Broadband dropping out all the time

Question

I've be struggling with my broadband dropping out for quite some time now. I'm constantly getting T3 errors which Spike my ping then eventually knock me offline. Its now happening multiple times per hour. I've previously spoke to someone whom sent me out a new router but the problem is still persisting.

So far today I've had 8 T3 errors since resetting my router at 11:34. (See below)

Could you advise me where to go from here

08/03/2025 12:02:9 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=c0:05:c2:0e:7b:f3;CMTS-MAC=00:01:5c:82:6c:d1;CM-QOS=1.1;CM-VER=3.0;
08/03/2025 12:02:6 Warning! RCS Partial Service;CM-MAC=c0:05:c2:0e:7b:f3;CMTS-MAC=00:01:5c:82:6c:d1;CM-QOS=1.1;CM-VER=3.0;
08/03/2025 12:01:55 notice LAN login Success;CM-MAC=c0:05:c2:0e:7b:f3;CMTS-MAC=00:01:5c:82:6c:d1;CM-QOS=1.1;CM-VER=3.0;
08/03/2025 12:01:53 Warning! LAN login FAILED : Incorrect Username / Password / ConnectionType;CM-MAC=c0:05:c2:0e:7b:f3;CMTS-MAC=00:01:5c:82:6c:d1;CM-QOS=1.1;CM-VER=3.0;
08/03/2025 12:01:37 Warning! RCS Partial Service;CM-MAC=c0:05:c2:0e:7b:f3;CMTS-MAC=00:01:5c:82:6c:d1;CM-QOS=1.1;CM-VER=3.0;
08/03/2025 12:00:57 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=c0:05:c2:0e:7b:f3;CMTS-MAC=00:01:5c:82:6c:d1;CM-QOS=1.1;CM-VER=3.0;
08/03/2025 11:46:48 Warning! RCS Partial Service;CM-MAC=c0:05:c2:0e:7b:f3;CMTS-MAC=00:01:5c:82:6c:d1;CM-QOS=1.1;CM-VER=3.0;
08/03/2025 11:36:19 notice LAN login Success;CM-MAC=c0:05:c2:0e:7b:f3;CMTS-MAC=00:01:5c:82:6c:d1;CM-QOS=1.1;CM-VER=3.0;
08/03/2025 11:35:42 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=c0:05:c2:0e:7b:f3;CMTS-MAC=00:01:5c:82:6c:d1;CM-QOS=1.1;CM-VER=3.0;
08/03/2025 11:35:32 critical No Ranging Response received - T3 time-out;CM-MAC=c0:05:c2:0e:7b:f3;CMTS-MAC=00:01:5c:82:6c:d1;CM-QOS=1.1;CM-VER=3.0;
08/03/2025 11:34:51 Warning! RCS Partial Service;CM-MAC=c0:05:c2:0e:7b:f3;CMTS-MAC=00:01:5c:82:6c:d1;CM-QOS=1.1;CM-VER=3.0;

Adduxi · Answer

Try checking with Area faults on &nbsp;0800 561 0061 or if you have a VM landline 150 as small local faults are not listed on the VM status page.Post the power levels, Pre and PostRS errors and network log from the Hub. &nbsp;Setup a BQM to monitor your circuit www.thinkbroadband.com/ping &nbsp;Also run a wired speed test on www.samknows.com/realspeed and post the results.Once done we can comment.

phild19 · Answer

No Area Faults, my speed both wired/wireless is perfectly fine when I'm connected im just dropping out multiple times per hour (7 this past hour)Channel &nbsp; &nbsp;Locked Status &nbsp; &nbsp;RxMER (dB) &nbsp; &nbsp;Pre RS Errors &nbsp; &nbsp;Post RS Errors1 &nbsp; &nbsp;Locked &nbsp; &nbsp;38.9 &nbsp; &nbsp;113133 &nbsp; &nbsp;257432 &nbsp; &nbsp;Locked &nbsp; &nbsp;38.6 &nbsp; &nbsp;236861 &nbsp; &nbsp;1191513 &nbsp; &nbsp;Locked &nbsp; &nbsp;38.9 &nbsp; &nbsp;203460 &nbsp; &nbsp;738744 &nbsp; &nbsp;Locked &nbsp; &nbsp;38.9 &nbsp; &nbsp;51798 &nbsp; &nbsp;56505 &nbsp; &nbsp;Locked &nbsp; &nbsp;38.9 &nbsp; &nbsp;48432 &nbsp; &nbsp;47276 &nbsp; &nbsp;Locked &nbsp; &nbsp;38.9 &nbsp; &nbsp;47997 &nbsp; &nbsp;40817 &nbsp; &nbsp;Locked &nbsp; &nbsp;38.9 &nbsp; &nbsp;46784 &nbsp; &nbsp;33458 &nbsp; &nbsp;Locked &nbsp; &nbsp;38.9 &nbsp; &nbsp;39293 &nbsp; &nbsp;30649 &nbsp; &nbsp;Locked &nbsp; &nbsp;38.9 &nbsp; &nbsp;44118 &nbsp; &nbsp;341910 &nbsp; &nbsp;Locked &nbsp; &nbsp;38.6 &nbsp; &nbsp;27391 &nbsp; &nbsp;191511 &nbsp; &nbsp;Locked &nbsp; &nbsp;38.9 &nbsp; &nbsp;19074 &nbsp; &nbsp;287512 &nbsp; &nbsp;Locked &nbsp; &nbsp;40.3 &nbsp; &nbsp;17378 &nbsp; &nbsp;210113 &nbsp; &nbsp;Locked &nbsp; &nbsp;38.9 &nbsp; &nbsp;18680 &nbsp; &nbsp;195514 &nbsp; &nbsp;Locked &nbsp; &nbsp;40.9 &nbsp; &nbsp;15741 &nbsp; &nbsp;205115 &nbsp; &nbsp;Locked &nbsp; &nbsp;40.3 &nbsp; &nbsp;11902 &nbsp; &nbsp;192716 &nbsp; &nbsp;Locked &nbsp; &nbsp;40.3 &nbsp; &nbsp;9633 &nbsp; &nbsp;168917 &nbsp; &nbsp;Locked &nbsp; &nbsp;40.3 &nbsp; &nbsp;10114 &nbsp; &nbsp;138218 &nbsp; &nbsp;Locked &nbsp; &nbsp;40.3 &nbsp; &nbsp;9548 &nbsp; &nbsp;157919 &nbsp; &nbsp;Locked &nbsp; &nbsp;40.3 &nbsp; &nbsp;8864 &nbsp; &nbsp;175120 &nbsp; &nbsp;Locked &nbsp; &nbsp;40.3 &nbsp; &nbsp;7346 &nbsp; &nbsp;184821 &nbsp; &nbsp;Locked &nbsp; &nbsp;40.3 &nbsp; &nbsp;6365 &nbsp; &nbsp;152722 &nbsp; &nbsp;Locked &nbsp; &nbsp;40.9 &nbsp; &nbsp;5847 &nbsp; &nbsp;179523 &nbsp; &nbsp;Locked &nbsp; &nbsp;38.9 &nbsp; &nbsp;6024 &nbsp; &nbsp;149724 &nbsp; &nbsp;Locked &nbsp; &nbsp;40.3 &nbsp; &nbsp;6897 &nbsp; &nbsp;1359Downstream bonded channelsChannel &nbsp; &nbsp;Frequency (Hz) &nbsp; &nbsp;Power (dBmV) &nbsp; &nbsp;SNR (dB) &nbsp; &nbsp;Modulation &nbsp; &nbsp;Channel ID1 &nbsp; &nbsp;139000000 &nbsp; &nbsp;1.4 &nbsp; &nbsp;38 &nbsp; &nbsp;256 qam &nbsp; &nbsp;12 &nbsp; &nbsp;147000000 &nbsp; &nbsp;1.9 &nbsp; &nbsp;38 &nbsp; &nbsp;256 qam &nbsp; &nbsp;23 &nbsp; &nbsp;155000000 &nbsp; &nbsp;1.9 &nbsp; &nbsp;38 &nbsp; &nbsp;256 qam &nbsp; &nbsp;34 &nbsp; &nbsp;163000000 &nbsp; &nbsp;2 &nbsp; &nbsp;38 &nbsp; &nbsp;256 qam &nbsp; &nbsp;45 &nbsp; &nbsp;171000000 &nbsp; &nbsp;2 &nbsp; &nbsp;38 &nbsp; &nbsp;256 qam &nbsp; &nbsp;56 &nbsp; &nbsp;179000000 &nbsp; &nbsp;2.5 &nbsp; &nbsp;38 &nbsp; &nbsp;256 qam &nbsp; &nbsp;67 &nbsp; &nbsp;187000000 &nbsp; &nbsp;2.5 &nbsp; &nbsp;38 &nbsp; &nbsp;256 qam &nbsp; &nbsp;78 &nbsp; &nbsp;195000000 &nbsp; &nbsp;2.7 &nbsp; &nbsp;38 &nbsp; &nbsp;256 qam &nbsp; &nbsp;89 &nbsp; &nbsp;203000000 &nbsp; &nbsp;2.5 &nbsp; &nbsp;38 &nbsp; &nbsp;256 qam &nbsp; &nbsp;910 &nbsp; &nbsp;275000000 &nbsp; &nbsp;1.5 &nbsp; &nbsp;38 &nbsp; &nbsp;256 qam &nbsp; &nbsp;1811 &nbsp; &nbsp;283000000 &nbsp; &nbsp;3 &nbsp; &nbsp;38 &nbsp; &nbsp;256 qam &nbsp; &nbsp;1912 &nbsp; &nbsp;291000000 &nbsp; &nbsp;3.7 &nbsp; &nbsp;40 &nbsp; &nbsp;256 qam &nbsp; &nbsp;2013 &nbsp; &nbsp;299000000 &nbsp; &nbsp;4.6 &nbsp; &nbsp;38 &nbsp; &nbsp;256 qam &nbsp; &nbsp;2114 &nbsp; &nbsp;307000000 &nbsp; &nbsp;4.4 &nbsp; &nbsp;40 &nbsp; &nbsp;256 qam &nbsp; &nbsp;2215 &nbsp; &nbsp;315000000 &nbsp; &nbsp;4.5 &nbsp; &nbsp;40 &nbsp; &nbsp;256 qam &nbsp; &nbsp;2316 &nbsp; &nbsp;323000000 &nbsp; &nbsp;5.1 &nbsp; &nbsp;40 &nbsp; &nbsp;256 qam &nbsp; &nbsp;2417 &nbsp; &nbsp;331000000 &nbsp; &nbsp;5.1 &nbsp; &nbsp;40 &nbsp; &nbsp;256 qam &nbsp; &nbsp;2518 &nbsp; &nbsp;339000000 &nbsp; &nbsp;5.4 &nbsp; &nbsp;40 &nbsp; &nbsp;256 qam &nbsp; &nbsp;2619 &nbsp; &nbsp;347000000 &nbsp; &nbsp;5.5 &nbsp; &nbsp;40 &nbsp; &nbsp;256 qam &nbsp; &nbsp;2720 &nbsp; &nbsp;355000000 &nbsp; &nbsp;6 &nbsp; &nbsp;40 &nbsp; &nbsp;256 qam &nbsp; &nbsp;2821 &nbsp; &nbsp;363000000 &nbsp; &nbsp;5.9 &nbsp; &nbsp;40 &nbsp; &nbsp;256 qam &nbsp; &nbsp;2922 &nbsp; &nbsp;371000000 &nbsp; &nbsp;6 &nbsp; &nbsp;40 &nbsp; &nbsp;256 qam &nbsp; &nbsp;3023 &nbsp; &nbsp;379000000 &nbsp; &nbsp;5.5 &nbsp; &nbsp;38 &nbsp; &nbsp;256 qam &nbsp; &nbsp;3124 &nbsp; &nbsp;387000000 &nbsp; &nbsp;4.9 &nbsp; &nbsp;40 &nbsp; &nbsp;256 qam &nbsp; &nbsp;32

phild19 · Answer

Channel &nbsp; &nbsp;Channel Type &nbsp; &nbsp;T1 Timeouts &nbsp; &nbsp;T2 Timeouts &nbsp; &nbsp;T3 Timeouts &nbsp; &nbsp;T4 Timeouts1 &nbsp; &nbsp;ATDMA &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;02 &nbsp; &nbsp;ATDMA &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;1 &nbsp; &nbsp;03 &nbsp; &nbsp;ATDMA &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;1 &nbsp; &nbsp;04 &nbsp; &nbsp;ATDMA &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;05 &nbsp; &nbsp;ATDMA &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;33 &nbsp; &nbsp;0

phild19 · Answer

Upstream bonded channelsChannel &nbsp; &nbsp;Frequency (Hz) &nbsp; &nbsp;Power (dBmV) &nbsp; &nbsp;Symbol Rate (ksps) &nbsp; &nbsp;Modulation &nbsp; &nbsp;Channel ID1 &nbsp; &nbsp;36600000 &nbsp; &nbsp;43.8 &nbsp; &nbsp;5120 &nbsp; &nbsp;64 qam &nbsp; &nbsp;32 &nbsp; &nbsp;43100000 &nbsp; &nbsp;43.5 &nbsp; &nbsp;5120 &nbsp; &nbsp;64 qam &nbsp; &nbsp;23 &nbsp; &nbsp;30100000 &nbsp; &nbsp;43.8 &nbsp; &nbsp;5120 &nbsp; &nbsp;64 qam &nbsp; &nbsp;44 &nbsp; &nbsp;49600000 &nbsp; &nbsp;44 &nbsp; &nbsp;5120 &nbsp; &nbsp;64 qam&nbsp; &nbsp;&nbsp;

Tudor · Answer

There is one of the upstairs channels missing, number 5.

Forum Discussion

Broadband dropping out all the time

Upstream bonded channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 36600000 43.8 5120 64 qam 3
2 43100000 43.5 5120 64 qam 2
3 30100000 43.8 5120 64 qam 4
4 49600000 44 5120 64 qam

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Broadband dropping out all the time

Upstream bonded channelsChannel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID1 36600000 43.8 5120 64 qam 32 43100000 43.5 5120 64 qam 23 30100000 43.8 5120 64 qam 44 49600000 44 5120 64 qam

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Upstream bonded channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 36600000 43.8 5120 64 qam 3
2 43100000 43.5 5120 64 qam 2
3 30100000 43.8 5120 64 qam 4
4 49600000 44 5120 64 qam