A collaboration that brings together a number of national standards parties to develop 3G mobile systems based on evolved Global System for Mobile Communication (GSM) core technologies and standards.The scope includes maintenance and development of General Packet Radio Service (GPRS), Enhanced Data rates for GSM Evolution (EDGE), and Universal Mobile Telecommunications System (UMTS). For contact information, see Appendix A. See also 3G, EDGE, GPRS, GSM, standards, and UMTS.