Viettel is Vietnam’s largest mobile network operator. It is a state-owned enterprise wholly-owned and operated by the Ministry of Defence.
As of 2014, Viettel had 80,000 employees inside and outside the country, and served 63 million subscribers.
Viettel had a market share (estimated based on revenues) of 40.67% in 2012. Its main competitors are Vinaphone (owned by VNPT) with 30% market share and MobiFone with 17.9%. They control almost 90% of the market, with the rest controlled by Vietnamobile with 8%, Gmobile (formerly Beeline) with 3.2% and S-Fone with 0.1%. Viettel reported having 58.9 million customers, while Vinaphone and MobiFone estimated to have 70 million and Gmobile and Vietnamobile 10 million.
Viettel need a solution for calibration of Bird Site Analyzer, which are using to maintain the BTS (base transceiver station). KEDAK as official partner did support Viettel to build this system successfully with support from TESEQ Germany.