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目前在通信方面，在這么通信工程的時候，遇到不少企業(yè)在租借E1（2M）線路利用PCM設(shè)備傳輸語音電話、音頻等業(yè)務(wù)?？赡艽蟛糠制髽I(yè)只對E1線路帶寬了解，而E1線路的具體知識點還是不太了解。1、一條E1是2.048M的鏈路，用PCM編碼。2、一個E1的幀長為256個bit,分為32個時隙，一…
2024-4-27 1:35:04[未知IP0801]網(wǎng)友
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2024-4-27 0:53:05[未知IP0801]網(wǎng)友
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2024-4-27 0:31:55[未知IP0801]網(wǎng)友
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