Why do I have to power cycle my GT784WN to get Internet access?

This is typically caused by DSL signal issues. To check the DSL signal follow these instructions.

 In your Address Bar, where you would normally type a website, erase everything. Then type in the numbers and hit enter.

Log into your modem, click the Status icon and on your left, click on WAN status.

In the Broadband settings, check for Near and Far End CRC and Near and Far End RS-FEC Errors Interleave.

These should all have a ZERO to the right. If there are numbers over 100 here, you have a bad DSL connection and the modem is picking up errors on the line. The higher the error counts are, the more chance you will be disconnected.

Check the SNR margin. This should be 10db to 40db for a good connection. Less than 6db and your modem WILL be disconnected.

Check the Attenuation. This should be 10db to 40db. Higher than 50db and your modem WILL be disconnected.

Check the Power. The Power level should be between 10db to 40db. Higher than 50db will cause drops.

These all indicate issues with the DSL line or your phone wiring in your home.

Make sure you have no splitters or filters connected to your wall phone jack outlet to the modem.

Make sure your phone cord is between 6 and 12 feet long, no longer.

You may need to contact your ISP to have them check the lines at your house.

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  • I just replaced my CenturyLink Leased modem with a GT784WN to save leasing fees. The previous leased modem was working fine. Since the new install I am losing Internet connectivity intermittently and have to either plug and unplug the phone line from the modem to the jack or recycle the Actiontec device. I looked at the above advice and see that my Near End CRC Errors Interleave: is 242. The last time I called CenturyLink they advised I send the modem back because it is likely defective. Any advice?

  • This is a problem with the signal coming from your ISP. Those errors should be 0. You should have them come out and test the line all the way up to the modem. They cannot test for those errors unless they come out to the house. They can only check up to the demark which is outside your house someplace in your neighborhood. They other option is to replace the phone cord going to your modem or try it in a different phone jack in your home?

    Are you using the new phone cord that came with your GT? How long is that phone cord? Do you have a DSL filter on the line going into your modem?

  • Fw update fixed my issues

  • My 30 min near end errors are 63526136! Old house, new internet. Could it be the phone line from interface box is bad? It's an old wire, at least a 30 foot run to inside jack. Time to find a way to run new phone wire..? !

  • Yes, I would have your ISP come out to your house and check all the lines inside your home.

  • Well I plugged router/modem directly into outside interface box. So far no errors. I'll be replacing my own inside wiring since century link charges to do it..

  • Just rewired from interface with cat5 cable...that was easy!

  • Samantha,

    Glad to hear you got this fixed.

  • Having this issue myself. Need to reboot the modem every other day because of the 'No Internet Access' issue.

    As for the post, I see this on my page

    Near End CRC Errors Interleave: 19 
    Near End CRC Errors Fastpath : N/A
    Far End CRC Errors Interleave : 0
    Far End CRC Errors Fastpath : N/A

    Near End RS FEC Interleave: 0  
    Near End RS FEC Fastpath :N/A  
    Far End RS FEC Interleave : 0  
    Far End RS FEC Fastpath : N/A  

    SNR Downstream : 6 dB
    SNR Upstream : 9 dB

    Attenuation Downstream : 62 dB
    Attenuation Upstream : 39 dB

    Power Downstream 18.3 dBm
    Power Upstream 12.3 dBm

    I switched out my modem two months ago. Bought this one new via Amazon. Still using the ethernet and phone cables as my last, and those worked fine. No splitters/filters on either, and both are six feet in length. 

  • Matthew,
    From the information you posted, the "Attenuation" is extremely high. This is signal loss over distance and will cause connectivity issues. Attenuation, SNR and Power levels should be between 10 to 40 db. This is a signal issue your ISP would need to correct.

  • How do i power cycle my modem remotely? When I am not at the location of the modem when it looses connectivity to the internet, I would like to know how to remotely cycle it. Thanks

  • If it loses internet connectivity there is no way to do it remotely because there is no longer a connection to the modem except for locally.

  • I stated that poorly...the wireless is not working properly and I was wondering if I can try to log into the modem remotely to cycle it

  • What we understand from your comments is you are trying to find out that if you lose wireless locally can you reset the device remotely. More than likely when the modem locks up because of the DSL errors it will lose all connectivity so you will not be able to reset remotely.

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