AIS has awarded a contract to Nokia Siemens Networks (NSN) to roll out its 3G network in the 2100 MHz band. Based on the terms of the contract, NSN will supply its Flexi multi-radio base station and evolved packet core solutions. It will also provide operating support system solutions, NetAct multi-technology, multi-vendor network management system, Flexi NG 3.0 (Network Gateway), and Flexi NS 3.0 (Network Server).