Main activity of Hrvatski Telekom d.d. (Croatian Telecom Inc.) and other subsidiary companies is the provision of telecommunications services, design and construction of communications networks on the Croatian territory. The Group also provides fixed telephone line service (access and traffic through fixed telephone lines and additional fixed network), Internet services including IPTV, data transmission services (lease of lines, Metro-Ethernet, IP / MPLS, ATM) and operates GSM and UMTS mobile telephone networks.