Comprehensive introduction to the features and differences of ADSL Broadband Access Technology

This topic describes the similarities and differences between the features of the ADSL Broadband Access Technology. After the popularization of the broadband, the problems of the ADSL Broadband Access Technology are often faced. So today, I am going to introduce you to the configuration skills of ADSL Broadband Access technology. I hope this article will teach you more things and bring convenience to your life.

DSL Digital user Line (Digital Subscriber Line) is a combination of transmission technologies using copper telephone lines as transmission media. It includes HDSL, SDSL, VDSL, ADSL, and RADSL, which are generally called xDSL. The main difference between them is the differences in signal transmission speed and distance, and the differences in Uplink speed and downlink speed symmetry.

HDSL and SDSL support symmetric T1/E11.544Mbps/2.048 Mbps) transmission. The valid transmission distance of HDSL is 3-4 kilometers. The Broadband Access Technology of ADSL requires two to four pairs of copper twisted-pair telephone lines. The maximum valid transmission distance of SDSL is 3 kilometers, and only one pair of copper wire is required. In comparison, symmetric DSL is more suitable for enterprise point-to-point connection applications, such as file transmission, video conferencing, and other processes that send and receive data volumes. Compared with asymmetric DSL, the market for symmetric DSL is much smaller.

VDSL, ADSL, and RADSL are asymmetric transmission. Among them, VDSL is the fastest xDSL technology. On a copper pair of twisted pair telephone lines, the uplink data speed is 13 to 52 Mbps, And the downlink data speed is 1.5 to 2.3 Mbps, however, the transmission distance of VDSL is only several hundred meters.

VDSL can be a cost-effective alternative to fiber-to-home solutions. Currently, VODVideo on demand in Shenzhen uses this access technology; ADSL supports the uplink speed of Kbps to 1 Mbps on a copper line, and the downlink speed is 1 Mbps to 8 Mbps. The valid transmission distance is within 3-5 km;

RADSL provides the same speed range as ADSL Broadband Access technology, but it can dynamically adjust the user access speed based on the quality of twisted pair copper wires and the distance between transmission. These characteristics make RADSL an ideal technology for high-speed surfing, on-demand video IAV, and remote LAN access.

Because in these applications, the user downloads much more information than the uploaded information sending command. The high price-performance ratio of ADSL Broadband Access Technology Services is inseparable from the unique technical advantages of ADSL Broadband Access Technology over other access technologies.