Inconsistent Service Disruptions (i.e. T3,T11,T4) - since July service work

I'm having the same issue here in 85383. I've chatted in 3 or 4 times now. I get kicked off multiple times a day. Modem logs show T3 issues. Chat rep doesn't know what that means so they ask me to reset my modem over and over.

They scheduled a tech to come to my house and they never showed. Now Cox wants me to buy a monthly support package or pay $75 for another tech to come out.

I started noticing the issues in July though it could have been happening sooner. With the amount that I'm working from home now, I notice it a lot more since I'm getting kicked off work calls or even the support chat with Cox today. Literally lost my internet while I was on the support chat and it didn't seem to matter. 

This is probably the best article I've found to describe my situation. 
https://forums.cox.com/forum_home/internet_forum/f/internet-forum/3152/t3-and-t4-timeouts-from-an-ex-field-technician 

No idea where to go from here. 

So apparently, the fact that I posted that I'm having the same issue in a similar area (85383) is viewed as Spam or Abuse by Cox and was taken down. haha. Can't get help anywhere these days. I'm not sure how my post was any different than everything else on this thread and the numerous threads linked above. 

This is looking more and more like a widespread issue. Up until about 10 days ago, my service was so great that I actually made a post praising Cox for their great quality.

Now, like many others on this forum in the same area, I'm getting T3 timeouts, DRW violations, and severe packet loss of up to 35% on the upstream. The common factor in almost all of the posts you linked seems to be problems on the upstream. Some also have downstream issues, but upstream appears to be more common. Like you I've dug into the DOCSIS specification and documentation, and I came to the same conclusions that you did about possible causes.

Here are the possibilities that I see:

1. Everyone's modem and/or interior cabling went bad simultaneously around August 1st. I hope no Cox support techs think this is a real possibility, even though they always try to blame the modem.
2. There are multiple individual network issues that all started around August 1st. A slim possibility at best.
3. There is a widespread issue but Cox is not aware of it yet. In this case, these reports need to be escalated to someone who is empowered to review them as a group and investigate the overall pattern.
4. There is a widespread issue, Cox is aware of it, but support has been directed not to disclose the issue. I hope that's not the case, but it would at least mean there's hope of getting it fixed someday.

Some of us are likely going to need to schedule tech visits to get this escalated to the proper levels. That's too bad because it wastes our time and Cox's time, but there might be no other way to get it resolved. If you're confident that your modem and cabling is good, it's worth it to have a tech come out. They threaten a $100 charge but I've never seen anyone get charged the fee unless it was a really obvious problem like having an unplugged coaxial cable or forgetting to connect power to the modem.

I made one of the posts on the forum that you linked. So far, my problem still persists as well. I have gotten a new modem and I made sure that there were no amps or splitters on my coax cable. My modem is the Motorola MB8600 and it's event logs look just like yours. I also have a lot of uncorrectables on my modem's status/connection page. It seems others in my area are also experiencing the same issues as I saw some else in my zipcode(92071, San Diego County) post in the forums as well. I think the only thing left for me is to try to get a technician to come and look at the wiring. It does seem like this a widespread issue as more and more posts are being made.

Here are my modem's event logs for comparison:

Hey, we have also been experiencing incredibly slow speeds here in our neighborhood.  We live near Warm Springs and Eastern across from Sunset Park.  There’s been a lot of utility work going on in our area also.  I’ve called Cox, only to be told it’s our modem and then to be offered an upgrade on speeds. Which was fine because it’s the same price we were paying. But no one at Cox wants to admit they have a problem. I’ve spoken with 6 of my neighbors who also have Cox internet, they have also called and received similar responses.  I’m planning on calling Cox today and requesting a manager. I don’t think the issue is anyone’s modem, I believe it’s a street connection issue and possibly Cox is unaware of the situation.  

Furthermore I was told you can pay $10 a month for as little as three months and have a tech come out to your house and check the system.  I’m debating spending the $30 to see what happens! I’ll have to do some research on the service. I’m not willing to spend a $100 if they don’t find a problem! My Internet speed of 3.5 mbps should be problem enough for them!

allen dustinp I am at my wits end with this.  EVERY day the service goes out for my entire neighborhood and outages show on the account page.  Lasts anywhere from an hour to 6 hours.  It is not my connection it is a whole neighborhood/ city wide issue.  Every other post on Nextdoor is all about Cox outages.  Can someone please help me to flag a larger issue than just the same **?  Resetting my modem will not help a city wide issue.  I can’t even talk to an agent because it will not connect me if an outage is present.  This is in New Orleans.  Please help!