Slovenian mobile operator Tus Mobil and Nokia Siemens Networks (NSN) have signed a contract to upgrade and expand the fledgling cellco’s GSM network by deploying 400 of NSN’s 3.5G HSPA-enabled base stations and MSC Server mobile softswitch. According to a press release, the upgrade will improve network efficiency and coverage, allowing Tus to offer new services to its customers, including high speed mobile data applications and multimedia content such as mobile TV. The network is due to be ready for commercial launch by the end of the year. The contract marks an extension of the partnership between domestically owned Tus Mobil and NSN dating back to 2006, when the Finnish technology giant was chosen as GSM/EDGE core and radio network supplier. According to TeleGeography’s GlobalComms database, Tus launched commercial services over its own GSM network at the end of October 2007, and was awarded Slovenia’s fourth 3G mobile licence free of charge earlier this month, after no other interested parties came forward.