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本文介绍了PPP/HDLC、LAPS和SDL三种IPoverSDH的映射协议 ,对它们各自的特点进行了比较 ,指出SDL协议是最有前途的IPoverSDH映射协议
This paper introduces the PPP / HDLC, LAPS and SDL three IPoverSDH mapping protocols, their respective characteristics were compared, pointed out that the SDL protocol is the most promising IPoverSDH mapping protocol