A CDE Definition
generic access method
(Generic Access Method) A standard for roaming between GSM cellular networks and wireless local networks (Wi-Fi LANs) from the 3GPP. Previously known as "Unified Mobile Access" (UMA), it allows dual-mode handsets to seamlessly switch between networks. GAN networks enable cellphones to obtain service inside buildings that might otherwise be difficult. See dual-mode handset and cellular generations.
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