jimandlaurie's profile

Visitor

 • 

2 Messages

Mon, Nov 29, 2021 8:42 PM

Intermittent dropouts and increase in Uncorrectables

Hi - we have been seen a lot of intermittent dropouts. It doesn't impact us on our laptops much, but we have a streaming music server and any time there is a dropout, we lose the connection.  I am seeing the three warnings/errors in the modem log a lot and a screenshot of the modem status shows lots of uncorrectables.

What do these conditions point to as far as errors?

Thank you,

Jim 

Time Not Established

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

Mon Nov 29 11:05:42 2021

Warning (5)

RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

Mon Nov 29 11:05:42 2021

Warning (5)

Dynamic Range Window violation

XfinityEthan

Official Employee

 • 

668 Messages

2 m ago

Hi, @jimandlarie. Thanks for the post and details! I checked out your signal and all looks good as of yesterday. There were quick spikes in the FEC values, but are good now. I don't see any other issues as anything major stopped on the 23rd. Can you tell me about your setup? Are there any coax splitters involved? Is the modem power plugged into a strip or outlet? If you have been fine the last few days, let me know. 

Visitor

 • 

2 Messages

@XfinityEthan

Thank you for the reply - yes, we seem to be good now.  This is a relatively new house/development (18 months). From the main cable coming in from outside, there is one splitter and it goes to the TV (cable box) and the other goes to the cable modem.  The modem goes into our Orbi router.  I currently have the modem on a power strip, but can move it to its own outlet if that is recommended.

Thanks again,

Jim  

Official Employee

 • 

780 Messages

Just to clarify, your services are working well as of today? If that is the case then I wouldn't recommend changing anything. :) I always tell my husband if it isn't broke don't fix it. However, if you are still experiencing service issues we are definitely here to help!

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

New to the Community?

Start Here