Telstra is Australia’s largest telecommunications company, with dominant market shares in voice, mobile, enterprise telecom, and fixed-line broadband resale via the national broadband network. The former government monopoly provides most of its services via its infrastructure assets, such as a fixed-line network (data centers, exchanges, poles, ducts, pits and pipes, fiber network), a mobile network, and mobile towers. Its customers span retail, corporate, government, wholesale, and overseas segments. Telstra also provides the government-owned, last-mile fixed-line National Broadband Network with long-term access to its infrastructure, in return for recurring payments. Finally, Telstra operates a leading telecom operation in Papua New Guinea and the surrounding South-Pacific countries.