south west and central Pacific, south-east Asia, and north Asia. Radio Australia also carried more news coverage, with special broadcasts during the 1987 Fijian coups d'état, Tiananmen Square massacre and the Gulf War. A government initiative undertaken in 1987 known as the Second Regional Radio Network established nineteen new studios in regional areas (with an additional sixteen upgraded), as well as approximately 300 additional transmitters. At the same time, Radio National and ABC-FM were expanded into these areas. In August 1988, the Parliamentary Broadcast Network (PBN) was established under the National Metropolitan Radio Plan, as a dedicated station to carry the ABC's mandatory Parliamentary broadcasts on AM transmitters in each state capital as well as Newcastle and Canberra. 1990s Increasing pressure throughout the 1980s led the ABC to divest its orchestras in 1990. They formed Symphony Australia, an umbrella organisation that coordinates the now independent state-based orchestras (still owned by the ABC). The Sydney Symphony Orchestra was the first to be corporatised in 1996 when Sydney Symphony Orchestra Holdings Pty Ltd was formed. During this period, the ABC set in motion plans to consolidate its properties and buildings in Sydney and Melbourne into single sites in each city. It was not until 1991, however that the corporation's Sydney radio and orchestral operations moved to a new building built by Leighton Contractors on a single site in the inner-city suburb of Ultimo. In Melbourne, the ABC Southbank Centre was completed in 1994, and now houses the radio division in Victoria as well as the Melbourne Symphony Orchestra. On 15 August 1994 the Parliamentary and News Network (PNN) was launched, to provide a continuous news network broadcast on the same frequencies used by the PBN, when Parliament was not sitting, and in 1996, it was named "ABC NewsRadio on the Parliamentary and News Network". ABC-FM relaunched in 1994 as ABC Classic FM, accompanied by major changes to the station's music and programming. By the early 1990s, all major ABC broadcasting outlets moved to 24 hour-a-day operation, while regional radio coverage in Australia was extended with 80 new transmitters. Live television broadcasts of selected parliamentary sessions started in 1990. In 1995, D-Cart digital technology developed by ABC Radio attracted worldwide interest and was sold to European, North American and Asian markets. The ABC used D-Radio, the first fully digital audio system, for Triple J. Trials for digital radio began in the 1990s, using