TDC A/S provides telecommunications solutions primarily in Denmark and other Nordic countries. It offers landline telephony services; mobile services; convergence products; data communications and Internet services, comprising broadband solutions; and terminal equipment and leased lines, including fiber access. The company also provides mobile telephony services as Web-based self-services; Internet access, including dial-up service; and other value-added services, such as voice over Internet protocol services. In addition, TDC provides network services on a wholesale basis to service providers, which include voice, SMS, and data-transmission access. Further, the company offers cable-TV services, TV over IP, video on demand, and mobile TV, as well as provides cable-modem provisioning and network management control servers for IP products. It provides its business customers with high-speed Internet access; data transport services, including leased lines; ATM and frame relay services; virtual private networks; and Web hosting. The company was founded in 1990 and is headquartered in Copenhagen, Denmark. TDC A/S is a subsidiary of Nordic Telephone Company ApS.