steph20906's profile

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6 Messages

Friday, October 14th, 2022 4:36 PM

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Multiple internet outages each and every day due to MDD MESSAGE TIMEOUT and T3 TIMEOUT

Two months ago I started having LOTS of little internet outages all day long.  None lasts for more than a few seconds, but it's just long enough to interrupt a screen sharing session or streaming activity or gaming.  Sometimes it will happen 5 times within an hour, and sometimes only once... but the longest I've seen it go without an outage is 3 hours.

Comcast tech came out and said my signal was bad and a Tech-4 would have to look at it (he was only a Tech-2)

Tech-4 came out and said there was no problem at all

Tech-Ops Supervisor Hector [Edited: "Personal Information"] (Tech Number: [Edited: "Personal Information"]) came out and said they couldn't catch the problem happening, and thus couldn't fix it... but said he'd ping my modem now and then for a day or two and then get back with me.

I haven't heard from Hector since, and he doesnt' respond to my emails

So I had an electrician come out and install an entire new coax from outdoor wall to wiring closet, and I bought a new cable-modem/router.  

To simplify my test, I have the brand new coax wired into the brand new modem and then directly into a laptop... so no splitters or wifi or anything else... just one single ethernet laptop... and the problem continues.

I write down the times when these little 'blips' occur, and my new cable-modem has an 'event log' that I can now look at... and lo-and-behold the only events in that log are at the very same/exact time that I write down.  Lots of MDD MESSAGE TIMEOUT and even T3-TIMEOUT.

I've placed yet another service call, but I fear whoever shows up will simply give me "I'm a level 2 technician and this is a level 4 problem" and leave.  Any help you could give would be much appreciated

Event Log

Top of Form

   Log

 


  

   

Time 

 

Priority 

 

Description 

   

05:31:34
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 3; Chan ID: N/A; DSID: �; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

07:13:38
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

07:13:50
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

07:14:04
Fri Oct 14 2022

 

Warning (5)

 

MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

07:14:04
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 20; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

07:14:06
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 1; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

07:14:12
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 4; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

07:14:19
Fri Oct 14 2022

 

Warning (5)

 

MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

07:14:21
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 21; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

07:14:28
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 1; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

07:14:42
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 4; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

08:11:42
Fri Oct 14 2022

 

Warning (5)

 

MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

08:11:44
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 1; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

08:11:59
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 23; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

08:12:04
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

08:12:05
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 4; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

08:12:21
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 22; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

08:12:28
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

09:05:16
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

09:05:21
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 1 2 3.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

09:05:22
Fri Oct 14 2022

 

Warning (5)

 

MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

09:05:23
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 20; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

09:05:29
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 1; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

09:05:32
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 4; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

09:05:38
Fri Oct 14 2022

 

Warning (5)

 

MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

09:05:41
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 21; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

09:05:48
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 1; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

09:05:58
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 4; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

09:16:47
Fri Oct 14 2022

 

Critical (3)

 

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

09:51:09
Fri Oct 14 2022

 

Warning (5)

 

MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

09:51:16
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 1; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

   

09:51:43
Fri Oct 14 2022

 

Notice (6)

 

CM-STATUS message sent. Event Type Code: 4; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

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Problem Solver

 • 

339 Messages

4 years ago

@steph20906 Thanks for posting on our forums today!

 

I know that there is nothing worse than ongoing internet troubles, especially now that so many depend on our connection for our daily activities. No worries, you are in good hands. We will have this resolved in no time. I see you have already sent us a direct message. We can continue there so that there is not mix up between out conversations. Once we resolve your issues we can come back here and post the resolution so that it may help someone else experiencing the same issues. 

Expert

 • 

118.3K Messages

4 years ago

@steph20906 

For curiosity's sake, what do the modem's signal stats look like ? Try getting them here; http://192.168.100.1 

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 ?

New Poster

 • 

6 Messages

@EG​  - My new modem/router is a Motorola MG8702

 Downstream Bonded Channels  
  
   Channel Lock Status Modulation Channel ID Freq. (MHz) Pwr (dBmV) SNR (dB) Corrected Uncorrected
   1 Locked QAM256 41 669.0 -3.7 38.0 0 0
   2 Locked QAM256 13 501.0 -2.5 38.3 0 0
   3 Locked QAM256 14 507.0 -2.7 38.1 0 0
   4 Locked QAM256 15 513.0 -2.6 38.2 0 0
   5 Locked QAM256 16 519.0 -2.7 38.2 0 0
   6 Locked QAM256 17 525.0 -2.7 38.2 0 0
   7 Locked QAM256 18 531.0 -2.7 38.2 0 0
   8 Locked QAM256 19 537.0 -2.5 38.4 0 0
   9 Locked QAM256 20 543.0 -2.2 38.3 0 0
   10 Locked QAM256 21 549.0 -2.1 38.3 0 0
   11 Locked QAM256 22 555.0 -2.0 38.4 0 0
   12 Locked QAM256 23 561.0 -2.2 38.3 0 0
   13 Locked QAM256 24 567.0 -2.5 38.4 0 0
   14 Locked QAM256 25 573.0 -2.9 38.3 0 0
   15 Locked QAM256 26 579.0 -3.1 38.2 0 0
   16 Locked QAM256 27 585.0 -3.3 38.2 0 0
   17 Locked QAM256 28 591.0 -3.6 38.2 0 0
   18 Locked QAM256 29 597.0 -3.8 38.1 0 0
   19 Locked QAM256 30 603.0 -4.2 38.0 0 0
   20 Locked QAM256 31 609.0 -4.5 38.0 0 0
   21 Locked QAM256 32 615.0 -4.5 37.7 0 0
   22 Locked QAM256 33 621.0 -4.8 37.8 0 0
   23 Locked QAM256 34 627.0 -4.9 37.8 0 0
   24 Locked QAM256 35 633.0 -5.1 37.8 0 0
   25 Locked QAM256 36 639.0 -5.4 37.6 0 0
   26 Locked QAM256 37 645.0 -5.3 37.5 0 0
   27 Locked QAM256 38 651.0 -5.1 37.9 0 0
   28 Locked QAM256 39 657.0 -4.7 37.8 0 0
   29 Locked QAM256 40 663.0 -4.2 37.9 0 0
   30 Locked QAM256 42 675.0 -3.1 37.8 0 0
   31 Locked QAM256 43 681.0 -3.1 38.1 0 0
   32 Locked QAM256 44 687.0 -4.0 37.8 0 0
   33 Locked OFDM PLC 159 722.0 -4.2 0.0 797797792 39229343


   Upstream Bonded Channels  
  
   Channel Lock Status Channel Type Channel ID Symb. Rate (Ksym/sec) Freq. (MHz) Pwr (dBmV)
   1 Locked SC-QAM 1 2560 10.4 45.8
   2 Locked SC-QAM 2 5120 16.4 45.3
   3 Locked SC-QAM 3 5120 22.8 45.8
   4 Locked SC-QAM 4 5120 29.2 45.8
   5 Locked SC-QAM 5 5120 35.6 45.8
   6 Locked SC-QAM 6 2560 40.4 46.8

Contributor

 • 

20 Messages

@XfinityRaul   Thanks for chatting with me today. I have high hopes that your Network reset will do the trick. I'll be monitoring things here and let you know.

Expert

 • 

118.3K Messages

4 years ago

@steph20906 

The downstream power was bit on the low side at that snapshot in time, and it may be intermittently fluctuating even lower to out of spec levels. 

Suggest that you continue working with the Comcast official employees via direct messages. Good luck with it ! Please post back here with how things turn out.

(edited)

New Poster

 • 

6 Messages

@EG​   XfinityRaul DM'd me earlier to say:

Thank you for sharing. I checked your signal and noticed the intermittent internet signal issues you're referring to. I'd like to start sending signals to your modem but this will cause a temporary service interruption. Is now a good time to begin? 
I sent your modem a signal in hopes this will resolve this internet service issue you're having. Let's give it about 10 minutes for your system to refresh. Please let me know if you notice the problem persist after this time.
We have an internal system that allows us to communicate with our customers devices by sending different kinds of signals. This one in particular was to help refresh your network. If this doesn't work, I can send a another signal that'll help restart the device.
We can then use the same system to open a work order to have one of our technicians visit your home and help us resolve this signal issue you've been experiencing.

Since then I haven't had any interruption in service, and I'll be watching it closely throughout the weekend.  Fingers crossed.

Problem Solver

 • 

606 Messages

I'm glad to hear that you're not having any issues since. I will check in with you on monday, to verify the isseas doesn't resurface. My team is here around the clock if you need anything before then. 

I no longer work for Comcast.

Contributor

 • 

20 Messages

@XfinityDanielC  the problem continues... an hour after the technician left, I lost signal yet again, and continue to do so over and over and...

15:54:33
Fri Oct 14 2022
  Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=x:dc;CMTS-MAC=x;CM-QOS=1.1;CM-VER=3.1;
    15:54:50
Fri Oct 14 2022
  Notice (6)   Honoring MDD; IP provisioning mode = IPv6
    15:55:06
Fri Oct 14 2022
  Warning (5)   REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=x;CMTS-MAC=x;CM-QOS=1.1;CM-VER=3.1;

(edited)

Expert

 • 

118.3K Messages

4 years ago

@wdavis20906 

Please create a new topic of your own here on this board detailing your issue. Thanks.

Contributor

 • 

20 Messages

@EG​ same problem, same household, Xfinity simply wouldn't talk to me unless I got authorized as a Manager on our account (my wife originally opened it)

Expert

 • 

118.3K Messages

@wdavis20906 

Ok I got it. No worries !

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.

Was your question answered? Please mark an Accepted Answer!tick

Expert

 • 

118.3K Messages

4 years ago

@steph20906 

FWIW, RF signal problems / line impairments can't be fixed remotely. It takes a boots-on-the-ground physical intervention. See what happens. Best of luck !

(edited)

Contributor

 • 

20 Messages

@EG​ apparently you're correct sir as it failed again

Contributor

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20 Messages

4 years ago

17:23:52
Fri Oct 14 2022
  Warning (5)   MDD message timeout;CM-MAC=dc;CMTS-MAC=x;CM-QOS=1.1;CM-VER=3.1;
    17:23:55
Fri Oct 14 2022
  Notice (6)   CM-STATUS message sent. Event Type Code: 1; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=x;CMTS-MAC=x;CM-QOS=1.1;CM-VER=3.1;
    17:24:07
Fri Oct 14 2022
  Warning (5)   DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=x;CMTS-MAC=x;CM-QOS=1.1;CM-VER=3.1;
    17:24:16
Fri Oct 14 2022
  Warning (5)   MDD message timeout;CM-MAC=x:dc;CMTS-MAC=x;CM-QOS=1.1;CM-VER=3.1;

(edited)

Contributor

 • 

20 Messages

4 years ago

   18:03:06
Fri Oct 14 2022
  Notice (6)   DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=0x;CMTS-MAC=0x;CM-QOS=1.1;CM-VER=3.1;
    18:03:41
Fri Oct 14 2022
  Warning (5)   RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=x;CMTS-MAC=x;CM-QOS=1.1;CM-VER=3.1;
    18:03:41
Fri Oct 14 2022
  Warning (5)   Dynamic Range Window violation

(edited)

Contributor

 • 

20 Messages

4 years ago

Brand new coax from outside wall to wiring closet, brand new Motorola MG8702 modem/router, brand new cat-8 ethernet cables and still get this connection dropout twenty times a day.  Xfinity sent technician out 3 times but they can't find anything when they hook up their phone to either the pedestal in the backyard or the outside wall where the coax enters the house.  

To rule out all the detractors, I simplified my network to a simple laptop connected directly to modem via ethernet cable... so no splitters or wifi or anything else... problem persists.

   08:54:21
Sat Oct 15 2022
  Warning (5)   Dynamic Range Window violation
    08:54:21
Sat Oct 15 2022
  Warning (5)   MDD message timeout;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.1;

 



   Downstream Bonded Channels  
  
   Channel Lock Status Modulation Channel ID Freq. (MHz) Pwr (dBmV) SNR (dB) Corrected Uncorrected
   1 Locked QAM256 25 573.0 -2.4 37.9 0 0
   2 Locked QAM256 1 411.0 -1.0 38.4 0 0
   3 Locked QAM256 2 417.0 -1.0 38.3 0 0
   4 Locked QAM256 3 435.0 -0.8 38.3 0 0
   5 Locked QAM256 4 441.0 -0.8 38.3 0 0
   6 Locked QAM256 5 453.0 -0.8 38.3 0 0
   7 Locked QAM256 6 459.0 -0.8 38.3 0 0
   8 Locked QAM256 7 465.0 -1.0 38.1 0 0
   9 Locked QAM256 8 471.0 -1.1 38.1 0 0
   10 Locked QAM256 9 477.0 -1.3 38.1 0 0
   11 Locked QAM256 10 483.0 -1.4 38.1 0 0
   12 Locked QAM256 11 489.0 -1.6 38.0 0 0
   13 Locked QAM256 12 495.0 -1.8 37.9 0 0
   14 Locked QAM256 13 501.0 -2.0 37.8 0 0
   15 Locked QAM256 14 507.0 -2.2 37.7 0 0
   16 Locked QAM256 15 513.0 -2.1 37.9 0 0
   17 Locked QAM256 16 519.0 -2.2 37.9 0 0
   18 Locked QAM256 17 525.0 -2.2 37.9 0 0
   19 Locked QAM256 18 531.0 -2.2 37.8 0 0
   20 Locked QAM256 19 537.0 -2.0 37.9 0 0
   21 Locked QAM256 20 543.0 -1.8 38.0 0 0
   22 Locked QAM256 21 549.0 -1.7 38.0 0 0
   23 Locked QAM256 22 555.0 -1.6 38.0 0 0
   24 Locked QAM256 23 561.0 -1.7 38.0 0 0
   25 Locked QAM256 24 567.0 -2.1 38.1 0 0
   26 Locked QAM256 26 579.0 -2.7 37.9 0 0
   27 Locked QAM256 27 585.0 -2.8 37.9 0 0
   28 Locked QAM256 28 591.0 -2.9 37.9 0 0
   29 Locked QAM256 29 597.0 -3.0 38.0 0 0
   30 Locked QAM256 30 603.0 -3.3 37.9 0 0
   31 Locked QAM256 31 609.0 -3.5 37.8 0 0
   32 Locked QAM256 32 615.0 -3.4 37.5 0 0
   33 Locked OFDM PLC 159 722.0 -3.4 37.5 0 0


   Upstream Bonded Channels  
  
   Channel Lock Status Channel Type Channel ID Symb. Rate (Ksym/sec) Freq. (MHz) Pwr (dBmV)
   1 Not Locked Unknown 0 0 0.0 0.0

 

Note: This comment was created from a merged conversation originally titled Losing connectivity several times a day - MDD message timeout

Contributor

 • 

20 Messages

@DG Always look forward to your commentary

Expert

 • 

118.3K Messages

4 years ago

@wdavis20906 

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".

Contributor

 • 

20 Messages

@EG​ I think I've done that now 

Expert

 • 

118.3K Messages

4 years ago

@wdavis20906 Yes. I have made them public again. So I have re-escalated your issue again to the Comcast corporate employees as being unresolved. Good luck again !

(edited)

Contributor

 • 

20 Messages

4 years ago

Service is up and down constantly this morning

   09:45:47
Sat Oct 15 2022
  Warning (5)   Dynamic Range Window violation
    09:46:01
Sat Oct 15 2022
  Warning (5)   MDD message timeout;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.1;
    09:47:49
Sat Oct 15 2022
  Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.1;

Official Employee

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2.4K Messages

HI there @wdavis20906!  Thanks so much for taking the time to reach out to Xfinity Support here on our Community Forum.  We are so happy to hear from you and glad to help in any way that we can.  No worries!  You have reached out to the right team ,and we are going to do everything that we can to get things squared away.  So that we can get started, please feel free to shoot us a private message with your name and service address.  That way we can take a look at what's 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

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

Contributor

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20 Messages

OK @XfinityArmand , done

Contributor

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20 Messages

More outages:

    17:48:47
Sun Oct 16 2022
  Warning (5)   DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.1;
    17:48:58
Sun Oct 16 2022
  Warning (5)   MDD message timeout;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.1;

Problem Solver

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954 Messages

Thank you. Let's get the tech visit set up, so we can get this resolved. We may charge for this visit if we determine the problem is not caused by Comcast equipment or service. We do not charge for service visits scheduled within 30 days of a previously technician completed service visit, installation, or change of service. An adult over the age of 18 must be present during the entire appointment. We’ll need access to all cable outlets in the home and the technician will not move furniture. Pets must be secured during the technician visit, for their own safety and the technician’s. May I please have your best contact phone number? This is specific for our techs and tech teams, in case we need to get a hold of you. 

 

I no longer work for Comcast.

Contributor

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20 Messages

4 years ago

@EG  I wonder if you could provide some advice here...  Comcast wants to send out a 4th technician to look at my intermittent outage issue.  On the previous 3 visits, each technician looked at everything, said they could see no problem, and left.  Within a few hours the problem re-occurred.  So even with my cable-modem event log showing MDD TIMEOUTS and all sorts of other problems, they don't look at or ask for any of that... 

How would my issue possibly EVER get past the 'well it looked fine when I was there' stage of Comcast on-site support?

 

wd in houston

Expert

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118.3K Messages

4 years ago

After a certain number of tech visits (I'm not certain but it may actually be 4), a red flag is supposed to get raised and an unresolved problem is supposed to automatically get escalated to supervision and possibly to their network maintenance dept.

If the premises facing techs can not find or fix a problem at your home, it is they who are responsible for escalating it to their line / network / maintenance dept. techs. The problem may lie beyond your home in the local neighborhood infrastructure somewhere but it is their S.O.P. to always start at the home. And if the problem is found to be on their side of the demarcation point, there will not be any charge.

Try insisting on escalation ! Good luck !

(edited)

Contributor

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20 Messages

4 years ago

For my 4th service call about this issue, 3 Comcast vans pulled up and stayed for over 2 hours.  They replaced connectors on the end of some coax cables (most of which were for tv's), mentioned seeing a 'hot modem' on the network that they were going to replace, and I have no idea what else they may have seen or done.  

When they left, one gave me his phone number and told me to text him if the problem returned.

16 hours later when the outages continued, I texted him and got "thanks, I'll alert my network supervisor" and the problem continued.

24 hours later and the problem is still happening, and I get no response from the text msgs anymore... but I know the tech mentioned he doesn't work M-F

This is SO frustrating and has been going on for months and each time I have to start completely over with explaining things...

    09:47:45
Fri Oct 21 2022
  Warning (5)   DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.1;
    09:47:55
Fri Oct 21 2022
  Warning (5)   MDD message timeout;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.1;

Expert

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118.3K Messages

4 years ago

@wd20906 

Sorry to hear that the problem is still unresolved.... Not much more can be done here on the forums. It's in the hands of the *boots on the ground* guys now. I wish you the best for a speedy resolution !

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