDMA: Code Division Multiple Access Line. â€¢SIM: Subscribers identity Module. â€¢MCC: Mobile Country Code. â€¢MNC: Mobile Network Code. â€¢IMEI: International Mobile Equipment Identity. â€¢UASL: Unified Access Service license. â€¢ICC: International Card Configuration. â€¢LCD: Liquid Crystal Display (screen). â€¢BUZZER: Ringer of a phone. â€¢ICT: Information communication and Technology. â€¢SNO: Second National Operator. â€¢TCP: Telecom Consumer Parliament. â€¢NCA: Nigeria Communication Act. â€¢NIGCOMSAT: Nigeria Communication Satellites. â€¢IC: Integrated Circuit (meaning that it has so many component).