The designing office of Telekomunikacija Ltd company is responsible for developing preliminary projects and main projects for local and regional telephone networks (of trunk and international levels), trunk and distributive gas pipelines, metering and regulating stations, domestic gas connections, internal gas installations for industrial and individual consumers as well as designs for water mains and sewerage systems.

Using the latest software packages, design bureau Telekomunikacija Ltd company, also provides services of creating as-built plans/drawings, feasibility studies and technical control of projects.