sbkim's profile

Regular Visitor

 • 

8 Messages

Thu, Sep 2, 2021 2:00 PM

Frequent outage - SB8200 issue?

Hello,

I've been experiencing intermittent internet outage for almost 6 months.  Some are caused by general outage but most appears to be happening just to my home.  This occurs once every 10 days or so and only between 7am - 9am in the morning which is frustrating as we work from home.   I call Xfinity and we go through our routine procedures as resetting the modem but I wanted to share a log from this morning's outage (9/2) and my event log and current status to see if anyone can see anything odd going on here:   Of course, after turning everything on and off (routers and switches), it's back up and running again but not each and every time.  Normally takes hour or more for the system to "stabilize" and I am back online.   Today, turning my network switch (Trendnet) on and off seemed to have helped.

Many thanks in advance!

Date Time Event ID Event Level Description
09/02/2021 07:43 82000500 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;"
09/02/2021 07:35 67061600 6 "DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;"
09/02/2021 07:35 68001102 3 "Config File Rejected due to Invalid or Unexpected TLV 11 encoding;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;"
09/02/2021 07:35 73040200 3 "TLV-11 - Illegal Set operation failed;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;"
01/01/1970 00:00 2436694066 6 "Honoring MDD; IP provisioning mode = IPv6"
01/01/1970 00:00 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;"
01/01/1970 00:00 84000100 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;"
09/02/2021 06:39 68001102 3 "Config File Rejected due to Invalid or Unexpected TLV 11 encoding;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;"
09/02/2021 06:39 73040200 3 "TLV-11 - Illegal Set operation failed;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;"
01/01/1970 00:00 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;"
01/01/1970 00:00 84000100 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;"
09/02/2021 06:40 2436694044 3 "Resetting the cable modem due to docsDevResetNow"
09/01/2021 07:38 82000500 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;"

08/23/2021 07:41

68001102

3

"Config File Rejected due to Invalid or Unexpected TLV 11 encoding;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

08/23/2021 07:41

73040200

3

"TLV-11 - Illegal Set operation failed;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

01/01/1970 00:00

82000200

3

"No Ranging Response received - T3 time-out;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

01/01/1970 00:00

84000100

3

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

08/23/2021 07:40

2436694044

3

"Resetting the cable modem due to docsDevResetNow"

08/23/2021 07:35

68001102

3

"Config File Rejected due to Invalid or Unexpected TLV 11 encoding;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

08/23/2021 07:35

73040200

3

"TLV-11 - Illegal Set operation failed;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

01/01/1970 00:00

82000200

3

"No Ranging Response received - T3 time-out;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

01/01/1970 00:00

84000100

3

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

08/23/2021 06:55

68001102

3

"Config File Rejected due to Invalid or Unexpected TLV 11 encoding;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

08/23/2021 06:55

73040200

3

"TLV-11 - Illegal Set operation failed;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

01/01/1970 00:00

82000200

3

"No Ranging Response received - T3 time-out;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

01/01/1970 00:00

84000100

3

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

08/23/2021 06:54

2436694044

3

"Resetting the cable modem due to docsDevResetNow"

08/23/2021 06:41

84000500

3

"SYNC Timing Synchronization failure - Loss of Sync;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

08/23/2021 06:41

68001102

3

"Config File Rejected due to Invalid or Unexpected TLV 11 encoding;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

08/23/2021 06:41

73040200

3

"TLV-11 - Illegal Set operation failed;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

01/01/1970 00:00

82000200

3

"No Ranging Response received - T3 time-out;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

01/01/1970 00:00

84000100

3

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

08/20/2021 00:02

82000500

3

"Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

08/20/2021 00:02

68001102

3

"Config File Rejected due to Invalid or Unexpected TLV 11 encoding;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

08/20/2021 00:02

73040200

3

"TLV-11 - Illegal Set operation failed;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

08/20/2021 00:02

82000200

3

"No Ranging Response received - T3 time-out;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

08/20/2021 00:02

84000100

3

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

08/20/2021 00:02

82000400

3

"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

08/20/2021 00:02

84000100

3

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

08/20/2021 00:02

82000400

3

"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

08/20/2021 00:02

84000100

3

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

08/20/2021 00:01

82000400

3

"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

08/20/2021 00:01

84000100

3

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

08/20/2021 00:01

82000400

3

"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

08/20/2021 00:01

84000100

3

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

08/20/2021 00:01

82000400

3

"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

08/20/2021 00:01

84000100

3

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

08/20/2021 00:00

84000100

3

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

08/20/2021 00:00

84000100

3

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

08/19/2021 23:48

82000200

3

"No Ranging Response received - T3 time-out;CM-(blank);CMTS-(blank);CM-QOS=1.1;CM-VER=3.1;"

 

Connection

The status listed show the connection state of the cable modem. They are used by your service provider to evaluate the operation of the cable modem.

Startup Procedure
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

Downstream Bonded Channels
Channel ID Lock Status Modulation Frequency Power SNR/MER Corrected Uncorrectables
5 Locked QAM256 549000000 Hz 3.4 dBmV 41.1 dB 0 0
2 Locked QAM256 531000000 Hz 3.9 dBmV 41.3 dB 0 0
3 Locked QAM256 537000000 Hz 4.0 dBmV 41.3 dB 0 0
4 Locked QAM256 543000000 Hz 3.2 dBmV 41.0 dB 0 0
6 Locked QAM256 555000000 Hz 2.8 dBmV 40.9 dB 0 0
7 Locked QAM256 561000000 Hz 3.4 dBmV 41.0 dB 0 0
8 Locked QAM256 567000000 Hz 2.9 dBmV 40.9 dB 0 0
9 Locked QAM256 573000000 Hz 3.2 dBmV 41.3 dB 0 0
10 Locked QAM256 579000000 Hz 2.6 dBmV 40.9 dB 0 0
11 Locked QAM256 585000000 Hz 3.1 dBmV 41.2 dB 0 0
12 Locked QAM256 591000000 Hz 2.7 dBmV 41.1 dB 0 0
13 Locked QAM256 597000000 Hz 3.1 dBmV 41.3 dB 0 0
14 Locked QAM256 603000000 Hz 2.8 dBmV 41.1 dB 0 0
15 Locked QAM256 609000000 Hz 2.6 dBmV 41.0 dB 0 0
16 Locked QAM256 615000000 Hz 2.4 dBmV 40.8 dB 0 0
17 Locked QAM256 621000000 Hz 2.2 dBmV 40.6 dB 0 0
18 Locked QAM256 627000000 Hz 2.3 dBmV 40.9 dB 0 0
19 Locked QAM256 633000000 Hz 2.1 dBmV 40.9 dB 0 0
20 Locked QAM256 639000000 Hz 2.4 dBmV 41.1 dB 0 0
21 Locked QAM256 645000000 Hz 2.1 dBmV 40.8 dB 0 0
22 Locked QAM256 651000000 Hz 2.1 dBmV 40.8 dB 0 0
23 Locked QAM256 657000000 Hz 2.2 dBmV 40.7 dB 0 0
24 Locked QAM256 663000000 Hz 2.4 dBmV 41.0 dB 0 0
25 Locked QAM256 669000000 Hz 2.3 dBmV 41.0 dB 0 0
26 Locked QAM256 675000000 Hz 2.5 dBmV 39.7 dB 0 0
27 Locked QAM256 681000000 Hz 2.4 dBmV 41.0 dB 0 0
28 Locked QAM256 687000000 Hz 2.3 dBmV 40.7 dB 0 0
29 Locked QAM256 711000000 Hz 2.3 dBmV 40.9 dB 0 0
30 Locked QAM256 693000000 Hz 2.6 dBmV 41.0 dB 0 0
31 Locked QAM256 699000000 Hz 2.1 dBmV 40.9 dB 0 0
32 Locked QAM256 705000000 Hz 2.7 dBmV 41.1 dB 0 0
37 Locked Other 762000000 Hz 2.9 dBmV 39.8 dB 135347865 0



Upstream Bonded Channels
Channel Channel ID Lock Status US Channel Type Frequency Width Power
1 1 Locked SC-QAM Upstream 35600000 Hz 6400000 Hz 38.0 dBmV
2 2 Locked SC-QAM Upstream 29200000 Hz 6400000 Hz 38.0 dBmV
3 3 Locked SC-QAM Upstream 22800000 Hz 6400000 Hz 37.0 dBmV
4 4 Locked SC-QAM Upstream 16400000 Hz 6400000 Hz 36.0 dBmV
5 9 Locked SC-QAM Upstream 40400000 Hz 3200000 Hz 37.0 dBmV



Current System Time: Thu Sep 2 07:59:15 2021

This post was escalated on September 20, 2021 by EG

Responses

EG

Expert

 • 

89.1K Messages

19 d ago

The signal stats are o/k but the error log entries indicate that something is going on. Perhaps there is noise ingress into the line(s) /  an upstream channel-return path impairment somewhere.


There are other signal stat figures that can't be read by the modem. They are the "Upstream Rx Power" (Upstream Receive Power Level), the "Upstream SNR Ch." (Upstream Signal To Noise Ratio), and the "Upstream ICFR" (In Channel Frequency Response). These are as equally important in diagnosing connectivity issues as are the modem's stats.

I'm going to escalate your issue to the Comcast corporate employees that are available to these boards. They will be able to poll the CMTS to see whether or not everything is in the green zone, see your node / cable plant and modem health, and also see a history plot for the modem. You should get a reply here in your topic. Good luck !

Regular Visitor

 • 

8 Messages

@EG thanks so much for the reply and I look forward to working with your team to better diagnose the issue.   Happy to provide whatever information is necessary to troubleshoot.  

EG

Expert

 • 

89.1K Messages

Ha ! I wish that they were "my team" ! I'd be RICH !!!

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

Visitor

 • 

2 Messages

7 d ago

So I see this same issue posted all over the forums and literally no answers. Somebody reads the logs and says yeah there is an issue and then literally not a single actual resolution anywhere. I'm not trying to come off as a jerk to the people volunteering their time but what gives? How is there no progress on this? I have a tech coming out to my house Thursday but I'm not very confident. 

EG

Expert

 • 

89.1K Messages

@grogotron

That's not true, sorry. I've been here a very long time and I've seen most concerns get taken care of. Sometimes things fall through the cracks in this world... And it appears that this one has.

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

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
EG

Expert

 • 

89.1K Messages

7 d ago

@sbkim I'm going to try re-escalating your issue for you. Hold tight.

Regular Visitor

 • 

8 Messages

@EG 

Thanks so much - I appreciate your help!    I just posted an update below.

(edited)

Regular Visitor

 • 

8 Messages

1 d ago

Quick update as this sounds like a pervasive issue.  A tech came out a couple weeks ago and replaced a couple fittings outside but found NO issues with my modem and wiring inside the house.   Starting today I am under new plan and just like other days around 735am in the morning, my internet goes down.   On the phone with Xfinity for one hour doing our typical troubleshooting (mostly rebooting the modem, router, switch multiple times).  Finally, we did a factory reset on SB8200.   Still no connection and then out of no where I have internet again.   Below is my latest status and event log in case anyone is curious but hopefully we can resolve this soon.  Alternatively, I was thinking about getting a new modem or router as Xfinity was quick to note that it's your equipment not us.

Connection

The status listed show the connection state of the cable modem. They are used by your service provider to evaluate the operation of the cable modem.

Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 693000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK
Security Enabled BPI+
DOCSIS Network Access Enabled Allowed

Downstream Bonded Channels
Channel ID Lock Status Modulation Frequency Power SNR/MER Corrected Uncorrectables
30 Locked QAM256 693000000 Hz 2.2 dBmV 41.0 dB 0 0
2 Locked QAM256 531000000 Hz 3.7 dBmV 41.3 dB 0 0
3 Locked QAM256 537000000 Hz 3.8 dBmV 41.3 dB 0 0
4 Locked QAM256 543000000 Hz 3.0 dBmV 41.0 dB 0 0
5 Locked QAM256 549000000 Hz 3.2 dBmV 41.2 dB 0 0
6 Locked QAM256 555000000 Hz 2.5 dBmV 40.8 dB 0 0
7 Locked QAM256 561000000 Hz 3.1 dBmV 41.1 dB 0 0
8 Locked QAM256 567000000 Hz 2.4 dBmV 40.8 dB 0 0
9 Locked QAM256 573000000 Hz 2.7 dBmV 41.0 dB 0 0
10 Locked QAM256 579000000 Hz 2.1 dBmV 40.7 dB 0 0
11 Locked QAM256 585000000 Hz 2.6 dBmV 41.0 dB 0 0
12 Locked QAM256 591000000 Hz 2.3 dBmV 40.8 dB 0 0
13 Locked QAM256 597000000 Hz 2.7 dBmV 40.9 dB 0 0
14 Locked QAM256 603000000 Hz 2.5 dBmV 40.8 dB 0 0
15 Locked QAM256 609000000 Hz 2.4 dBmV 40.7 dB 0 0
16 Locked QAM256 615000000 Hz 2.3 dBmV 40.7 dB 0 0
17 Locked QAM256 621000000 Hz 2.1 dBmV 40.8 dB 0 0
18 Locked QAM256 627000000 Hz 2.2 dBmV 40.9 dB 0 0
19 Locked QAM256 633000000 Hz 2.0 dBmV 40.9 dB 0 0
20 Locked QAM256 639000000 Hz 2.2 dBmV 40.8 dB 0 0
21 Locked QAM256 645000000 Hz 1.8 dBmV 40.7 dB 0 0
22 Locked QAM256 651000000 Hz 1.7 dBmV 40.5 dB 0 0
23 Locked QAM256 657000000 Hz 1.7 dBmV 40.6 dB 0 0
24 Locked QAM256 663000000 Hz 1.8 dBmV 40.7 dB 0 0
25 Locked QAM256 669000000 Hz 1.8 dBmV 40.7 dB 0 0
26 Locked QAM256 675000000 Hz 1.8 dBmV 40.2 dB 0 0
27 Locked QAM256 681000000 Hz 1.9 dBmV 40.8 dB 0 0
28 Locked QAM256 687000000 Hz 1.8 dBmV 40.6 dB 0 0
29 Locked QAM256 711000000 Hz 2.2 dBmV 41.0 dB 0 0
31 Locked QAM256 699000000 Hz 1.9 dBmV 40.9 dB 0 0
32 Locked QAM256 705000000 Hz 2.5 dBmV 41.2 dB 0 0
37 Locked Other 762000000 Hz 2.1 dBmV 39.8 dB 262497068 0



Upstream Bonded Channels
Channel Channel ID Lock Status US Channel Type Frequency Width Power
1 1 Locked SC-QAM Upstream 35600000 Hz 6400000 Hz 38.0 dBmV
2 2 Locked SC-QAM Upstream 29200000 Hz 6400000 Hz 38.0 dBmV
3 3 Locked SC-QAM Upstream 22800000 Hz 6400000 Hz 37.0 dBmV
4 4 Locked SC-QAM Upstream 16400000 Hz 6400000 Hz 36.0 dBmV
5 9 Locked SC-QAM Upstream 40400000 Hz 3200000 Hz 36.0 dBmV



Current System Time: Mon Sep 20 09:18:57 2021

Event Log

The table below contains the log of events that the SB8200 has detected. This log can be important to the service provider to help diagnose and correct problems, if any should occur.

Top of Form

Date Time

Event ID

Event Level

Description

09/20/2021 08:33

67061600

6

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

09/20/2021 08:33

68001102

3

"Config File Rejected due to Invalid or Unexpected TLV 11 encoding;CM-MAC=xx;CMTS-MAC=xx;CM-QOS=1.1;CM-VER=3.1;"

09/20/2021 08:33

73040200

3

"TLV-11 - Illegal Set operation failed;CM-MAC=xx;CMTS-MAC=xx;CM-QOS=1.1;CM-VER=3.1;"

01/01/1970 00:00

2436694066

6

"Honoring MDD; IP provisioning mode = IPv6"

01/01/1970 00:00

82000200

3

"No Ranging Response received - T3 time-out;CM-MAC=xx;CMTS-MAC=xx;CM-QOS=1.1;CM-VER=3.1;"

01/01/1970 00:00

84000100

3

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

09/20/2021 08:32

2436694044

3

"Resetting the cable modem due to docsDevResetNow"

09/20/2021 07:57

68001102

3

"Config File Rejected due to Invalid or Unexpected TLV 11 encoding;CM-MAC=xx;CMTS-MAC=xx;CM-QOS=1.1;CM-VER=3.1;"

09/20/2021 07:57

73040200

3

"TLV-11 - Illegal Set operation failed;CM-MAC=xx;CMTS-MAC=xx;CM-QOS=1.1;CM-VER=3.1;"

01/01/1970 00:02

82000200

3

"No Ranging Response received - T3 time-out;CM-MAC=xx;CMTS-MAC=xx;CM-QOS=1.1;CM-VER=3.1;"

01/01/1970 00:02

84000100

3

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

01/01/1970 00:02

84000100

3

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

Regular Visitor

 • 

8 Messages

20 h ago

According to Arris, myUpstream Bonded Channels power levels should be over 40 dbmv - is this correct?  Mine are all below 40.

  • In the Upstream Bonded Channels section, identify the number of Channels and Type to find verify Upstream Power levels are within the acceptable range for each upstream channel. 
     
    Upstream Transmit Power Level
    Channel US Channel Type Acceptable Upstream Power Level
    Single SC-QAM 45 to 61 dBmV
    Two SC-QAM 45 to 54 dBmV
    Three or more SC-QAM 45 to 51 dBmV
    User-added image
     
  • Refresh the page at least twice to identify variations in SNR, Downstream Power, and Upstream Power.   

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