If you understand how ADSL works, please enter

This is a private address, which is equivalent to such a private address.

Maybe redialing a few times won't be like that.

This has nothing to do with your adsl, you can dial up to get the IP, it means that your adsl is normal, **contact Telecom, there may be an error in address translation, this individual can not solve it for the time being.

See if your account is the same as someone else's? You can try using your account in someone else's home.

Or try it on your computer with someone else's account, and if it doesn't work, call the operator's maintenance staff** and let the operator solve it.

Find an operator to solve it! Most convenient!

ADSL Key Features:

1.A ** line can be answered, dialed and transmitted at the same time, and the two do not affect each other.

2.Although the original ** line is still used, the data transmitted by ADSL does not pass through the ** switch, so ADSL does not need to pay additional ** fees for Internet access, which saves costs.

The data transfer rate is automatically adjusted according to the conditions of the line, and it transmits data on a "best effort" basis.

Application of ADSL.

It is used as an access line for the leased line network.

The leased line provides symmetrical communication services with symmetrical uplink and downlink rates, so ADSL modem can be used, and the terminal can be connected to it through or equal serial ports, and its bidirectional transmission rate is 128 kbit s 2 Mbits.

1.Used as an access line for the Internet.

In the Internet, the amount of downlink data for client server services such as browsing the Web is much larger, so ADSL modem with high-speed downlink can be used.

2.Used as an access line for ATMs.

The ATM of backbone line has become the trend of global communication development, so how to use XDSL as an access line for ATM service has become a hot spot in current research and development. Institutions such as ANSI, ETSI, ITU-T, ADSL and Sohu ATM Forums are also standardizing ATM over ADSL technology.

In June 1997, Alcatel, Microsoft and other companies jointly published the ADSL system specification, giving the basic method of using ADSL equipment to design ATM networks. Figure 2 shows an example of an ATM terminal using ADSL lines to establish a permanent virtual circuit (PVC). VPI (Virtual Path Identifier) and VCI (Virtual Channel Identifier) are usually set independently for each ATM terminal, if at an ATM

Over ADSL has always used this specification, but the introduction of a comprehensive ADSLMODEM (DSLAM: Digital Subscriber Line Access Multiplexer) with multiplexing function does not maintain the uniqueness of VPI VCI. Therefore, the joint recommendation stipulates that ATM terminals should only set up VCI, and VPI is used as a symbol for DSLAM to identify each ATM terminal (ADSL line).

Founded in 1989 at Bell Labs, ADSL (Asymmet-Ricai Digitai Subscriber Loop) is a member of the XDSL family and is known as the "express train on the modern information superhighway". It is deeply loved by customers because of its high downlink rate, frequency bandwidth, and excellent performance, and has become a new, faster and more efficient access method after Modem and ISDN.

It is a high-speed broadband technology that runs on the original ordinary ** line.

The international standard for ADSL was approved in 1999 and is called . It allows up to 8 Mbps downlink speeds and 1 Mbps uplink speeds. The ADSL2 standard, released in 2002, can reach a downlink speed of 12 Mbps, and the uplink speed is still 1 Mbps.

Then there was ADSL2+, which doubled the downlink speed to 24 Mbps using double bandwidth (MHz) over twisted pairs.

At present, this technology is gradually being replaced by optical fiber.

Hello! What we often call modem is actually the abbreviation of modulator and demodulator, which is called modulator and demodulator in Chinese. There are also people who affectionately call it "cat" according to the homonym of modem.

We know that the information in the computer is composed of "0" and "1", and the signal is missing, while the transmission on the ** line can only be an analog electrical signal. Therefore, when two computers want to transmit data through the first line, a device is needed to be responsible for the conversion of digital to analog. This digital-to-analog converter is the modem we're going to talk about here.

When the computer sends data, the modem first sensitizes the digital signal to the corresponding analog signal, a process called "modulation". Before the modulated signal is transmitted to another computer through the carrier wave, the receiver's modem is responsible for restoring the analog signal to a digital signal that the computer can recognize, a process we call "demodulation". It is through this digital-to-analog conversion process of "modulation" and "demodulation" that remote communication between two computers is realized.

So the moden is a bidirectional conversion signal.

What is commonly referred to as "ADSL" refers to dial-up broadband. This wide band is separated by ** wire as the medium.

** Cable to ADSL modem, then to computer. Then dial up the computer to connect to the broadband.

It is common to see that there is a splitter when the ** line comes out, and then the ** line signal ADSL data signal and the ordinary audio ** signal are separated and connected on one side"Cat", the other side is connected to the ** machine, so as to avoid noise interference when playing **.

ADSL technology uses frequency division multiplexing technology to divide the ordinary ** line into three relatively independent channels: **, uplink and downlink, so as to avoid mutual interference.

**Line dial-up Internet access, basically almost gone.

ADSL (Asymmetric Digital Subscriber Line), an asymmetric digital subscriber line, generates three information leakage channels on the ** line in the early file: a high-speed downlink channel with a rate for user ** information; A medium-speed dual-search channel with a rate of 16kbps-1mbps; An ordinary old-fashioned ** service channel; And all three channels can work at the same time.