Dial up connection prompts error 680 what s going on

There may be several reasons for this problem: 1. The line interface of the modem is not connected to the ** line; 2. The dial tone of the modem is not standard; 3. Equipment with interfering lines, such as extensions, parallel machines, sub-mother machines, etc. Here's how to fix it:

1. Check whether the ** cable is correctly connected to the line interface of the modem, and if it is not installed, connect it; 2. In "Dial-up Network My Connection Attribute Settings Connection" to cancel "Wait for dial tone before dialing", and fill in "China (86)" for the country code; 3. Remove the equipment that interferes with the line, try to directly connect the main line of the in-room ** line to the modem in the shortest possible way, and then transfer it out from the modem. If this still does not work, it is recommended that the user change the ** line to detect whether it is the cause of the modem. *Speed Limit Instruction:

Sometimes due to the limitation of communication equipment, or in order to obtain higher reliability, it is necessary to specify a transmission rate for the modem, at this time, it is necessary to set the corresponding settings, the speed limiting method of the modem of the Conexant chip: Select the modem to be set in the "Control Panel Modem", then click "Properties Connection Advanced", and fill in the box of "Additional settings" as "at+ms=v90,1,300,26400,300,49333". Meaning of the argument after the equal sign:

protocol, auto speed down, minimum uplink speed, maximum uplink speed, minimum downlink speed, maximum downlink speed. The rate limiting method for the modem of other chips is similar.

There can be several reasons for this:

1. Check whether the ** line is connected, if you don't find the problem, please unplug the ** line, directly connect it on**, use ** to dial the ISP ** number to dial (such as 163, 169), listen to the earpiece if there is a scream similar to the fax tone, if there is this sound, it means that your ** can dial up the Internet, it may be that you dialed in when you dialed in just now, or your modem is faulty. If it is a busy tone, please contact ISP Customer Service. If there is no sound or tone that says you can't call this number, there is a problem with your line.

2. The line interface of the modem is not connected to the ** cable, please check whether the ** cable is correctly connected to the line interface of the modem. It is also possible that the line behind the modem on the splitter is reversed with the phone.

3. The dial tone of the modem is not standard. In the "Dial-up Network My Connections Properties Settings Connections", wait for the dial-up tone before canceling the dial-up, and then restart the computer. If you still get "Error 680:

There is no dial tone", please delete the dial-up connection that has been established in the dial-up network, re-establish it, and then test the dial-up.

4. Equipment with interference lines, such as extensions, parallel machines, sub-parent machines, etc., at this time, it is best to remove the equipment of the interference lines, try to directly connect the main line of the ** line into the room in the shortest possible way to the modem, and then transfer it out from the modem.

Connection error 720 is due to an incorrect network protocol, and the workaround is as follows:

1. Right-click on the computer and select Manage;

2. Click Device Manager;

3. Uninstall the "WAN MiniPort(IP)" in the "Network Adapter" in the device management and restart the computer, at this time, the problem of computer network connection error 720 is solved.

When your broadband Internet access shows "Error 720", if you have a router, you can power off and restart it first, if it is still unusable, you can remove the router and perform the following tests:

1. Restart the computer and restart the modem device;

2. Rebuild broadband connections;

3. Uninstall the NIC driver and reinstall it.

4. Remove all network components and reinstall them;

5. Reinstall the computer operating system.

If it still cannot be used normally after self-service troubleshooting, it is recommended to contact the local customer service to report the fault.

I'm a telecom broadband maintainer, generally like this, first delete the user's broadband connection, create a new one, if it still doesn't work, it is recommended that the user redo a new system, generally these two can be solved

LZ is telecom, call 10000 manual service, simple and free.

There are several possible reasons for you:

1. The LINE interface of the modem is not connected to the ** line, at this time, we should check whether the ** cable is correctly connected to the LINE interface of the modem, and if it is not installed, it should be connected.

2. The dial tone of the modem is not standard, and it needs to be canceled at this time"Wait for the dial tone before dialing"。

3. Equipment with interference lines, such as extensions, parallel machines, sub-parent machines, etc., at this time, it is best to remove the equipment of the interference line, and try to directly connect the main line of the ** line into the room in the shortest possible way to the modem, and then transfer it out from the modem.

Error 691 may be due to the following reasons:

1.The username or password was entered incorrectly.

2.** or the overdue broadband payment is due.

3.The server does not respond, (the user port in the computer room is wrong, or the account is not activated.)

4: Hardware failure.