| European Telecommunication Standards Institute ETSI |
| http://www.etsi.org |
| International Organization for Standardization ISO |
| http://www.iso.org/iso/en/ISOOnline.frontpage |
| International Telecommunication Union ITU |
| http://www.itu.int/home/index.html |
| GSM Association |
| http://www.gsmworld.com/about/index.shtml |
| Telecommunication new in MENA Region visit |
| http://www.menafn.com |