What are the characteristics of adsl access mode
Editor to share with you what are the characteristics of adsl access, I hope you will gain something after reading this article, let's discuss it together!
The characteristics of adsl access mode are as follows: 1. High-speed transmission; provide asymmetric transmission bandwidth between uplink and downlink. 2. Surfing the Internet and making phone calls do not interfere with each other; data signals and telephone audio signals are modulated in their respective frequency bands according to the principle of frequency division multiplexing. 3. Exclusive bandwidth, safe and reliable; each node uses a broadband switch to process and exchange information, and the information transmission is fast and safe.
The operating environment of this tutorial: windows7 system, Dell G3 computer.
Correlation
Asymmetric digital subscriber line (ADSL,Asymmetric Digital Subscriber Line) is one of the most popular digital subscriber line (xDSL,Digital Subscriber Line) services.
The international standard of ADSL was approved in 1999, which is called G.dmt. It allows downlink speeds of up to 8 Mbps and upstream speeds of 1 Mbps. This standard has been surpassed by ADSL2 released in 2002, and the downstream speed has been continuously improved to 12 Mbps, while the uplink speed is still 1 Mbps. Now we have ADSL2+, which uses the double bandwidth (2.2 MHz) on the twisted pair to double the downstream speed to 24 Mbps.
The main features of ADSL:
(1) High speed transmission
Provide asymmetric transmission bandwidth between uplink and downlink
(2) surfing the Internet and making phone calls do not interfere with each other
The data signal and the telephone audio signal are modulated in their respective frequency bands according to the principle of frequency division multiplexing, and can be dialed or answered while surfing the Internet, thus avoiding the trouble of not being able to use the telephone when dialing up the Internet.
(3) exclusive bandwidth, safe and reliable
Each node uses a broadband switch to process and exchange information, and the information transmission is fast and safe.
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