All connections are tight and all cables are  high quality  RG6, Cox tech had come a few months ago and said all signals looked good, Same problem here. I still experience T3 disconnects daily. Messages as “Unicast Maintenance Ranging” may seem strange when the modem is unable to reach the equipment at service provider, and it is not able to finish the standard periodic keep alive that cable modems do. Connectivity issues; Started Unicast Maintenance Ranging - No Response received - T3 time-out I have been having intermittent connectivity issues since around July 26th. Customer purchases TWO new, Cox-approved modems and connects each one separately to the box on the house. Tried all the troubleshooting I could find here, as well as from 3rd party sources, but no dice, it comes back and goes away randomly Here are the logs which I … This is despite a very strong, clean signal being measured from the pole and throughout the house by four technicians. Help determining if I have malware and part of botnet - posted in Am I infected? Unicast Maintenance Ranging attempted - No response - Retries exhausted I have been having connection issues with my internet and have had technicain out on 4/9/2020 and they said no issue detected. Started Unicast Maintenance Ranging REG RSP not received T6 Timeout and retries exceeded No Ranging Response received B-INIT-RNG Failure Current Info HW 2.02 FW V6.01.07 Please help before I light this crap on fire. I live in a relatively medium sized house (not that wide/long, 3 floors, router is on second floor, gaming room is on first floor), and I’m not even far away from the router, but it connects like a fucking potato. Repeated dropout of internet connection. This weekend it has been timing out multiple times an hour. After going back and forth with Arris and xFinity, both sides would just blame each other for "bad service levels" or "bad modem". No effect on T3 disconnects. Bottom line: After two months of extensive investigation, there has been no change and no positive diagnosis. The tech cycled my coax cable, told her the problem was fixed and left...then charged me $45. Line tech replaces box on side of house, line from pole to box, and short run of interior cable from box to modem. I've swapped out splitters, bypassed router, etc. 9/6/2007 16:01 3-Critical R005.0 Started Unicast Maintenance Ranging - No Response received - T3 time-out 1/1/1970 0:00 3-Critical D003.0 DHCP WARNING - Non-critical field invalid in response. No effect on the T3 disconnects - timeouts observed on both new modems. I've gone through the rigamarole of resetting the modem (both by a refresh from the Cox Customer care to … Replace interior cables with brand new high quality RG6 if practical. Confirm that all connections are tight. 9/5/2007 12:26 3-Critical R005.0 Started Unicast Maintenance Ranging - No Response received - T3 time-out As a reminder: I've run this setup with multiple modems, no splitters, directly connected to the NEW box with NEW cable drop from the pole, and now with power conditioner installed - all with no effect on T3 timeouts. If problems persist, contact Cox and request a tech visit as T3 timeouts are often caused by problems outside the boundaries of your property. Customer escalates issue with Cox - senior field line technician called to the house. This error obviously duplicates those being reported here by other customers widely spread out across the US, so I wanted to document the troubleshooting steps and technician interventions that have taken place to date - in the hope of moving the issue forward. Insane. Same situation here. At this point, there is nothing more to be done inside the house, as the senior tech acknowledged. Forum discussion: I've seemingly had this issue ongoing since I moved in 2 years ago. Understanding Event Logs Post your modem signals and full logs for more complete advice. I have a CM500-100NAS modem and an Orbi router with satellite. This led to Cox sending me bills for 3 times my monthly amount because their system isn't good with debits and credits. Check your private messages. They sent a tech out to my house who arrived late. They sent a tech out to my house who arrived late. My modem is an Arris SB6183 that is brand new (less than a month old). Tech #2 listens to me recount the troubleshooting steps above, takes a picture of the modem's log screen to send to regional/area supervisor, etc - no additional response, no effect on T3 timouts. Cox tech support only confirms signal strength to house and confidently ensures me it has to do with my equipment. This issue is with Cox, and not with anything between the street pole and my computer. CT - Started Unicast Maintenance Ranging - No Response received - T3 time-out; The visible symptom of the error is loss of connectivity for about a minute as the modem struggles to regain the internet connection. After hours of calls between … 2019-8-22, 03:04:26 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out; 2019-8-22, 03:04:53 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 … Started Unicast Maintenance Ranging - No Response received - T3 time-out, Started Unicast Maintenance Ranging - No Response received - T3 time-out - 3 outages, Unicast Ranging Received Abort Response - Re-initializing MAC, Internet Forum requires membership for participation - click to join. This indicates a problem on your upstream connection. I've swapped out splitters, bypassed router, etc. If problems persist, contact Cox and request a tech visit as T3 timeouts are often caused by problems outside the boundaries of your property. I still experience T3 disconnects daily. Yesterday I replaced my old Motorola Surfboard 6141 modem with a Netgear CM600 modem, and activated it with Comcast. You should log into your modem and take Screen shots of the power levels at random times of the day, This way you can post them here if they appear different from each other, Will help a cox tech figure out the problem! Multiple resets of the modem has been of no help. Bottom line: After two months of extensive investigation, there has been no change and no positive diagnosis. Started Unicast Maintenance Ranging - No Response received - T3 time-out; ... Cox tech support only confirms signal strength to house and confidently ensures me it has to do with my equipment. What do I do? This is a relatively new problem for me. Confirm that all connections are tight. Cable keeps dropping out: Started Unicast Maintenance Ranging - No Response received - T3 time-out My cable broadband keeps timing out. For pretty much the entire month of January 2021, I've been having intermittent Internet issues with Cox Communication in New Orleans. Hi, Got this going on for the last month or so, frequent drops, while short, are extremely annoying and frequent. The replaced the ends of the cables and tested the signal. Customer tries running system without Wi-Fi router - no effect. Remove all unnecessary splitters. And some isp's still might allow 600mbps using that modem, but not all do. Tech #1 reads signals at the box on the house, says they are fine, replaces in-home 3-way spitter in the basement since existing one was "old." In my case, and in others reported here, the events are clustered in time. Event Log: Unicast Maintenance Ranging. Could you reply to mine with your account details please? Tech #3 again reads signals at the box on the house and assures me they are strong (which I know they are.) This indicates a problem on your upstream connection. 2019-08-08, 08:42:27: Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC=14:59:c0:f5:f4:10;CMTS-MAC=00:a2:89:d0:1d:ce;CM-QOS=1.1;CM … Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-2020-11-19, 17:55:42: Critical (3) ... for example, cox is now requiring docsis 3.1 for speeds greater than 150mbps. Just to update this post: I have now taken the additional step of purchasing a decent battery backup unit with power-conditioner capability, just to eliminate the possibility that fluctuating power levels could be causing the issue. I can't come to any conclusion here other than the problem is with Cox's line outside my house. 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