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user_bf3aed
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Sunday, January 8th, 2023 9:47 PM

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Internet going in/out due to "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing"

Seeking help on my internet, which keeps dropping at random times. My network has been working for about 3 years without an issue.... until about a week ago. Currently installed is a Motorola MB8611 modem on a 500 mb/s plan. A technician was out here yesterday replacing the line coming from the box, which did not solve the problem. Based on other forums advise I have checked all coax cables for damage and have found no issues. I am sorry if any of my terminology is off, I am a novice when it comes to this. 

Attached below is both the Event log (over the past 24hrs) and channel log.

Thanks in advance for any help you provide.

 Event Log  
  
    Time    Priority    Description 
    Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-9, 5-42MHz.
    Time Not Established   Critical (3)   No Ranging Response received - T3 time-out;
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:Fixed Initial, 5-42MHz.
    Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-9, 5-42MHz.
    Time Not Established   Critical (3)   No Ranging Response received - T3 time-out;
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:Fixed Initial, 5-42MHz.
    Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-9, 5-42MHz.
    Time Not Established   Critical (3)   No Ranging Response received - T3 time-out;
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:Fixed Initial, 5-42MHz.
    Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-9, 5-42MHz.
    Time Not Established   Critical (3)   No Ranging Response received - T3 time-out
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:Fixed Initial, 5-42MHz.
    Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-9, 5-42MHz.
    Time Not Established   Critical (3)   No Ranging Response received - T3 time-out
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:Fixed Initial, 5-42MHz.
    Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-9, 5-42MHz.
    Time Not Established   Critical (3)   No Ranging Response received - T3 time-out
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:Fixed Initial, 5-42MHz.
    Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-9, 5-42MHz.
    Time Not Established   Critical (3)   No Ranging Response received - T3 time-out
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:Fixed Initial, 5-42MHz.
    Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-9, 5-42MHz.
    Time Not Established   Critical (3)   No Ranging Response received - T3 time-out;
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:Fixed Initial, 5-42MHz.
    Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-9, 5-42MHz.
    Time Not Established   Critical (3)   No Ranging Response received - T3 time-out;
    Time Not Established   Critical (3)   Started Unicast Maintenance Ranging - No Response received - T3 time-out;
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:Fixed Initial, 5-42MHz.
    Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-9, 5-42MHz.
    Time Not Established   Critical (3)   No Ranging Response received - T3 time-out;
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:Fixed Initial, 5-42MHz.
    Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-9, 5-42MHz.
    Time Not Established   Critical (3)   No Ranging Response received - T3 time-out;
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:Fixed Initial, 5-42MHz.
    Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-9, 5-42MHz.
    Time Not Established   Critical (3)   No Ranging Response received - T3 time-out;
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:Fixed Initial, 5-42MHz.
    Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-9, 5-42MHz.
    Time Not Established   Critical (3)   No Ranging Response received - T3 time-out;
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:Fixed Initial, 5-42MHz.
    Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-9, 5-42MHz.
    Time Not Established   Critical (3)   No Ranging Response received - T3 time-out;
    Time Not Established   Notice (6)   Honoring MDD; IP provisioning mode = IPv6
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.
    Time Not Established   Critical (3)   CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.
    Time Not Established   Critical (3)   CMSTATUS:US_Diplexer_Mode_Change:TLV-84.1, 5-42MHz.
    15:23:26
Sun Jan 8 2023		   Notice (6)   DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.

 Downstream Bonded Channels  
  
   Channel Lock Status Modulation Channel ID Freq. (MHz) Pwr (dBmV) SNR (dB) Corrected Uncorrected
   1 Locked QAM256 20 501.0 8.6 40.4 13 28
   2 Locked QAM256 8 411.0 9.6 41.1 16 25
   3 Locked QAM256 9 417.0 9.6 41.0 15 26
   4 Locked QAM256 10 435.0 9.1 40.7 17 26
   5 Locked QAM256 11 441.0 8.8 40.6 15 27
   6 Locked QAM256 12 453.0 8.9 40.7 16 26
   7 Locked QAM256 13 459.0 9.0 40.7 17 25
   8 Locked QAM256 14 465.0 9.1 40.6 18 21
   9 Locked QAM256 15 471.0 9.2 40.7 19 24
   10 Locked QAM256 16 477.0 9.1 40.7 20 22
   11 Locked QAM256 17 483.0 9.0 40.7 14 28
   12 Locked QAM256 18 489.0 8.8 40.6 13 30
   13 Locked QAM256 19 495.0 8.8 40.5 16 26
   14 Locked QAM256 21 507.0 8.5 40.5 26 16
   15 Locked QAM256 22 513.0 8.7 40.5 18 23
   16 Locked QAM256 23 519.0 8.7 40.4 14 27
   17 Locked QAM256 24 525.0 8.9 40.5 16 25
   18 Locked QAM256 25 531.0 8.7 40.2 23 20
   19 Locked QAM256 26 537.0 8.6 40.3 11 29
   20 Locked QAM256 27 543.0 8.4 40.3 14 27
   21 Locked QAM256 28 549.0 8.3 40.1 17 24
   22 Locked QAM256 29 555.0 8.4 40.1 15 27
   23 Locked QAM256 30 561.0 8.4 40.2 17 23
   24 Locked QAM256 31 567.0 8.5 40.1 13 27
   25 Locked QAM256 32 573.0 8.7 40.1 21 19
   26 Locked QAM256 33 579.0 8.8 40.1 15 25
   27 Locked QAM256 34 585.0 8.9 40.0 17 25
   28 Locked QAM256 35 591.0 8.6 40.0 16 26
   29 Locked QAM256 36 597.0 8.5 39.9 17 26
   30 Locked QAM256 37 603.0 8.1 39.9 15 28
   31 Locked QAM256 38 609.0 7.8 39.8 14 27
   32 Locked OFDM PLC 48 722.0 9.1 39.3 22887599 14

Question

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Updated 

2 years ago

 • Edited

5.2K

12

0

EG

Expert

 • 

110.3K Messages

2 years ago

Please redact all of the CM MAC and the CMTS MAC addresses in your error log entries for your privacy. They are considered to be personal information. The posting of personally identifiable information is a violation of their forum guidelines. The forum bot will not allow your post to be seen publically. It flagged your post as "Private".

1

0

user_bf3aed

Visitor

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3 Messages

@EG​ Thanks for the heads up! How about now.... all good?

2 years ago

0

EG

Expert

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110.3K Messages

2 years ago

@user_bf3aed  Yes. Your post has been made to be publicly viewable again.

2

0

user_999715

Visitor

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2 Messages

@EG​  is there a fix?

2 years ago

0

CCYvonne

Contributor

 • 

340 Messages

Hello @user_999715 We appreciate you bringing the issue with dropped connection to our attention. Our team can certainly assist. Can you please send a direct message with your full name and full address?

 

To send a "Direct Message" to Xfinity Support:

 

Click "Sign In" if necessary

Click the "Direct Messaging" icon

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

I no longer work for Comcast. 

2 years ago

0

user_999715

Visitor

 • 

2 Messages

2 years ago

i am having this exact same issue. Internet keeps dropping every few hours for a few minutes. Event log for my Motorola modem shows the same errors.

0

0

user_3c7aac

Visitor

 • 

3 Messages

2 years ago

Same thing is happening to me for the last month or so.

Please advise how to fix.

1

0

CCChristian

Contributor

 • 

127 Messages

Hello @user_3c7aac thank you for sharing that you are also experiencing this issue. We are more than happy to help get this resolved for you. 

 

I don't want to repeat any troubleshooting steps that you have already taken. Can you please share with me what you have already tried on your end? 

I no longer work for Comcast. 

2 years ago

0

user_bf3aed

Visitor

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3 Messages

2 years ago

@XfinityAntoine I saw you helping a similar post. Any chance you could take a look at this? Thanks!

1

0

XfinityAnthonyT

Official Employee

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1K Messages

No worries about being a novice! Everyone starts somewhere, did anything change with your set up last week when the issue began or was it totally out of the blue?

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

2 years ago

0

user_a

Visitor

 • 

1 Message

2 years ago

I'm experiencing the exact same issue. My modem has been up for over a month without issue and woke up this morning to "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing" errors and no down stream connections. I initially thought Comcast pushed a firmware update, but I've confirmed that is not the case.

My research this morning has led to a lot of RMA modem topics. I have a line tech coming out to inspect but I feel this is 100% a modem issue. It seems Comcast and this modem have lost of issues. I'll be RMA'ing this modem while I search for an appropriate replacement from another vendor. 

Background: 15 yrs network engineer for fortune 500 IT company. Full Ubiquiti backend infrastructure. 

1

0

CCJennifer

Problem Solver

 • 

743 Messages

Hello @user_a! We'll be happy to work some troubleshooting with you or at least follow up with you after your appointment to see how it goes. If you'd like, please send us a direct message with your first and last name and your full address. 

 

• Click "Sign In" if necessary


• Click the "Direct Message" icon (upper right corner of this page)


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


• Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list


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


• Press Enter to send your message

I no longer work for Comcast.

2 years ago

0

user_9c2393

Visitor

 • 

1 Message

2 years ago

I am having this same exact issue with this modem. Very frustrating. This has been happening for the last few weeks. 

1

0

CCJennifer

Problem Solver

 • 

743 Messages

Hello @user_9c2393! We hate to hear you're having trouble. Could you please send our team a direct message with your full name and full address?

 

• Click "Sign In" if necessary


• Click the "Direct Message" icon (upper right corner of this page)


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


• Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list


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


• Press Enter to send your message

I no longer work for Comcast.

2 years ago

0

user_kta3lb

Visitor

 • 

19 Messages

2 years ago

Same here. Not sure if it's better to start a new thread or get all the complaints in one place!

0

0

maloney40

New Poster

 • 

3 Messages

2 years ago

I also have a Motorola Modem, MB8611 and have internet drops as well. I had a service technician out yesterday and said everything was good up until the modem.

Time 

 

Priority 

 

Description 

Time Not Established

 

Critical (3)

 

CMSTATUS:US_Diplexer_Mode_Change:Fixed Initial, 5-42MHz.

Time Not Established

 

Critical (3)

 

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

Time Not Established

 

Critical (3)

 

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-21.2, 258MHz.

Time Not Established

 

Critical (3)

 

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-21.3, 1002MHz.

Time Not Established

 

Critical (3)

 

CMSTATUS:US_Diplexer_Mode_Change:TLV-21.1, 5-42MHz.

Time Not Established

 

Critical (3)

 

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.

Time Not Established

 

Critical (3)

 

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.

Time Not Established

 

Critical (3)

 

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

12:49:22
Fri Jan 13 2023

 

Critical (3)

 

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

Time Not Established

 

Critical (3)

 

CMSTATUS:US_Diplexer_Mode_Change:Fixed Initial, 5-42MHz.

Time Not Established

 

Critical (3)

 

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

Time Not Established

 

Critical (3)

 

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-21.2, 258MHz.

Time Not Established

 

Critical (3)

 

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-21.3, 1002MHz.

Time Not Established

 

Critical (3)

 

CMSTATUS:US_Diplexer_Mode_Change:TLV-21.1, 5-42MHz.

Time Not Established

 

Notice (6)

 

Honoring MDD; IP provisioning mode = IPv6

Time Not Established

 

Critical (3)

 

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.2, 108MHz.

Time Not Established

 

Critical (3)

 

CMSTATUS:DS_Diplexer_Mode_Change_Ignored:TLV-84.3, 1002MHz.

Time Not Established

 

Critical (3)

 

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

14:48:21
Fri Jan 13 2023

 

Notice (6)

 

DS 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;

14:48:27
Fri Jan 13 2023

 

Warning (5)

 

REG-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;

14:48:28
Fri Jan 13 2023

 

Warning (5)

 

RNG-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;

14:48:28
Fri Jan 13 2023

 

Warning (5)

 

Dynamic Range Window violation


Downstream Bonded Channels  
  
   Channel Lock Status Modulation Channel ID Freq. (MHz) Pwr (dBmV) SNR (dB) Corrected Uncorrected
   1 Locked QAM256 13 477.0 2.8 41.3 0 0
   2 Locked QAM256 1 393.0 2.3 41.3 0 0
   3 Locked QAM256 2 399.0 2.5 41.3 0 0
   4 Locked QAM256 3 405.0 2.5 41.4 0 0
   5 Locked QAM256 4 411.0 2.4 41.3 0 0
   6 Locked QAM256 5 417.0 2.5 41.4 0 0
   7 Locked QAM256 6 423.0 2.5 41.4 0 0
   8 Locked QAM256 7 429.0 2.4 41.2 0 0
   9 Locked QAM256 8 435.0 2.5 41.3 0 0
   10 Locked QAM256 9 453.0 2.5 41.4 0 0
   11 Locked QAM256 10 459.0 2.5 41.3 0 0
   12 Locked QAM256 11 465.0 2.5 41.3 0 0
   13 Locked QAM256 12 471.0 2.6 41.4 0 0
   14 Locked QAM256 14 483.0 2.8 41.3 0 0
   15 Locked QAM256 15 489.0 2.9 41.2 0 0
   16 Locked QAM256 16 495.0 2.8 41.3 0 0
   17 Locked QAM256 17 507.0 2.5 41.1 0 0
   18 Locked QAM256 18 513.0 2.4 41.0 0 0
   19 Locked QAM256 19 519.0 2.2 40.9 0 0
   20 Locked QAM256 20 525.0 2.2 40.9 0 0
   21 Locked QAM256 21 531.0 2.3 40.9 0 0
   22 Locked QAM256 22 537.0 2.4 40.8 0 0
   23 Locked QAM256 23 543.0 2.5 40.6 0 0
   24 Locked QAM256 24 549.0 2.8 40.7 0 0
   25 Locked QAM256 25 555.0 3.1 40.7 0 0
   26 Locked QAM256 26 561.0 3.2 40.8 0 0
   27 Locked QAM256 27 567.0 3.4 40.8 0 0
   28 Locked QAM256 28 573.0 3.6 40.7 0 0
   29 Locked QAM256 29 579.0 3.5 40.8 0 0
   30 Locked QAM256 30 585.0 3.6 40.7 0 0
   31 Locked QAM256 31 591.0 3.7 40.7 0 0
   32 Locked QAM256 32 597.0 4.0 40.8 0 0
   33 Locked OFDM PLC 159 678.0 6.5 41.7 181193252 0


   Upstream Bonded Channels  
  
   Channel Lock Status Channel Type Channel ID Symb. Rate (Ksym/sec) Freq. (MHz) Pwr (dBmV)
   1 Locked SC-QAM 2 5120 16.4 44.8
   2 Locked SC-QAM 3 5120 22.8 45.3
   3 Locked SC-QAM 4 5120 29.2 45.8
   4 Locked SC-QAM 5 5120 35.6 46.3
   5 Locked SC-QAM 6 2560 40.4 45.3

(edited)

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user_3c7aac

Visitor

 • 

3 Messages

2 years ago

I just put in an RMA for my MB8611.

Will followup if this resolves my issues.  (They say this may take up to one month.)

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user_3c7aac

Visitor

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3 Messages

2 years ago

UPDATE;

As of 5:38  PM:

System Up Time

1 days 05h:16m:35s

Nothing changed on my end but first time to go through a full day without a drop.

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CCElizabeth

Problem Solver

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908 Messages

Hello @user_3c7aac

 

Great news! Has your service been consistent since your last comment? 

I no longer work for Comcast.

2 years ago

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stop-the-monopoly

Visitor

 • 

3 Messages

2 years ago

Same issue here...so are at least 2 other neighbors next to me. 

Multiple service interruptions throughout the day (not always the same time between the three of us). 
Service tech came out, didn't find anything...said he would schedule a bucket truck. 
Truck came out - but the tech never talked to me....left after a few hours with no update. 
After hours trying to get an update from Xfinity, they told me the ticket was closed and had no notes in it. 

Had to restart the process all over again...still having issues...

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CCJamie

Problem Solver

 • 

322 Messages

@stop-the-monopoly Sorry to hear that you are having issues with your services, we can look into this further with you. If you could please direct message your name and complete service address, we can help with your issue. 

To send a "Direct Message" to Xfinity Support:

Click "Sign In" if necessary

Click the "Direct Messaging" icon or https://comca.st/3EqVMu7

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

I no longer work for Comcast.

2 years ago

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