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Constant disconnections

iain123456
Joining in

We recently had an engineer visit where the engineer concluded everything was fine, but the Hub 4 we had was replaced with a Hub 5. The reason for the visit was due to constant disconnections and loss of service.

Since the Hub 5 was installed it has been much better until the last couple of days where we're losing our connection a lot again. The only way to sort it is turn the hub off, leave for a bit then restart. It then works for a while. I've discovered there is a log in the Hub 5 which provides the table below, the critical items coincide with when the internet is lost, I'm assuming this is the reason and is therefore related.

I've found lots of questions about this, but no real answers, how does this get fixed? The current recorded message says there are no issues in our area, but when I check the service on line, it says there is an issue which is being worked on, check again tomorrow.

imePriorityDescription
14/12/2023 17:09warningDBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14/12/2023 17:09criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14/12/2023 16:58noticeREGISTRATION COMPLETE - Waiting for Operational status
14/12/2023 16:57warningRNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14/12/2023 16:57warningREG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14/12/2023 16:57warningDynamic Range Window violation
14/12/2023 16:57noticeDS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14/12/2023 16:57noticeTLV-11 - unrecognized OID;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14/12/2023 16:57warningDHCP WARNING - Non-critical field invalid in response ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14/12/2023 16:57noticeHonoring MDD; IP provisioning mode = IPv4
14/12/2023 16:57criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14/12/2023 16:57criticalCable Modem Reboot because of - HW or Power-On Reset
14/12/2023 14:38criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14/12/2023 14:38criticalCable Modem Reboot because of - HW or Power-On Reset
14/12/2023 14:02criticalReceived Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14/12/2023 09:51criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14/12/2023 09:40criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14/12/2023 09:39criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14/12/2023 09:39criticalCable Modem Reboot because of - HW or Power-On Reset
13/12/2023 23:16criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
13/12/2023 23:16criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
13/12/2023 23:16criticalCable Modem Reboot because of - HW or Power-On Reset
13/12/2023 07:22criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
13/12/2023 07:22criticalCable Modem Reboot because of - HW or Power-On Reset
12/12/2023 07:29criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
12/12/2023 07:28criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
12/12/2023 07:28criticalCable Modem Reboot because of - HW or Power-On Reset
12/12/2023 07:26criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
12/12/2023 06:09criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
12/12/2023 05:58criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
12/12/2023 05:57criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
12/12/2023 05:57criticalCable Modem Reboot because of - HW or Power-On Reset

 

21 REPLIES 21

iain123456
Joining in

Can anyone help?

Client62
Alessandro Volta

Share the stats from the Upstream and Downstream tabs, that will show the quality of the signal to the Hub.

iain123456
Joining in

3.0 Downstream channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
11700000001.539QAM 2565
21380000002.440QAM 2561
31460000002.540QAM 2562
41540000002.139QAM 2563
51620000001.739QAM 2564
61780000001.639QAM 2566
71860000001.640QAM 2567
8194000000240QAM 2568
92020000002.140QAM 2569
102100000002.440QAM 25610
112180000002.539QAM 25611
122260000002.339QAM 25612
132340000002.439QAM 25613
142420000002.239QAM 25614
152500000001.739QAM 25615
162580000001.339QAM 25616
172660000000.839QAM 25617
182740000000.639QAM 25618
192820000000.639QAM 25619
202900000000.839QAM 25620
212980000000.839QAM 25621
223060000000.939QAM 25622
233140000001.139QAM 25623
243220000001.239QAM 25624
253300000001.239QAM 25625
263380000001.639QAM 25626
273460000001.739QAM 25627
283540000001.839QAM 25628
293620000001.939QAM 25629
303700000001.939QAM 25630
313780000001.939QAM 25631

iain123456
Joining in

hannel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

06030000040.85120QAM 641
15370000040.85120QAM 642
24620000040.35120QAM 643
33940000040.35120QAM 644
43260000040.35120QAM 645
52360000040.35120QAM 646

iain123456
Joining in

Is there anyone who can help with this? I check the service update and at the moment it says:

Looks like there’s still an issue with your connection

but there are no known issues in my post code. It said this the other day, then when the 24 hours were up it said it was fixed, but it's not, I can't seem to get a technician to come out until it says this issue isn't fixed after 24 hours! 

Hi @iain123456 👋.

Thanks for reaching out to us. Apologies that you are having issues with the service in your area. If the service checker 👉 Service Status is saying that the outage is now clear, please run the same test again with the Hub in router mode, and all third party Hubs removed and operating off the VM network name and post the results for us to see. 

Sabrina

iain123456
Joining in

error

Roger_Gooner
Alessandro Volta

Before you repost your stats ensure that all connections between hub and wall socket are tight and you reboot your hub.

--
Note: My username is Roger_Gooner and not Alessandro Volta
Hub 5, TP-Link TL-SG108S 8-port gigabit switch, 360
My Broadband Ping - Roger's VM hub 5 broadband connection

iain123456
Joining in

forgive my ignorance, but is this graph bad?

iain123456_0-1703241534603.png