Asymmetric Digital Subscriber Line (ADSL) is the most popular transmission technology for broadband network and uses traditional telephone lines to transmit digital data through ATM exchange technology and technology specific to the ADSL modem. Compared to the modems which use traditional telephone lines (56Kbits/sec), ADSL offers download speeds of up to 8Mbps and upload speeds of up to 256K-1Mbps to achieve real two-way high-speed broadband Internet. The latest ADSL2/ADSL2+ technologies can even provide transmission service for up to 24Mbps of high speed.
The distinguishing feature of ADSL is its ability to allow the flow of upstream and downstream bandwidth asymmetrically because download demands are greater than upload demands for common users while browsing the Internet. This asymmetric design feature is also telephone spectrum compatible, solving the problem of echoes, conforms to use habits and characteristics of common users and uses only one phone line for speaking on the phone while browsing the Internet. |
