Now almost all of us are using ADSL to connect to the Internet. Many people who use ADSL internet access can not open the page, download interrupted, or online video, audio streaming interrupted. However, when carefully check the status of ADSL modem, you will find that dial-up login has been successful, the line is also no problem? Let's analyze the reason for ADSL off line.
Line problem
First make sure the wiring is connected correctly. Telephone
network failure, so when the fault encountered, nature will be suspicious of the eyes turned to the virus program or Trojan program.
The virus causes ADSL to drop the line
In order to check whether there is a virus in the workstation, the author immediately hands-on to find the latest version of the anti-virus software, and the workstation of each "corner" of a thorough virus killing operation, after a long time after the antivirus wait, the author from the workstation system has really found
The internet will often encounter a drop in the line. The Web page can not open, download interrupted, or online video, audio streaming interruption, QQ off the line, the game out of line phenomenon. We might as well assume that the landlord is using ADSL Internet. In fact, other ways of surfing the internet often dropped the reason and the following reasons are roughly the same. Now let's analyze the reason for ADSL off line. 3lian Material One, line problem first check the home line, to se
Failure phenomenon:
XP system, the normal dialing, IP address has been allocated, but is not online, QQ, browsing the web is not good, reload the cat's drive, with the dial-up software is not, the cat line and power indicators are bright, not hot, restart the computer and cat useless, can ping with their own IP, recently appeared many times, Strange is how not to do , no matter how well he's done for a while, ask for help.
Solution:
1. Prompted that the search page could not be opened. This t
Troubleshooting Router Interface
Serial Port Trouble Shooting
Serial port connectivity problems, in order to eliminate the serial port fault, usually from show interface serial command, analysis of its screen output report content, to find out where the problem lies. The beginning of the serial port report provides the state of the interface and the status of the line protocol. There are several possible combinations of interfaces and line protocols:
1. Serial port operation, line protocol ope
digital signal into an analog signal, and the receiver uses the demodulator to convert the received analog signal into a digital signal, which is the modulation and demodulation of the signal.The device that implements the modulation and demodulation tasks is called a modem. When using the frequency band transmission, each side of the communication is connected to a modem, and the digital signal is sent to
Article title: Linux allows you to access the Internet easily-configure a dial-up network in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
1. Bash Shell (character interface) configuration
1. install Modem
To facilitate memory usage, connect your Modem
, it is particularly suitable for personal home users and small-sized enterprise/group users to access the Internet.2. Do I have to charge a telephone fee when I use ADSL to browse the Internet? No. Because the INTERNET access through ADSL is not connected to the INTERNET through the telephone exchange network, but occupies resources of the PSTN line and broadband network, you need to pay the ADSL monthly rental fee.3. What are the advantages of ADSL access compared with ordinary dial
There are multiple access methods for accessing the Internet at ordinary times, and the access speed provided by the ISP service provider is different from the download speed, which is hard to understand. The following lists the Internet access speeds for accessing the Internet:1. PSTN (published Switched Telephone Network, public telephone exchange network) technology uses PSTN to implement user access through MODEM dialing. A
In the rapid popularization of broadband network today, our hands of the modem seems to have "Lianpo old", using it on the internet is too slow, after the brutal elimination, accompany us countless days and nights of kittens will have no value? Of course not, we can also send and receive faxes through the modem in your hand, The effect is very ideal, so that we can make our
1. ADSL FAQ Classic Fault ADSL is running on the original telephone line of a high-speed broadband Internet access, it has the advantages of saving investment, fast Internet, simple installation and so on. At present, many local area networks, especially Internet cafes, use this method. Of course, the Internet in this way the fault is also more, the following for everyone to talk about ADSL troubleshooting methods and examples. the factors that cause ADSL fault The common hardware faults of
computer connected is not a problem, but it does not achieve normal connection, and the other computers on the LAN can connect to the Internet normally.
Workaround: Handle this wireless router configuration problem by connecting the computer that is bound to the MAC address to the router LAN port (but the wireless router does not connect to the modem or ISP's wiring), and then, using the MAC address cloning function of the wireless router, Copy the
In the Android system, the code for displaying the number of signal strength cells in the mobile phone is
Frameworks \ base \ telephony \ Java \ Android \ telephony \ signalstrength. Java
Getlevel () function, which is mainly used to obtain the signal strength.
public int getLevel() { int level; if (isGsm) { level = getLteLevel(); if (level == SIGNAL_STRENGTH_NONE_OR_UNKNOWN) { level = getGsmLevel(); } } else { int
cases.// ASU = 99 is a special case, where the signal strength is unknown.If (ASU Else if (ASU> = 12) iconlevel = 4;Else if (ASU> = 8) iconlevel = 3;Else if (ASU> = 5) iconlevel = 2;Else iconlevel = 1;
// Though mphone is a manager, this call is not an IPCIf (mphone. isnetworkroaming ()){Iconlist = ssignalimages_r [minetcondition];} Else {Iconlist = ssignalimages [minetcondition];}} Else {Iconlist = ssignalimages [minetcondition];
// If 3G (EV) and 1X network are available than 3G shoshould be
the definition. With the modification of different API versions, there are currently 14 status values added:The following is through their own data, and look at other people to check the data obtained from the experiment. Tidy up as follows:--------------------Added in API level 1---------------------public static final int network_type_unknownnetwork TYPE is Unknownconstant value:0 (0x00000000) (not known network type) public static final int network_type_gprscurrent network is gprsconstant Va
strategic partner of China Telecom and the first round of competition for 3G channels, hong Tu's three companies undoubtedly formed a close alliance with China Telecom. "our cooperation with Shanghai Telecom on 3G has started. We are negotiating how to specify some packages including data services."An industry insider told reporters that the advantages of China Telecom are fixed-line and broadband resources, especially in Shanghai. These two businesses have a great impact on the p
1. Shared Internet access
(1) network connection
If you want to add an additional computer to share the Internet with ADSL, You need to purchase two more NICs, one installed on the Internet access computer, the other is installed on the computer to be shared (hereinafter referred to as the client. We recommend that you purchase a 10/100 Mbps white adaptive Nic. It is worth mentioning that if the ADSL modem is an external Ethernet interface, there will
Now there are more and more users using the ADSL Broadband Network, and the maintenance of the ADSL equipment has become a problem that cannot be ignored. Only by maintaining it well can you not only save your "Broadband Journey", but also prolong your life.
Routine Maintenance
The necessary routine maintenance for ADSL equipment can not only reduce unexpected faults, but also ensure smooth network and improve the service life of the equipment. The main routine maintenance includes the following
Asyuncrical Digital Subscriber Loop Asymmetric Digital user line Loop (ADSL) is a member of the xDSL family and is hailed as "express on modern information highway" by Western countries ". Because of its high downlink speed, high frequency bandwidth, and excellent performance, it is favored by many users and has become another new and faster and more efficient access method after MODEM and ISDN, it is also the most widely used access method in China.
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