The Universal Mobile Telecommunications System (Scots: Universal Mobile Telecommunications Seestem UMTS) is a third generation mobile cellular seestem for networks based on the GSM staundart. Developed an mainteened bi the 3GPP (3rd Generation Partnership Project), UMTS is a component o the Internaitional Telecommunications Union IMT-2000 staundart set an compares wi the CDMA2000 staundart set for networks based on the competin cdmaOne technology.