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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信號進(jìn)…
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2024-5-2 10:38:41[未知IP0801]網(wǎng)友
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