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首先需要說明一下的是,本文所指的銅纜傳輸電話是以大對(duì)數(shù)電纜作為傳輸介質(zhì),直接通過銅纜傳輸電話信號(hào),實(shí)現(xiàn)遠(yuǎn)端放號(hào)功能;而光纜傳輸方式就是指將交換機(jī)出來(lái)的電話線轉(zhuǎn)換成光信號(hào),以光纜作為主要傳輸介質(zhì)傳輸電話信號(hào)。目前國(guó)內(nèi)通信大環(huán)境而言,光纜已被越來(lái)越多用戶所…
2024-6-18 15:55:19[未知IP0801]網(wǎng)友
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2024-5-26 1:36:35[未知IP0801]網(wǎng)友
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2024-5-2 10:07:17[未知IP0801]網(wǎng)友
歐洲杯比分預(yù)測(cè)分析6.24http://www.sztspi.com/user/897513 http://www.sztspi.com/user/638414 http://www.sztspi.com/user/702312 http://www.sztspi.com/user/221510 http://www.sztspi.com/user/586013
2024-5-2 5:37:22[未知IP0801]網(wǎng)友
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2024-5-2 1:07:20[未知IP0801]網(wǎng)友
歐洲杯抽簽怎么分檔的http://www.sztspi.com/user/50977 http://www.sztspi.com/user/556615 http://www.sztspi.com/user/506112 http://www.sztspi.com/user/165230 http://www.sztspi.com/user/253911
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