The company is responsible for maintaining and expanding Iran's telecom network and providing all the necessary hardware and software in this field. Telecommunication Network Planning and Development Company, renamed to Telecommunication Infrastructure Company Optical Fiber and Solar Cell Fabrication Company Shahid Ghandi Communication Cables Co. Data Communications of Iran (DCI) - DCI maintains the network infrastructure, providing Internet access via the IRANPAK X.25 packet-switching network, which covers most major cities.