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[Sonet/SDH] 请教一下STM-1的容量问题? [复制链接]

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亚星游戏官网-yaxin222  新兵

注册:2007-8-27
发表于 2007-9-9 10:39:00 |显示全部楼层
<p><span style="LINE-HEIGHT: 150%;">在资料上看到“一个</span><span style="LINE-HEIGHT: 150%;">STM-1</span><span style="LINE-HEIGHT: 150%;">信号只可以复用进</span><span style="LINE-HEIGHT: 150%;">1</span><span style="LINE-HEIGHT: 150%;">个</span><span style="LINE-HEIGHT: 150%;">140Mbit/s</span><span style="LINE-HEIGHT: 150%;">的信号,此时</span><span style="LINE-HEIGHT: 150%;">STM-1</span><span style="LINE-HEIGHT: 150%;">信号的容量相当于</span><span style="LINE-HEIGHT: 150%;">64</span><span style="LINE-HEIGHT: 150%;">个</span><span style="LINE-HEIGHT: 150%;">2Mbit/s</span><span style="LINE-HEIGHT: 150%;">的信号。</span><span style="LINE-HEIGHT: 150%;">同样的从</span><span style="LINE-HEIGHT: 150%;">34Mbit/s</span><span style="LINE-HEIGHT: 150%;">的信号复用进</span><span style="LINE-HEIGHT: 150%;">STM-1</span><span style="LINE-HEIGHT: 150%;">信号</span><span style="LINE-HEIGHT: 150%;">STM-1</span><span style="LINE-HEIGHT: 150%;">可容纳</span><span style="LINE-HEIGHT: 150%;">3</span><span style="LINE-HEIGHT: 150%;">个</span><span style="LINE-HEIGHT: 150%;">34Mbit/s</span><span style="LINE-HEIGHT: 150%;">的信号,即有</span><span style="LINE-HEIGHT: 150%;">48个2Mbit/s</span><span style="LINE-HEIGHT: 150%;">的容量。</span><span style="LINE-HEIGHT: 150%;">从</span><span style="LINE-HEIGHT: 150%;">2Mbit/s</span><span style="LINE-HEIGHT: 150%;">信号复用进</span><span style="LINE-HEIGHT: 150%;">STM-1</span><span style="LINE-HEIGHT: 150%;">信号时,</span><span style="LINE-HEIGHT: 150%;">STM-1</span><span style="LINE-HEIGHT: 150%;">可容纳</span><span style="LINE-HEIGHT: 150%;">3×7</span><span style="LINE-HEIGHT: 150%;">×<span>3=63</span></span><span style="LINE-HEIGHT: 150%;">个</span><span style="LINE-HEIGHT: 150%;">2Mbit/s</span><span style="LINE-HEIGHT: 150%;">信号。”</span></p><p><span style="LINE-HEIGHT: 150%;">除了<span style="LINE-HEIGHT: 150%;">从</span><span style="LINE-HEIGHT: 150%;">2Mbit/s</span><span style="LINE-HEIGHT: 150%;">信号复用进</span><span style="LINE-HEIGHT: 150%;">STM-1</span><span style="LINE-HEIGHT: 150%;">信号,</span><span style="LINE-HEIGHT: 150%;">STM-1</span><span style="LINE-HEIGHT: 150%;">可容纳</span><span style="LINE-HEIGHT: 150%;"><span>63</span></span><span style="LINE-HEIGHT: 150%;">个</span><span style="LINE-HEIGHT: 150%;">2Mbit/s</span><span style="LINE-HEIGHT: 150%;">信号(可以从复用结构图中看出)这个能够理解,其他的容量问题就不能想明白,不明白是怎么计算的,为什么不是<span style="LINE-HEIGHT: 150%;">140Mbit/s的容纳70个<span style="LINE-HEIGHT: 150%;">2Mbit/s</span><span style="LINE-HEIGHT: 150%;">的信号,<span style="LINE-HEIGHT: 150%;">34Mbit/s</span><span style="LINE-HEIGHT: 150%;">的容纳51个2<span style="LINE-HEIGHT: 150%;">Mbit/s</span><span style="LINE-HEIGHT: 150%;">的信号?</span></span></span></span>哪位大虾能够指点一下。</span></span></p>

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