Automatic switched optical network ason represents the development trend of optical networks . multi - granularity optical switching is the importantly physically supporting techniques for ason to realize traffic engineering and quality of service 自動交換光網絡是光網絡的發展方向,多粒度光交換技術是自動交換光網絡實現流量工程和業務質量的重要物理支撐技術。
In order to adapt to the new traffic transfer environment and enhance market competitiveness of telecommunications operators , there came up intelligent technology of the transfer network , which is represented by the automatic switching transfer network ( astn ) and the automatic switching optical network ( ason ) . it may well be said that astn technology represents a qualitative transition in the development of the transfer network 為適應新的業務傳送環境,提高電信運營商的市場競爭力,以自動交換傳送網( astn )及自動交換光網絡( ason ) ?針對otn的astn為標志的傳送網智能化技術應運而生,可以說astn技術是傳送網絡發展的一個質的飛躍。