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光端機(jī)按照技術(shù)類型及接口種類是怎么分類的？

在之前寫過很多介紹光端機(jī)的分類，了解了光端機(jī)可劃分為視頻光端機(jī)、音頻光端機(jī)、電話光端機(jī)、數(shù)字光端機(jī)、以太網(wǎng)光端機(jī)等。那么如果我們來(lái)按照技術(shù)劃分的話，光端機(jī)又可以怎么去劃分類別呢？讓我們一起來(lái)看看怎么分類吧！光端機(jī)按照技術(shù)劃分可分為3類：PDH，SPDH，SDH ,…

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