PT Ketrosden Triasmitra, through its subsidiaries, operates as a telecommunication infrastructure company in Indonesia. The company operates through Construction Services and Sales of Fiber Optic Cable System; and Maintenance and Manage Services of Fiber Optic Cable System segments. It also provides cable management and maintenance services, as well as sells submarine and terrestrial fiber optic cable systems. In addition, the company offers construction of electrical and telecommunication line services. The company was founded in 1994 and is based in Jakarta Timur, Indonesia. PT Ketrosden Triasmitra operates as a subsidiary of Pt Fajar Sejahtera Mandiri Nusantara.