PT Ketrosden Triasmitra specializes in telecommunications network infrastructure, focusing on the development and marketing of fiber optic communication networks. In addition to building these systems, the company provides various managed services, comprehensive cable management, and ongoing maintenance. Their offerings also extend to the distribution of both undersea (submarine) and land-based (terrestrial) fiber optic cable systems. Furthermore, the company undertakes general construction projects. Established in 1994, PT Ketrosden Triasmitra is headquartered in Jakarta Timur, Indonesia, and operates as a subsidiary of Pt Fajar Sejahtera Mandiri Nusantara.