The dissertation has proposed a solution of pos line card which has the aggregate rate of 10gbps . the function of the pos line card is to extract the ppp frame from the sdh payload area and then do conversion for the ppp data , supplying a high speed i / o for np ( network proecssor ) 該pos線卡的設(shè)計(jì)目標(biāo)是:恢復(fù)出封裝在sdh幀中的ppp幀,并對(duì)其進(jìn)行格式的轉(zhuǎn)換,為上層路由設(shè)備提供一個(gè)高速的i / o接口。