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user_j683iq
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12 Messages

Wednesday, November 27th, 2024 3:33 PM

Started Unicast Maintenance Ranging - No Response received - T3 time-out

Hi - I have ongoing issues with drop out, slow connection etc. Its super frustrating. Looking at the log on my modem I get numerous issues reported. This morning I am seeing;

Started Unicast Maintenance Ranging - No Response received - T3 time-out

I get different errors at different times. I worked with an agent online yesterday who was convinced my modem settings needed updating. He performed a firmware upgrade but this morning still having problems. Any suggestions? I have a tech out a few weeks ago and he ran a new line but still getting issues.

Thanks for the help.

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23 days ago

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EG

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2 months ago

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XfinityArmand

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1.9K Messages

1 month ago

Thank you so much for taking the time to reach out to Xfinity Support @user_j683iq!  We are so glad to hear from you and want to help in any way that we can to ensure that your service concerns are addressed.  No worries!  You have reached out to the right team to get things squared away.  Please feel free to shoot us a private message with your details so that we can get a look at what you have going on.  

 

To send a "direct message" / "private message" message to Xfinity Support:

 • Click "Sign In" if necessary

 • Click the "Direct Message" icon or https://forums.xfinity.com/direct-messaging 

 • Click the "New message" (pencil and paper) icon

 • The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there

 • As you are typing a drop-down list appears. Select "Xfinity Support" from that list

 • An "Xfinity Support" graphic replaces the "To:" line

 • Type your message in the text area near the bottom of the window

 • Press Enter to send it

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EG

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108K Messages

1 month ago

@user_j683iq 

Did you have a chance to try any of those tips at that link ? Please reply right here in your topic on these open / public help forums. There is no need to go private with this yet.

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user_j683iq

12 Messages

Thanks and sorry for the slow follow-up. I took a look at the tips and reviewed the modem info and everything seems to be in order, at least as far as SNR ratio, power levels etc. I dont see any issues.......expcept getting drop outs today again.

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24 days ago

0

EG

Expert

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108K Messages

24 days ago

Quite welcome ! May we see them here please. Please copy all of the text in its entirety of the *Downstream Power Levels*, the *SNR's* (Signal to Noise Ratios), and the *Upstream Power Level* numbers and paste them into your next post.


What is the exact make and model number of the modem / gateway device ?

Is this with a WiFi connection ?

Please also post those RF error log entries in their entirety (copy and paste them, don't post a screenshot) but redact the CM MAC and the CMTS MAC addresses for your privacy. They are considered to be personal information. The posting of personally identifying information is a violation of their forum guidelines. The forum bot will not allow your post to be seen publicly.

4

user_j683iq

12 Messages

Procedure Status Comment
Acquire Downstream Channel 549000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK
Security Enabled BPI+
DOCSIS Network Access Enabled Allowed

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24 days ago

0

user_j683iq

12 Messages

Channel ID Lock Status Modulation Frequency Power SNR/MER Corrected Uncorrectables
9 Locked QAM256 549000000 Hz 8 dBmV 41 dB 121 148
6 Locked QAM256 531000000 Hz 8 dBmV 41 dB 108 180
7 Locked QAM256 537000000 Hz 8 dBmV 41 dB 99 185
8 Locked QAM256 543000000 Hz 8 dBmV 41 dB 109 154
10 Locked QAM256 555000000 Hz 8 dBmV 41 dB 144 147
11 Locked QAM256 579000000 Hz 8 dBmV 41 dB 152 130
12 Locked QAM256 585000000 Hz 8 dBmV 41 dB 161 127
13 Locked QAM256 591000000 Hz 8 dBmV 41 dB 146 126
14 Locked QAM256 597000000 Hz 8 dBmV 41 dB 114 134
15 Locked QAM256 603000000 Hz 8 dBmV 41 dB 137 131
16 Locked QAM256 609000000 Hz 8 dBmV 40 dB 120 127
17 Locked QAM256 615000000 Hz 8 dBmV 40 dB 106 142
18 Locked QAM256 621000000 Hz 8 dBmV 40 dB 94 170
19 Locked QAM256 627000000 Hz 8 dBmV 40 dB 82 171
20 Locked QAM256 633000000 Hz 8 dBmV 40 dB 98 124
21 Locked QAM256 645000000 Hz 8 dBmV 40 dB 89 125
22 Locked QAM256 651000000 Hz 8 dBmV 40 dB 73 157
23 Locked QAM256 657000000 Hz 8 dBmV 40 dB 109 137
24 Locked QAM256 663000000 Hz 8 dBmV 40 dB 97 146
25 Locked QAM256 669000000 Hz 8 dBmV 40 dB 104 143
26 Locked QAM256 675000000 Hz 8 dBmV 39 dB 108 137
27 Locked QAM256 681000000 Hz 8 dBmV 40 dB 98 161
28 Locked QAM256 687000000 Hz 8 dBmV 40 dB 73 181
29 Locked QAM256 693000000 Hz 8 dBmV 40 dB 104 155
30 Locked QAM256 699000000 Hz 8 dBmV 40 dB 124 150
31 Locked QAM256 705000000 Hz 8 dBmV 40 dB 99 157
32 Locked QAM256 711000000 Hz 8 dBmV 40 dB 90 141
33 Locked QAM256 717000000 Hz 8 dBmV 40 dB 101 164
34 Locked QAM256 723000000 Hz 8 dBmV 40 dB 108 159
35 Locked QAM256 729000000 Hz 9 dBmV 40 dB 69 183
36 Locked QAM256 735000000 Hz 9 dBmV 40 dB 100 154
41 Locked OFDM PLC 762000000 Hz 9 dBmV 39 dB 203170530 662


Upstream Bonded Channels
Channel ID Lock Status US Channel Type Frequency Width Power
3 Locked SC-QAM 35600000 Hz 6400000 39.0 dBmV
4 Locked SC-QAM 29200000 Hz 6400000 39.0 dBmV
8 Locked SC-QAM 22800000 Hz 6400000 39.0 dBmV
9 Locked SC-QAM 16400000 Hz 6400000 39.0 dBmV
10 Locked SC-QAM 40400000 Hz 3200000 39.3 dBmV


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24 days ago

0

user_j683iq

12 Messages

Yes, its a wi-fi connection running via a netgear router from a Aris S33 modem.

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24 days ago

0

user_j683iq

12 Messages

13/12/2024
09:16:53

3

CMSTATUS:US_Diplexer_Mode_Change_Ignored:TLV-9, 42MHz.

13/12/2024
09:17:09

3

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.

13/12/2024
09:17:09

3

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.

13/12/2024
09:17:09

3

CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.

13/12/2024
09:30:19

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

13/12/2024
09:33:58

3

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

13/12/2024
09:34:00

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

13/12/2024
09:34:04

3

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

13/12/2024
09:34:05

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

13/12/2024
09:34:05

3

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

13/12/2024
09:34:17

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

13/12/2024
09:34:19

3

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

13/12/2024
09:34:26

3

CMSTATUS:US_Diplexer_Mode_Change_Ignored:TLV-9, 42MHz.

13/12/2024
09:34:34

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

13/12/2024
09:34:51

3

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.

13/12/2024
09:34:51

3

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.

13/12/2024
09:34:51

3

CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.

13/12/2024
14:24:37

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

14/12/2024
08:43:42

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

14/12/2024
21:44:04

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

14/12/2024
22:30:44

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

14/12/2024
22:34:27

3

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

14/12/2024
22:34:32

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

14/12/2024
22:34:34

3

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

14/12/2024
22:34:42

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

14/12/2024
22:34:43

3

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

14/12/2024
22:34:43

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

14/12/2024
22:34:44

3

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

14/12/2024
22:34:51

3

CMSTATUS:US_Diplexer_Mode_Change_Ignored:TLV-9, 42MHz.

14/12/2024
22:34:58

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

14/12/2024
22:35:12

3

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.

14/12/2024
22:35:12

3

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.

14/12/2024
22:35:12

3

CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.

14/12/2024
23:40:56

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

15/12/2024
10:17:54

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

15/12/2024
14:45:32

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
12:15:58

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:22

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:22

3

Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:22

3

16 consecutive T3 timeouts while trying to range on upstream channel 1;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:26

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:27

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:30

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:31

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:37

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:38

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:39

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:39

3

Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:39

3

16 consecutive T3 timeouts while trying to range on upstream channel 0;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:40

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:41

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:42

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:43

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
21:18:45

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

16/12/2024
23:11:59

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

18/12/2024
15:09:45

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

18/12/2024
16:08:03

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

18/12/2024
16:11:43

3

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

18/12/2024
16:11:45

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

18/12/2024
16:11:45

3

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

18/12/2024
16:11:47

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

18/12/2024
16:11:47

3

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

18/12/2024
16:11:52

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

18/12/2024
16:11:54

3

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

18/12/2024
16:12:02

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

18/12/2024
16:12:03

3

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

18/12/2024
16:12:09

3

CMSTATUS:US_Diplexer_Mode_Change_Ignored:TLV-9, 42MHz.

18/12/2024
16:12:15

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

18/12/2024
16:12:33

3

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.

18/12/2024
16:12:33

3

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.

18/12/2024
16:12:33

3

CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.

31/12/1969
19:00:15

3

CMSTATUS:US_Diplexer_Mode_Change:Init, 5-42MHz.

31/12/1969
19:00:20

3

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

31/12/1969
19:00:23

3

CMSTATUS:US_Diplexer_Mode_Change_Ignored:TLV-9, 42MHz.

31/12/1969
19:00:36

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

31/12/1969
19:00:51

3

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.

31/12/1969
19:00:51

3

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.

31/12/1969
19:00:51

3

CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.

31/12/1969
19:00:15

3

CMSTATUS:US_Diplexer_Mode_Change:Init, 5-42MHz.

31/12/1969
19:00:19

3

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

31/12/1969
19:00:21

3

CMSTATUS:US_Diplexer_Mode_Change_Ignored:TLV-9, 42MHz.

31/12/1969
19:00:24

3

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

31/12/1969
19:00:39

3

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.

31/12/1969
19:00:39

3

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.

31/12/1969
19:00:39

3

CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.

31/12/1969
19:00:15

3

CMSTATUS:US_Diplexer_Mode_Change:Init, 5-42MHz.

31/12/1969
19:00:19

3

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

31/12/1969
19:00:21

3

CMSTATUS:US_Diplexer_Mode_Change_Ignored:TLV-9, 42MHz.

31/12/1969
19:00:26

6

Honoring MDD; IP provisioning mode = IPv6

31/12/1969
19:00:34

3

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.

31/12/1969
19:00:34

3

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.

31/12/1969
19:00:34

3

CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.

20/12/2024
09:39:36

6

DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

20/12/2024
09:54:28

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

20/12/2024
11:27:18

3

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:ab;CMTS-MAC=**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

20/12/2024
11:42:54

3

Successful LAN WebGUI login from **:**:**:**:**on 24/12/20 at 11:42 AM.

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24 days ago

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EG

Expert

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108K Messages

24 days ago

You didn't post the error log entries from the S33. For a test, does a computer that is hardwired directly to the Netgear router device with an ethernet cable have the same problem ? With this test, we are trying to isolate this down to being either a WiFi-only problem or a problem with the general connection to the Comcast system which would of course affect both.

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user_j683iq

12 Messages

Just posted above. I havent tried a direct connection to the modem......but when I get the issue and check Xfinity app via LTE Xfinity reports my system is down/not connected.....which leads me to believe its a modem/cable issue. Unless the router is somehow causing the modem to fail?? If thats even possible.

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24 days ago

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EG

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108K Messages

24 days ago

Sounds about right. The error log entries are ugly ! Showing sync losses with the system. Really need that hardwired test to nail it down.

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user_j683iq

12 Messages

I've read that others have been succesful by installing a 6db attenuator......since the cause might be power/signal surges on the cable. Is that worth a try?

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24 days ago

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user_j683iq

12 Messages

If I do a hardwired test, what am I looking for? Some difference in modem performance?

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24 days ago

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user_j683iq

12 Messages

And I appreciate your help and insight :-)

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24 days ago

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EG

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@user_j683iq​ 

Yes. It's worth a shot.

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.

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24 days ago

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EG

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108K Messages

24 days ago

You're welcome ! So you're looking to see if you still have the dropout problems that you described in your original post.

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user_j683iq

12 Messages

23 days ago

Well still getting drop outs direct connected. I have however installed a 6db attenuator, I read somewhere that was effective for someone with similar issues. So far so good and I seem to be getting faster speed also. Hopefully this is the fix.

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user_j683iq

12 Messages

23 days ago

And my modem is reporting 0 corrected and 0 uncorrectables......! Sounds promising :)

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