UMA
Unlicensed Mobile Access
Unlicensed Mobile Access is an industry collaboration to extend GSM and GPRS services into customer sites by utilizing unlicensed radio technologies such as WiFi (Wireless Fidelity) and Bluetooth. This is achieved by tunnelling GSM and GPRS protocols through a broadband IP network towards the Access Point situated in the customer site and across the unlicensed radio link to the mobile device. Although the title UMA is often still used, the technology is now termed GAN and has seen relatively limited deployment.