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Frequently dropping internet - SYNC Timing Synchronization failure, RCS Partial Service, No Ranging Response received | Internet Problems
For the past 2 weeks the internet in my household has been frequently cutting out.
Sometimes it will disconnect every hour or two, other times it will disconnect multiple times in the span of 30 minutes.
Even when I hardwire my ethernet cable to the modem the issues persist as usual.
The technician on the phone said that everything seems to be normal from their side, and the technician that came out to check out the problem also said that he didn't see any issues.
I have been using the service with minimal issues for about 6 months, but the past 2 weeks have been awful. Even though I disconnect 20+ times a day, the internet speeds seem to be normal (I have frequently run speedtests) while the internet is functioning.
Through troubleshooting, calls with technicians, and a visit with the technician, it is guaranteed that the problem is limited to:
1. Modem
2. Wiring
3. Cox
I went to 192.168.100.1 to get more information about the modem (Arris SB6190) and saw this:
| Time | Priority | Description |
|---|---|---|
| Fri Jan 12 02:16:03 2018 | 3 | No Ranging Response received - T3 time-out;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 02:54:13 2018 | 3 | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 03:40:14 2018 | 5 | RCS Partial Service;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 04:06:33 2018 | 3 | No Ranging Response received - T3 time-out;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 05:09:15 2018 | 3 | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 06:54:54 2018 | 5 | RCS Partial Service;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 07:09:13 2018 | 3 | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 07:28:35 2018 | 5 | RCS Partial Service;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 07:54:15 2018 | 3 | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 09:35:20 2018 | 5 | RCS Partial Service;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 09:39:12 2018 | 3 | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 11:22:43 2018 | 5 | RCS Partial Service;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 11:22:43 2018 | 3 | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 11:22:44 2018 | 5 | RCS Partial Service;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 11:24:13 2018 | 3 | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 11:43:40 2018 | 5 | RCS Partial Service;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 12:09:11 2018 | 3 | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 14:10:16 2018 | 5 | RCS Partial Service;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 14:24:18 2018 | 3 | SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
| Fri Jan 12 15:14:59 2018 | 5 | RCS Partial Service;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0; |
I would really like some help as to how to fix the problem, I require a stable internet connection for work and I have resorted to using a hotspot from my phone just to have consistent internet!
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DustinP
Moderator
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1.1K Messages
Is the issue intermittent and not happening during the time we have a technician reserved? Do you experience the issue when you bypass the router and have a computer wired directly to the Modem?
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Ultimate_Speed_
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8 Messages
RCS Partial Service;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0;
= Modem is not provisioned correctly
SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0;
= Noise on the line usually caused by a loose connection on coaxial cable - this could be at a neighbors house on the same ped drop as you and not at your house.
No Ranging Response received - T3 time-out;CM-MAC=5c:e3:0e:3b:71:e1;CMTS-MAC=00:59:dc:79:8d:cb;CM-QOS=1.1;CM-VER=3.0;
= Modem is not provisioned correctly
Is the issue intermittent and not happening during the time we have a technician reserved?
= We boosted you signal and service for several days so when the tech comes out he/she finds nothing wrong with our end. We can then say its your equipment or connections at fault. After several days it will drop back off to the old junk service (because our equipment is mostly 10+ years old and very expensive to replace). So it is cheaper for us to say its your equipment having the issue and not our super structure network that is a lot older than your equipment.
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Ultimate_Speed_
New Contributor
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8 Messages
BTW.. I have more systems and networking certifications than any of the employees at COX Oklahoma City. I could remote into your modem un-cap it run some test then recap it. (oops just did) your modem is not at fault.
You could reach speeds in excess of 600MBs - ultimate service is capped at 300Mbs. 1MBs is 8x more than 1Mbs so 300Mbs = 37.5MBs.
Uncapped your modem hit 642MBs or 5136Mbs.
Mbs = Megabits per second / MBs MegaBytes per second.
Good luck with tech support.
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KrawdaddyinBR
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2 Messages
Can you really do that? I am having terrible speed issues.
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Allan
Moderator
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2.3K Messages
@KrawdaddyinBR,
We can look into any speed issues yo may be experiencing. What speeds are you currently getting? Also, is this issue happening with all devices in the home or just one?
Thanks,
Allan - Cox Support Forums Moderator.
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Ultimate_Speed_
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8 Messages
The table below contains the log of events that the SB6183 has detected. This log can be important to the service provider to help diagnose and correct problems, if any should occur.
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Ultimate_Speed_
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8 Messages
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Ultimate_Speed_
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8 Messages
Cox Internet Ultimate
TV
UP TO 300 MBPS
DOWNLOADS
(300 MBPS is equal to 2400 Mbps.
I have never seen ANYONE who was capped reach speeds above 25 MBPS (200 Mbps) at COX Communications Incorporated OKC)
PHONE
HOME SECURITY & AUTOMATION
Internet Ultimate
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Ultimate_Speed_
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8 Messages
Let's look at that.. Dialup is 56 k X 200 = 11200k so take 11200 k and devide by 8 to get 1400 Mbps then devide by 8 again to get 175 MBPS...
But NOBODY gets above 25 MBPS while capped. Therefore COX is FALSE ADVERTISING the potential for services. If we uncapped our modems and set them to not exceed 300 MBPS COX would have no legal recourse. But they have already breached the contract with false advertising of potential speeds available.
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MarkM1
Former Moderator
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231 Messages
Ultimate Speed User in OKC,
We do appreciate you reaching out to the Social Media group. If you are currently having an issue with your services, please send us an email at cox.help@cox.com with your name and full address so we can research your problem. Thank you for your time.
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Ultimate_Speed_
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8 Messages
I have had 3 days this entire billing cycle of internet service that's even close to what I pay for. So if you broke down the amount I pay by the days in this billing cycle then multiply that by 3 days of service my bill should be $ 8 . how about all of the customers in this area just pay tor the days we receive the service we requested.?
Would COX get on the ball to provide service to the customers or would they say " 'Eh, you agreed to our service that says "upto" so your screwed and we here at COX couldn't care less... Just pay us what we think you should pay and we might sometimes give you services like we promised in the beginning.
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ChrisL
Former Moderator
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7.1K Messages
It may be time to see about having a technician come out and troubleshoot further. Feel free to email us at cox.help@cox.com if you require assistance setting this up.
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