GSA co-operates with and supports other key organisations including:

• APT IMT-2000 Forum http://www.aptsec.org
• Cellular Operators Association of India (COAI) http://www.coai.com
• European Telecommunications Standards Institute (ETSI) http://www.etsi.org
• European Commission http://www.europa.eu.int/index_en.htm
• GSM Association http://www.gsmworld.com
• Infocommunication Services Market Participants Union (ICU) http://www.icu.org.ru
• International Telecommunication Union http://www.itu.int/home/
• ITESAP http://www.itesap.com
• 3GPP http://www.3gpp.org/