1Zhang Zailong 1,Fang Jun 2,Yu Jinghai 2(1.Institute of Information and Network Technologies,Nanjing University of Posts and Telecommunications,Nanjing 210003,P.R.China,2.ZTE Corporation,Shenzhen 518057,P.R.China).Provider Backbone Transport Technology[J].ZTE Communications,2009,7(1):25-29.
