Total Access Communication Public Company Limited, commonly known as dtac, is the third-largest GSM mobile phone provider in Thailand after AIS and True. dtac is owned by Telenor both directly and indirectly, and both companies share the same logo. The Company was established as a limited company in August 1989 by Bencharongkul family to provide wireless telecommunications services under a “Build-Transfer-Operate” concession granted by CAT Telecom Public Company Limited. In 2012, dtac Trinet, a subsidiary of the Company, obtained the spectrum license for mobile telecommunications in the Frequency Band 2.1 GHz from the National Broadcasting and Telecommunications Commission (NBTC) and provides service on 2.1GHz in 2013. dtac Business department has been working and supporting thousands of businesses and entrepreneurs ranging from small, medium, to corporate enterprises to simplify their mobile and communication solutions with wide breadth of connectivity solutions. This enables them to focus on driving to grow their business and less worry about connectivity issues as well as digitise their business processes to promote their productivity and competitiveness.