[邮电通讯系统] 电信采用ADSL和LAN的技术运营方面的分析

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发表于 2022-7-31 14:37:32
ADSL是以铜电话线为传输介质的传输技术,采用了频分复用(FDM)技术,其上行(用户到交换局)和下行(交换局到用户)的速率不对称,下行速率设计通常在1.5Mbit/s至8Mbit/s之间,而上行速率则是在640kbit/s至1Mbit/s之间,所对应的最大传输间隔为5.5km,适用于下行数据量很大的Internet业务。

(ADSL is a transmission technology that uses copper telephone lines as the transmission medium, and adopts frequency division multiplexing (FDM) technology. Its uplink (user to exchange) and downlink (exchange to user) rates are asymmetric, and the downlink rate is usually designed in Between 1.5Mbit/s and 8Mbit/s, while the uplink rate is between 640kbit/s and 1Mbit/s, the corresponding maximum transmission interval is 5.5km, which is suitable for Internet services with a large amount of downlink data.)

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