Over the past 3-4 weeks the Phoenix area and other cities have been constantly getting drops and seeing slow speeds in their internet service. With school starting for most communities and many more people working from home, these problems need to be addressed immediately. We implore you Cox, to stop blaming our modems on the problems and fix the issue with your service. You can see by the many posts on downdetector.com and istheservicedown.com as well as this forum, this is a widespread issue, with no response from Cox about apparent problems at all. Please fix our internet.

ZIP: 02814, I am having the same problem here. My down and upload speeds drop off dramatically. I also see internet drop out totally. I have noticed this for the last week or so. Most time resetting the modem restores the internet but I have had to do this for the last 2 days.

Unfortunately,. this is a common occurrence in my area (85204). Throughout the day I get unstable internet connections when using zoom, even though I'm using a wired connection and have the 150 service (cox speedtest will show around 125-130 Mbps download but its not stable). Late evening time, I'm lucky to get 4-7 Mbps down during peak times. I can understand increased usage and getting lower speeds, but a drop that low is crazy. It's borderline unusable

It has been absolutely horrific in Phoenix (85258) since the July 30th outage. https://app.fing.com/internet/outage/DROP:US-Arizona--Cox%20Communications@2020-07-30-0710-00000 Internet drops every 15-30 minutes for minutes at a time. Cox tech came out and did the typical "here's a new modem" but that did jack ***. Just talked to support rep and they legit just told me "We regret to inform you that the estimated time to repair is unknown".

Same issue in 85310. At least twice a day for the past 3 to 4 weeks.

Intermittent service (drops, slow speeds) for 85032 and other Phoenix area zip codes over the last 3 weeks. This is a cox issue, not our modems. Fix it

74 Replies

KenKK
New Contributor III
ZIP: 02814, I am having the same problem here. My down and upload speeds drop off dramatically. I also see internet drop out totally.

I have noticed this for the last week or so. Most time resetting the modem restores the internet but I have had to do this for the last 2 days.

Viole

New Contributor III

I have the same problem in San Diego. It has been this way for a week now and I even got a new modem but the problem still persists.

Allan

Moderator

@Viole, Your modem is reporting multiple time out errors at this time. Are there any splitters or signal amps on the cable line going to the modem? -Allan, Cox Support Forums Moderator.

Viole

New Contributor III

There are no splitters or signal amps on the cable line going to the modem that I could see.

My zip code is 92071 and here are the event logs for my modem.

Log

Time	Priority	Description
20:21:27 Thu Aug 6 2020	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:31 Thu Aug 6 2020	Warning (5)	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:31 Thu Aug 6 2020	Warning (5)	Dynamic Range Window violation
20:21:31 Thu Aug 6 2020	Warning (5)	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:31 Thu Aug 6 2020	Warning (5)	Dynamic Range Window violation
20:21:31 Thu Aug 6 2020	Warning (5)	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:31 Thu Aug 6 2020	Warning (5)	Dynamic Range Window violation
20:21:34 Thu Aug 6 2020	Warning (5)	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:34 Thu Aug 6 2020	Warning (5)	Dynamic Range Window violation
20:21:34 Thu Aug 6 2020	Warning (5)	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:34 Thu Aug 6 2020	Warning (5)	Dynamic Range Window violation
20:21:34 Thu Aug 6 2020	Warning (5)	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:34 Thu Aug 6 2020	Warning (5)	Dynamic Range Window violation
20:21:40 Thu Aug 6 2020	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:40 Thu Aug 6 2020	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:40 Thu Aug 6 2020	Warning (5)	Dynamic Range Window violation
20:21:40 Thu Aug 6 2020	Warning (5)	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:40 Thu Aug 6 2020	Warning (5)	Dynamic Range Window violation
20:21:40 Thu Aug 6 2020	Warning (5)	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:40 Thu Aug 6 2020	Warning (5)	Dynamic Range Window violation
20:21:41 Thu Aug 6 2020	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:41 Thu Aug 6 2020	Warning (5)	Dynamic Range Window violation
20:21:41 Thu Aug 6 2020	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:41 Thu Aug 6 2020	Warning (5)	Dynamic Range Window violation
20:21:41 Thu Aug 6 2020	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:41 Thu Aug 6 2020	Warning (5)	Dynamic Range Window violation
20:21:41 Thu Aug 6 2020	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:41 Thu Aug 6 2020	Warning (5)	Dynamic Range Window violation
20:21:41 Thu Aug 6 2020	Warning (5)	RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:41 Thu Aug 6 2020	Warning (5)	Dynamic Range Window violation
20:21:50 Thu Aug 6 2020	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:5d:10:7e;CMTS-MAC=00:59:dc:79:0a:3c;CM-QOS=1.1;CM-VER=3.1;
20:21:50 Thu Aug 6 2020	Warning (5)	Dynamic Range Window violation

infanite
New Contributor
Unfortunately,. this is a common occurrence in my area (85204). Throughout the day I get unstable internet connections when using zoom, even though I'm using a wired connection and have the 150 service (cox speedtest will show around 125-130 Mbps download but its not stable). Late evening time, I'm lucky to get 4-7 Mbps down during peak times. I can understand increased usage and getting lower speeds, but a drop that low is crazy. It's borderline unusable
- CrystalS
  Former Moderator
  Hello.
  
  This appears as if you may need someone to look into your account personally. We would definitely be able to assist you with this. Please reach us on Twitter at @CoxHelp, visit us on Facebook, or email us at cox.help@cox.com. Provide us the name on the account.
  
  Crystal S. Cox Support Forum Moderator
pattmorter
New Contributor
It has been absolutely horrific in Phoenix (85258) since the July 30th outage. https://app.fing.com/internet/outage/DROP:US-Arizona--Cox%20Communications@2020-07-30-0710-00000

Internet drops every 15-30 minutes for minutes at a time.

Cox tech came out and did the typical "here's a new modem" but that did jack ***. Just talked to support rep and they legit just told me "We regret to inform you that the estimated time to repair is unknown".
- jlamp
  New Contributor II
  I had the exact same experience, unfortunately.
- CrystalS
  Former Moderator
  Hello,
  
  This appears as if you may need someone to look into your account personally. We would definitely be able to assist you with this. Please reach us on Twitter at @CoxHelp, visit us on Facebook, or email us at cox.help@cox.com. Provide us the name on the account with the complete service address with a link to this thread so we can get started.
  
  Crystal S. Cox Support Forum Moderator
jmcwilli
New Contributor II
Same issue in 85310. At least twice a day for the past 3 to 4 weeks.
- Allan
  Moderator
  @Jmcwilli, I do not see any area wide outages currently in your vicinity. However, your modem is reporting high amounts of time out errors. Are there any splitters or signal amps on the cable line going to the modem? -Allan, Cox Support Forums Moderator.
Allan
Moderator
@Mr. Castle. There is an area wide outage in your vicinity at this time. Our techs are currently working on resolving the issue and you may experience intermittent service while we are working on resolving the issue. -Allan, Cox Support Forums Moderator
tmckinley
New Contributor
Having the same issue in 85018, had to leave a zoom call this morning after dropping the signal 4 times in 15 minutes!
- Allan
  Moderator
  @Tmckinley, Sorry for the late response. Your modem is currently up and running. Are you still experiencing issues with the service? -Allan, Cox Support Forums Moderator.
Ober_Dober
New Contributor
Same problem for the past month. Local (Phoenix, 85044 (Ahwatukee)) High Schools now in session virually the problem??

Whatever the case, COX IS the problem. I've been through $2000.00+ worth of their modems and various (ASUS, Netgear) WiFi systems and extenders. NO CHANGE in the problems.

COX - fix this!
- Allan
  Moderator
  @Ober Dober, Your modem is up and running with a good signal and I do not see any unusual latency/packet loss at this time. Are you experiencing this issue with multiple/all devices in the home or just one? Also, can you try a wired device and let us know the results. Thanks. -Allan, Cox Support Forums Moderator.
  - GiveMeMoreBits
    New Contributor II
    Obviously it doesn’t happen at all times. However, we are blamed yet y’all charged to do some line changes when I got gigablast and it never worked and now it is worse. Never your fault though, always our modems or our routers. Don’t here these issues as often from friends who have centurylink and they get the full speed cause they have fiber. Tell your company to stop cheaping out.
    
    if they had gone through with fiber instead of stopping cause google stopped we wouldn’t have these issues. Hopefully a story or political pressure get y’all moving soon.
- Rabiya
  New Contributor II
  
  Having same issue in same zip code.. for past 3-4 weeks, modem reveal that once in a while I see below sequence happening over and over again. Power level 2 to 3.2 dbMV and SNR around 41.9dB
  
  [Internet disconnected]---> [time synchronized with ToD Server]---> [Internet connected]
  
  Had same issue year back and cox technician had to come and fix some of their equipment/signal, but feeling pissed off I am having to go through this again
TeacherJustTryi
New Contributor
I agree this is a wide spread issue. I work as a teacher & today we kept losing about 10% of the class at various times. Every one of them had Cox & when mine finally dropped I had to use my phone's hotspot to be able to continue instruction. I'm not even in the same city as my students! This is ridiculous.
- Allan
  Moderator
  @TeacherJustTrying ToTeach, It looks like your modem is reporting a high amount of time out errors. Are there any splitters or signal amps on the cable line going to the modem? -Allan, Cox Support Forums Moderator.
jlamp
New Contributor II
Same here, 85208. It’s been constant for over a month. Even had a new ONT brought out by a tech, and he checked all external wiring. Nothing was fixed. I purchased a new router just in case. Still persists.