Internet connection problems have many causes, such as the phone signal problems, peripherals, etc. Today I have lost error 678 you have to study and how to resolve the issue.

Cause of Error 678 Message.

1. Phone number is invalid
2. Check that the phone lines working?
3. Verify that the outgoing call or not by a phone call home. 
   Use the Internet to continue with a regular phone. Then dial the number of ISP Dial-up number and then listen to the signs of hearing that rumor Fax Modem or if the sound signal of Fax Modem shows ์ phone calls using the Internet no problem but if not, try to hear the signal check. phone number of ISP.
4. Driver of Modem may be install is incomplete
5. The problem of Network Configuration.
6. Modem damage

Troubleshooting

1. Check Number Dial-up number to correct the ISP.
2. Check phone line is noise?
3. Check Modem & Drivers. If you not install, You should reinstall again.
4. Please contract ISP

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