PTN Technical Requirements and Its Some Key Issues
Fang Li · ZTE communications · 2010
Packet Transport Network(PTN) is one of the hot research interests in carrier technologies.Although the international standards are not yet complete,China is leading the world in the development of PTN equipment and network applications.With General Technical Requirements for Packet Transport Networks as the CCSA standard,this paper first introduces the background of PTN technology and standards,then illustrates four important aspects:the PTN network architecture,multi-services bearing and data transfer function,PTN network protection,and OAM architecture and functional requirements.Finally,considering the profit motive of Chinese carriers and vendors,some key issues on PTN technology choice,network applications,and future evolution.