Synchronization loss (RCS Partial Servce, T3 timeout)

[adept]

I am making this post to make my conversations with the support agents easier.

I had this same issue at the beginning of May, five weeks ago, and it was resolved by the changes made in the cabinet on the street. Now the issues are back again.

My Hub 3 loses connection to the Virgin network every 2-3 hours, and sometimes - up to 2-10 times in a quick succession (say, every two to five minutes).

BQM Link for today 

Live BQM data 

I am trying to arrange engineer's visit to get this sorted.

Cable Modem Status
Item Status Comments
Acquired Downstream Channel (Hz) 
139000000
Locked
Ranged Upstream Channel (Hz) 
49600000
Locked
Provisioning State 
Online

Downstream bonded channels
Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1 139000000 1.2 37 256 qam 1
2 147000000 0.7 38 256 qam 2
3 155000000 0.5 38 256 qam 3
4 163000000 0 38 256 qam 4
5 171000000 -0.2 38 256 qam 5
6 179000000 -0.7 38 256 qam 6
7 187000000 -1 38 256 qam 7
8 195000000 -1.4 38 256 qam 8
9 203000000 -1.7 38 256 qam 9
10 211000000 -2.2 38 256 qam 10
11 219000000 -2.2 38 256 qam 11
12 227000000 -2.7 37 256 qam 12
13 235000000 -3.2 37 256 qam 13
14 243000000 -3.5 38 256 qam 14
15 251000000 -3 38 256 qam 15
16 259000000 -3 38 256 qam 16
17 267000000 -2.9 38 256 qam 17
18 275000000 -3 38 256 qam 18
19 283000000 -2.9 38 256 qam 19
20 291000000 -3 37 256 qam 20
21 299000000 -2.7 37 256 qam 21
22 307000000 -2.7 38 256 qam 22
23 315000000 -2.9 38 256 qam 23
24 323000000 -3 38 256 qam 24


Downstream bonded channels
Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1 Locked 37.9 30273538 10062782
2 Locked 38.6 28065690 8307919
3 Locked 38.6 18168100 3934431
4 Locked 38.6 13943241 2117710
5 Locked 38.6 13391902 2005762
6 Locked 38.9 12820275 1875648
7 Locked 38.6 11910414 1672208
8 Locked 38.9 10647789 1462566
9 Locked 38.6 10150961 1362580
10 Locked 38.6 10813289 1391019
11 Locked 38.6 9649980 1179698
12 Locked 37.6 8220533 993483
13 Locked 37.3 7773413 926421
14 Locked 38.6 7402449 879636
15 Locked 38.9 6448861 723681
16 Locked 38.6 5479726 553166
17 Locked 38.6 4900732 449112
18 Locked 38.6 4464167 359845
19 Locked 38.6 4026362 273760
20 Locked 37.9 3801447 228281
21 Locked 37.6 3633859 198859
22 Locked 38.6 3133340 158027
23 Locked 38.9 2664741 131952
24 Locked 38.9 2310968 118392

Upstream bonded channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 49600000 44.3 5120 64 qam 1
2 23600115 42.5 5120 16 qam 5
3 43100000 42.3 5120 64 qam 2
4 30100000 43 5120 64 qam 4
5 36600000 44 5120 64 qam 3


Upstream bonded channels
Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
1 ATDMA 0 0 7 0
2 ATDMA 0 0 141 0
3 ATDMA 0 0 3 0
4 ATDMA 0 0 44 0
5 ATDMA 0 0 10 0

General Configuration
Network access 
Allowed
Maximum Number of CPEs 
1
Baseline Privacy 
Enabled
DOCSIS Mode 
Docsis30
Config file 
cmreg-vmdg505-bbt053+voc-b.cm


Primary Downstream Service Flow
SFID 27446
Max Traffic Rate 575000085
Max Traffic Burst 42600
Min Traffic Rate 0


Primary Upstream Service Flow
SFID 27445
Max Traffic Rate 55000085
Max Traffic Burst 42600
Min Traffic Rate 0
Max Concatenated Burst 42600
Scheduling Type BestEffort

Network Log
Time Priority Description
13/06/2023 09:31:8 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 09:30:39 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 09:30:38 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 09:22:1 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 09:00:13 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 08:54:30 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 08:54:26 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 08:37:30 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 07:18:23 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 07:18:23 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 07:18:23 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 07:18:20 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 07:18:16 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 07:17:1 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 07:17:1 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 07:16:51 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 07:16:51 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 07:13:58 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 07:13:17 Warning! Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/06/2023 04:59:50 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

[adept]

My post from May about the same issue

[Matthew_ML]

Hey adept, thank you for reaching out and I am sorry to hear this.

Since this post I can see you've spoke to team since this post did they manage to get this resolved? Cheers 

[adept]

Got and engineer visit who plugged me into different port in the street cabinet and upgraded me from Hub3 to Hub5. So far so good! (knock on wood)