Migration from PSTN to NGN

"Modernization of telecommunication infrastructure of PTK " is a Post and Telecommunication of Kosova (PTK) project. This project was initiated to replace most of the switching and access infrastructue of PTK that was very old, up to semi-automatic exchanges. For this project PTK decided to go for the latest switching technology Next Generation Network (NGN). The project consist of replacement of switches in 6 regions with the new access equipment that would use the same Soft Switch installed at central server room in Prishtina, capital of Kosova. The applied aproach by PTK to make a large step by moving from semi-electronic switches to NGN is presented by this paper.