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In addition, the Unison system was the only one that allowed for a painless upgrade from GSM to UMTS. Contains heavily revised sections on the evolution from GSM to UMTS Multi-access, the UMTS Radio Access Network, the UMTS Core Network and services. Optimi allows wireless carriers to rapidly migrate from GSM to UMTS, better manage hybrid voice/data mobile networks as well as enabling carriers to more efficiently integrate merged networks. |
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