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近年来，Internet发展迅速，网络正逐步融入现代人的生活和工作之中。目前多数人采用V90 56kbit／s Modem或ISDN接入Internet，速率低，不能满足网络多媒体宽带化发展的需求，成为网络的“瓶颈”。被IT界誉为下一代调制解调器的ADSL Modem，可以与电话共用现有的用户绞对铜线，
In recent years, the Internet has developed rapidly, and the Internet is gradually being integrated into the life and work of modern people. At present, most people use the V90 56kbit / s Modem or ISDN to access the Internet, and the rate is low, which can not meet the demand of broadband multimedia network development and become the “bottleneck” of the network. ADSL Modem, hailed as the next generation modem by the IT community, can share existing subscriber twisted pair copper with the phone,