Carmel-based Verizon Authorized Retailer Round Room LLC has acquired Wireless Advantage, which includes 45 locations in markets throughout the southeastern United States. The deal expands Round Room's footprint to more than 1,200 stores in 43 states. Wireless Advantage was founded in 2001 in Alabama. The company and its employees will move forward under the TCC banner, with back-office support staff moving to Round Room's headquarters in Carmel.