1.Development, production, operation, maintenance and consignment of telecommunications systems, and software and various equipment related to those systems 2.Sales and leasing of telecommunications systems, and software and various equipment related to those systems 3.Telecommunications business based on Telecommunications Business Law 4.Contracting for electrical and telecommunications installations 5.Sales and agency business for telecommunications equipment and various telecommunications networking services 6.Services of information data processing and provision Production and sales of contents such as audio, visual and text media to be provided through telecommunications networks 7.Planning, surveys, research, training and consulting on consignments for the above business areas