Use ADF to make ADSL permanent online

Compared with Cable and DDN, ADSL requires virtual dialing before use. Not only does the dial-up software such as Enternet take up a lot of system resources, but more importantly, once we restart the computer, our IP address will also change, which is an annoyance for users who need to assume an FTP server or a personal Web site. In fact, ADSL can also be used to boot the Internet like Cable Wire. Let's take a look at how to implement this function.

It should be noted that the principle of our implementation is to use ADSL Modem's built-in dialer. At present, many external ADSL modems that use Ethernet interfaces have built-in large-capacity ROM chips, and we can fully utilize them. Take the ZTE ADSL831 at hand as an example. As long as the firmware of ADSLModem is upgraded to 2.79, we can easily achieve the goal.

First login to www.zte.com.cn
to download the latest version of the BIOS. ADSLModem's firmware upgrade can be done in MS-DOS mode, so you don't need to enter pure DOS. In fact, it can't be refreshed under pure DOS, because our network card can't work under pure DOS. However, it should be noted that when upgrading Firmware, we must disconnect the ADSLModem. This must not be forgotten, otherwise it will cause unexpected failures. The firmware upgrade of ADSLModem is very simple, because ZTE has already made a BAT batch file for us. We only need to use the xupgrade command and add the default IP address of the ADSLModem factory. For ZTE ADSL831, we enter the following command:

xupgrade 192.168.1.1

where "192.168.1.1" is the default IP address. For different ADSLModem, this data is not the same. Please refer to the manual for the situation! Since the whole refresh process is slow and the duration is nearly one minute, please ensure that the power is off, and try to close all the programs before the refresh to avoid sudden crash.

Of course, after refreshing Firmware, we can't bring us the "boot online" function directly. We still need to make some settings. First we need to find a serial data line, which is the same as the data line used in the previous ordinary Modem, one with a needle shape and the other with a hole shape. After connecting this data line to the ADSL Modem and PC serial port respectively, we can start terminal maintenance.

First open the HyperTerminal in the Windows attachment. For users who install Windows by default, you may have to add this component again. After opening the HyperTerminal for the first time, the system will ask for the correct COM port, because the motherboard usually has two COM ports, so don't make a mistake. The HyperTerminal then asks for the individual parameter values. In this case, please do not use the default value, but set the baud rate to 9600 and the flow control setting to "None". Before terminal communication with ADSLModem, we may also need to enter a password. The factory password of ZTE ADSL831 is lowercase adsl831. For other products, please refer to the manual.

In order to prevent accidents in the future modification process, it is recommended that you first type the show command to confirm and record the current parameter values, which can leave a basis for future recovery, and will also be used in later settings. Used. In order for ADSLModem to implement automatic dialing of built-in ROM, we must modify its working mode. Enter the Mode command and select r(Router). Then we enter the quick command to quickly configure the working parameters of ADSLModem. First, the HyperTerminal will ask for the connection protocol. Here, select PPPoE(pe). As for the EthernetIP, Subnetmask, VPI, and VCI parameters, we can refer to the previously recorded data to fill in, do not modify. Finally, when the HyperTerminal asks for Authentication, we must choose PAP(p). Only in this way can the automatic Internet access function be enabled. However, we enter the ADSL access username and password provided by the telecommunications, pay attention to case sensitivity, and save the settings.

When you're done, we enter the Save command to let ADSLModem write the modified value to ROM and restart. Of course, at this time, everyone must uninstall the virtual dialing software such as Enternet to avoid conflicts. Ok, now restart the PC, we can already achieve "boot online"!

The last thing to note is that the modification methods of different brands of ADSLModem may be different, but the general process is still the same. I hope everyone can give the opposite. In addition, some models of ADSLModem may not support built-in dialing because it does not have the remaining ROM space, especially some built-in PCI interfaces.