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隨著業(yè)務(wù)IP化進(jìn)程的加速,電信網(wǎng)絡(luò)承載的業(yè)務(wù)類型發(fā)生了根本性變化,已由時(shí)分復(fù)用(TDM)流量為主轉(zhuǎn)向分組流量占優(yōu)的形態(tài)。業(yè)務(wù)類型的變化對(duì)承載網(wǎng)提出了新的需求。現(xiàn)有基于SDH/SONET的傳送網(wǎng)適合承載速率恒定的同步電路業(yè)務(wù),對(duì)于承載具有突發(fā)性和不確定性特征的分組業(yè)務(wù),…
2024-4-27 6:39:55[未知IP0801]網(wǎng)友
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