The Turkish PTT has chosen Northern Telecom Ltd to develop the Turpak national packet switched network in a deal worth $4.3m. Work on the network, which will link all major Turkish cities and provide direct international connections to 16 countries worldwide, begins shortly and will go on for two years; the first stage, which should be completed by mid-1989, will link Ankara, Istanbul, Izmir and Adana. DPN-100 processors form the basis of the Turpak network, which will be available to Turkish financial and government organisations for valueadded service such as viewdata and electronic mail.