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 192.168.0.1 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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Comments

23 comments
  • 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?

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  • 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?

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  • Fw update fixed my issues

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  • 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..? !

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

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  • 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..

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

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  • Samantha,

    Glad to hear you got this fixed.

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  • 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. 

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  • 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.

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  • 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

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  • 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.

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  • 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

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  • 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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  • So exactly what should I do with these numbers it looks like its all bad numbers for the most part

    Near End CRC Errors Interleave:
    485
    Near End CRC Errors Fastpath :
    N/A
    Far End CRC Errors Interleave :
    9
    Far End CRC Errors Fastpath :
    N/A
    30 Minute Near End CRC Interleave :
    0
    30 Minute Near End CRC Fastpath :
    N/A
    30 Minute Far End CRC Interleave :
    0
    30 Minute Far End CRC 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
    30 Minute Near End FEC Interleave :
    0
    30 Minute Near End FEC Fastpath :
    N/A
    30 Minute Far End FEC Interleave :
    0
    30 Minute Far End FEC Fastpath :
    N/A
    30 Minute Discarded Packets Downstream :
    0
    30 Minute Discarded Packets Upstream :
    0
    SNR Downstream :
    11 dB
    SNR Upstream :
    10 dB
    Attenuation Downstream :
    28 dB
    Attenuation Upstream :
    16 dB
    Power Downstream
    0 dBm
    Power Upstream
    12.6 dB

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  • Duane,

    Please contact your ISP and have them clear up the "Near End CRC Errors Interleave:" Errors. If they cannot you will have to replace your GT784WN with a model that Centurylink suggests.

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  • It appears all status readings are within the prescribed limits and we are losing our connection and having to recycle the modem at least daily. We just connected this after our old Westel gave up the ghost after nearly 20 years, nothing else has changed. What should we check next?

    VPI: 0
    VCI: 35
    Broadband Mode Setting: MULTIMODE
    Broadband Negotiated Mode: G.DMT
    Connection Status: CONNECTED
    Downstream Speed: 7616 Kbps
    Upstream Speed: 864 Kbps
    Retrains: 0
    Retrain Timer: 0 Days, 0H:0M:3S
    ATM QoS class: UBR
    Near End CRC Errors Interleave: 0
    Near End CRC Errors Fastpath : N/A
    Far End CRC Errors Interleave : 0
    Far End CRC Errors Fastpath : N/A
    30 Minute Near End CRC Interleave : 0
    30 Minute Near End CRC Fastpath : N/A
    30 Minute Far End CRC Interleave : 0
    30 Minute Far End CRC 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
    30 Minute Near End FEC Interleave : 0
    30 Minute Near End FEC Fastpath : N/A
    30 Minute Far End FEC Interleave : 0
    30 Minute Far End FEC Fastpath : N/A
    30 Minute Discarded Packets Downstream : 0
    30 Minute Discarded Packets Upstream : 0
    SNR Downstream : 23 dB
    SNR Upstream : 10 dB
    Attenuation Downstream : 13 dB
    Attenuation Upstream : 10 dB
    Power Downstream 19.4 dBm
    Power Upstream 11.9 dBm

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  • Chip,

    Are these numbers before you shut the unit off or after. Because when you power cycle the unit these numbers are also reset.

    When and where was the GT784Wn purchased?

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  • I have a GT784WNV with firmware GT784WN-VZ-1.1.22 that the broadband keeps disconnecting.

    Connection
    Status
    Broadband:
    CONNECTED
    Internet Service Provider:
    CONNECTED

    PPP Status
    PPP Parameter
    Status
    User Name:
    Newdsl
    PPP Type:
    PPPoE
    LCP State:
    UP
    IPCP State:
    UP
    Authentication Failures:
    0
    Session Time:
    0 Days, 0H:37M:42S
    Packets Sent:
    33186
    Packets Received:
    31818

    Broadband Status
    Broadband Parameter
    Status
    VPI:
    0
    VCI:
    35
    Broadband Mode Setting:
    ADSL
    Broadband Negotiated Mode:
    G.DMT
    Connection Status:
    CONNECTED
    Downstream Speed:
    5888 Kbps
    Upstream Speed:
    608 Kbps
    Retrains:
    15
    Retrain Timer:
    0 Days, 0H:4M:26S
    ATM QoS class:
    UBR
    Near End CRC Errors Interleave:
    5359
    Near End CRC Errors Fastpath :
    N/A
    Far End CRC Errors Interleave :
    17309
    Far End CRC Errors Fastpath :
    N/A
    30 Minute Near End CRC Interleave :
    1052
    30 Minute Near End CRC Fastpath :
    N/A
    30 Minute Far End CRC Interleave :
    0
    30 Minute Far End CRC 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
    30 Minute Near End FEC Interleave :
    40289
    30 Minute Near End FEC Fastpath :
    N/A
    30 Minute Far End FEC Interleave :
    0
    30 Minute Far End FEC Fastpath :
    N/A
    30 Minute Discarded Packets Downstream :
    0
    30 Minute Discarded Packets Upstream :
    0
    SNR Downstream :
    20 dB
    SNR Upstream :
    10 dB
    Attenuation Downstream :
    24 dB
    Attenuation Upstream :
    15 dB
    Power Downstream
    19.7 dBm
    Power Upstream
    11.9 dBm

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  • PPP Status
    PPP Parameter Status
    User Name: Newdsl
    PPP Type: PPPoE
    LCP State: UP
    IPCP State: UP
    Authentication Failures: 0
    Session Time: 0 Days, 0H:2M:51S
    Packets Sent: 652
    Packets Received: 532

    Broadband Status
    Broadband Parameter Status
    VPI: 0
    VCI: 35
    Broadband Mode Setting: ADSL
    Broadband Negotiated Mode: G.DMT
    Connection Status: CONNECTED
    Downstream Speed: 5888 Kbps
    Upstream Speed: 768 Kbps
    Retrains: 368
    Retrain Timer: 0 Days, 0H:1M:49S
    ATM QoS class: UBR
    Near End CRC Errors Interleave: 1471745
    Near End CRC Errors Fastpath : N/A
    Far End CRC Errors Interleave : 1352628
    Far End CRC Errors Fastpath : N/A
    30 Minute Near End CRC Interleave : 358
    30 Minute Near End CRC Fastpath : N/A
    30 Minute Far End CRC Interleave : 0
    30 Minute Far End CRC 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
    30 Minute Near End FEC Interleave : 19080
    30 Minute Near End FEC Fastpath : N/A
    30 Minute Far End FEC Interleave : 0
    30 Minute Far End FEC Fastpath : N/A
    30 Minute Discarded Packets Downstream : 0
    30 Minute Discarded Packets Upstream : 0
    SNR Downstream : 23 dB
    SNR Upstream : 9 dB
    Attenuation Downstream : 25 dB
    Attenuation Upstream : 16 dB
    Power Downstream 19.9 dBm
    Power Upstream 11.9 dBm

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  • Bevis,

    Have you had Verizon come out to your home to check the signal strength?

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  • Hello,

    Issue: Have had wireless Verizon + DSL for 13 years with no connectivity issues (had the Verizon issued modem). 18 months ago upgraded laptop and purchased ActionTec modem and connectivity has slowly degraded over the 18 month period. Still on Verizon + DSL. It is difficult to determine if I got a "bad" modem or if something else is causing the connectivity issues.

    It will drop if I attempt to open certain websites, and I can "catch" it by immediately going into laptop settings, selecting WIFI, and hitting "connect".

    Overnight or any period over several hours when not in use, internet connection is dropped. All the while modem shows solid green for Internet, wireless, and DSL, while laptop is not connected to internet. After extended period of non-use, I cannot simply go into laptop and select WIFI and connect; instead, I have to toggle on-off button on back of modem to have it reboot and then go into laptop and "manually" connect. Or if after period of extended internet use (5+ hours), it will eventually drop and the "catch" solution will not work to reconnect but I have to turn modem on/off toggle to get it to reboot.

    Any insights are appreciated, here are the WAN stats

    VPI: 0
    VCI: 35
    Broadband Mode Setting: MULTIMODE
    Broadband Negotiated Mode: G.DMT
    Connection Status: CONNECTED
    Downstream Speed: 1184 Kbps
    Upstream Speed: 448 Kbps
    Retrains: 0
    Retrain Timer: 0 Days, 0H:8M:41S
    ATM QoS class: UBR
    Near End CRC Errors Interleave: 2
    Near End CRC Errors Fastpath : N/A
    Far End CRC Errors Interleave : 0
    Far End CRC Errors Fastpath : N/A
    30 Minute Near End CRC Interleave : 0
    30 Minute Near End CRC Fastpath : N/A
    30 Minute Far End CRC Interleave : 0
    30 Minute Far End CRC 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
    30 Minute Near End FEC Interleave : 0
    30 Minute Near End FEC Fastpath : N/A
    30 Minute Far End FEC Interleave : 0
    30 Minute Far End FEC Fastpath : N/A
    30 Minute Discarded Packets Downstream : 0
    30 Minute Discarded Packets Upstream : 0
    SNR Downstream : 40 dB
    SNR Upstream : 26 dB
    Attenuation Downstream : 31 dB
    Attenuation Upstream : 20 dB
    Power Downstream 4.7 dBm
    Power Upstream 11.9 dBm

    Thank you, K

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  • K,
    Typically the modem requires 30 minutes connected time to get all the DSL information. You results are only @ 8 minutes since the last power cycle. however, from the current information it does look like a possible signal issue. The power downstream should be between 10 & 40 dBm. The downstream power is at 4.7 dBm.
    You will also notice that the SNR downstream is at the high end of 40 dBm. If you have regular phone service as well you may want to possibly replace any DSL filters on the phones.
    You can also contact your provider and give them the signal levels to see if they can correct those. Last option would be to replace the modem.

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