Telstra Corporation Limited (known as Telstra) is Australias largest telecommunications and media company which builds and operates telecommunications networks and markets voice, mobile, internet access, pay television and other entertainment products and services. Telstra has a long history in Australia, originating together with Australia Post as a government department, the Postmaster-Generals Department. Telstra is now fully privatised and has been undergoing a change program to become more customer focused under its recent CEO, David Thodey. New CEO Andy Penn is expected to increase the focus on growth in international markets. The federal governments National Broadband Network (NBN) is causing changes to the industry and will see the company progressively sell its copper and HFC networks to NBN Co.