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Frequent Disconnects - No Ranging Response received - T3 time-out - Low Downstream

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Frequent Visitor

Frequent Disconnects - No Ranging Response received - T3 time-out - Low Downstream

No splitters in the circuit, modem is conneceted directly to grouding block. No TV's connected.

 

Arris SB6121.

 

Disconnects were intermittent before. I chatted with tech support via webchat and they did something-now its worse. 

 

I tried calling 1-800-COMCAST and they keep insisting on sending a reset signal and don't let me talk to an agent.  Really frustrated here.

 

Logs and signal cuts below.

 

@ComcastMikeC please help.

 

https://imgur.com/asVMq6h

https://imgur.com/T4Xegf5

https://imgur.com/lUJi48e

 

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Frequent Visitor

Re: Frequent Disconnects - No Ranging Response received - T3 time-out - Low Downstream

tried two different cables from block to modem. same result

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Expert

Re: Frequent Disconnects - No Ranging Response received - T3 time-out - Low Downstream

FWIW, ComcastMikeC hasn't posted here since 2012.. Call 1800comcast and book a tech to come out and investigate / correct. Good luck !



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Frequent Visitor

Re: Frequent Disconnects - No Ranging Response received - T3 time-out - Low Downstream

Had no idea, thanks.

 

That's exactly the problem I can't even book someone if I wanted to. In an endless "We are going to send a reboot signal, call back in 10" Then I call back. Then "We are going to send a reboot signal, call back in 10". 

 

Rediculous.

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Expert

Re: Frequent Disconnects - No Ranging Response received - T3 time-out - Low Downstream

It's hard to get a tech out right now unless your service is completely down due to COVID 19, sorry.



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Frequent Visitor

Re: Frequent Disconnects - No Ranging Response received - T3 time-out - Low Downstream

So I'll leave my modem outside and run rj45 to my router from the sidewalk since it works when I bypass the outdoor cable.
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Frequent Visitor

Re: Frequent Disconnects - No Ranging Response received - T3 time-out - Low Downstream

Still having this issue. Currently I have a cable flying out of my window because "it works"

 

Need a tech to come investigate Comcast's side because I am only getting -11 dBm downstream signal strength at the grounding block. Same value with three different cables from block to modem.

 

Today its -13 dBm

 

https://imgur.com/H9lc3Tw

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Frequent Visitor

Re: Frequent Disconnects - No Ranging Response received - T3 time-out - Low Downstream

@EG I am getting frequent disconnects and its disrupting my ability to work from home as required by my employeer. I am unable to make an appointment with a tech via phone or web. I tried the web chat and the representative didn't offer a technician and said I basically can't have anyone come out until after June 30. I could lose my job if I don't get this resolved.

 

Can you please escalate my issue to someone who can investigate the issue on comcast's end or at least dispatch a technician.

 

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Expert

Re: Frequent Disconnects - No Ranging Response received - T3 time-out - Low Downstream

I'll try. No guarantees. Good luck !



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Frequent Visitor

Re: Frequent Disconnects - No Ranging Response received - T3 time-out - Low Downstream

https://imgur.com/uwvuKzL

https://imgur.com/bnVgseS

 

extreme packet loss at same exact time modem is registering T3 timeout. this is happening roughly every 5 minutes for one minute at a time. unable to maintain connection.

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Official Employee

Re: Frequent Disconnects - No Ranging Response received - T3 time-out - Low Downstream

Hi @drktmplr12

 

Sorry for the experience you're having with your internet. I understand how frustrating this can be, especially if it's affecting your ability to work from home during this time. I'd be happy to investigate and see if I am able to get a tech out sooner, but I also can't make any promises due to measures put in place because of COVID-19. Please send me a private message with your first and last name (and the name of the account holder), and the house number associated with your service address. To send me a private message, click on "ComcastChe" and then click send a message. 


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Frequent Visitor

Re: Frequent Disconnects - No Ranging Response received - T3 time-out - Low Downstream

https://imgur.com/2HMq2NP

https://imgur.com/Vmuu22U

 

not sure why but my modem's clock is 1 hour behind my computer's clock. only pointing out that the time outs coincide with severe packet loss followed by outright disconnection.

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Expert

Re: Frequent Disconnects - No Ranging Response received - T3 time-out - Low Downstream


@drktmplr12 wrote:

 

not sure why but my modem's clock is 1 hour behind my computer's clock. .


FWIW, that's normal. Cable modems do not do daylight savings time.



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I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!