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電話光端機(jī)與PCM復(fù)用設(shè)備有一個(gè)質(zhì)的區(qū)別，正規(guī)來說，PCM設(shè)備傳輸介質(zhì)是2M同軸電纜，光端機(jī)傳輸介質(zhì)是光纜。一、技術(shù)分析：電話光端機(jī)與PCM復(fù)用設(shè)備，都是使用標(biāo)準(zhǔn)PCM脈沖編碼調(diào)制技術(shù)，具備濾波功能，使語音通話更清晰，穩(wěn)定！都是將用戶窄帶業(yè)務(wù)統(tǒng)一接入并復(fù)用成2M信號(hào)進(jìn)…
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