(ADSL is one of the most widely used Internet access methods at present. The downstream bandwidth is as high as 1~2Mb/s, and the upstream bandwidth is also 512kb/s~1Mb/s, which fully meets the Internet access requirements of ordinary users. ADSL uses the original usual telephone line transmission, and is supplied by ISP (Internet Service Provider) to access ADSL equipment, and the access fee is low. Therefore, it is widely used in various types of Internet access.)
收藏
