6 Messages
Internet going down randomly, Uncorrectable codewords errors
Hi,
For the past few weeks we've been having issues with the internet going out. Only solution is to reboot the router and it will work again for a few hours to a day. I've tried chatting with support and they've been no help. They said a ticket was created but I've never heard a follow up. Can you please help?
user_xd3tv2
6 Messages
4 months ago
Here's the signal levels right after a reboot.
Downstream
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
21
22
23
24
25
26
27
28
29
30
31
32
193
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
543 MHz
429 MHz
435 MHz
441 MHz
447 MHz
453 MHz
459 MHz
465 MHz
471 MHz
477 MHz
483 MHz
489 MHz
495 MHz
501 MHz
507 MHz
513 MHz
519 MHz
525 MHz
531 MHz
537 MHz
549 MHz
555 MHz
561 MHz
567 MHz
573 MHz
579 MHz
585 MHz
591 MHz
597 MHz
603 MHz
609 MHz
615 MHz
9.57E+08
38.2 dB
42.8 dB
42.7 dB
42.7 dB
42.6 dB
42.4 dB
42.4 dB
42.2 dB
42.0 dB
42.0 dB
41.6 dB
41.4 dB
41.1 dB
40.7 dB
40.4 dB
40.1 dB
39.8 dB
39.6 dB
39.0 dB
38.8 dB
38.0 dB
37.8 dB
38.1 dB
37.7 dB
37.4 dB
37.6 dB
37.6 dB
37.2 dB
36.7 dB
36.9 dB
36.9 dB
36.9 dB
0.0 dB
-7.8 dBmV
1.0 dBmV
0.7 dBmV
0.3 dBmV
0.3 dBmV
0.1 dBmV
0.4 dBmV
0.6 dBmV
-1.0 dBmV
-1.5 dBmV
-2.0 dBmV
-2.6 dBmV
-3.2 dBmV
-4.1 dBmV
-4.6 dBmV
-5.0 dBmV
-5.4 dBmV
-6.0 dBmV
-6.7 dBmV
-7.0 dBmV
-8.0 dBmV
-8.2 dBmV
-7.7 dBmV
-7.9 dBmV
-8.2 dBmV
-8.1 dBmV
-8.2 dBmV
-8.6 dBmV
-9.1 dBmV
-8.8 dBmV
-8.9 dBmV
-8.9 dBmV
-29.3 dBmV
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
OFDM
*Channel ID 20 is the Primary channel
Upstream
1
2
3
4
41
Locked
Locked
Locked
Locked
Locked
16 MHz
22 MHz
29 MHz
35 MHz
36 MHz
5120
5120
5120
5120
0
43.8 dBmV
43.5 dBmV
43.0 dBmV
42.5 dBmV
36.7 dBmV
QAM
QAM
QAM
QAM
OFDMA
ATDMA
ATDMA
ATDMA
ATDMA
TDMA
CM Error Codewords
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
21
22
23
24
25
26
27
28
29
30
31
32
193
6203255
20562808
20568146
20573345
20578022
20582961
20587149
20592881
20597517
20601227
20606034
20610698
20615260
20620264
20624339
20628999
20633763
20638020
20643232
20647750
20652429
20657045
20661710
20666541
20670995
20675440
20680132
20684700
20689375
20694319
20691764
20693602
6203255
304629
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
304629
5898626
0
0
0
0
0
0
EG
Expert
•
107.1K Messages
4 months ago
The downstream power is too low and it may be intermittently fluctuating even lower to out-of-spec levels. It's far out of spec on the OFDM channel #193 !!! There is a condition known as cable tilt on the line. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the un-bonding of channels.
In an effort to try to obtain better connectivity / more wiggle room, check to see if there are any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage from Home Depot, Target, Wal-Mart, etc. Splitters should be swapped with known to be good / new ones to test.
Also check the coax cable for any damage such as cuts, nicks, abrasions, kinks, sharp bends, etc.
If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two-way splitter connected directly off of the drop from the street / pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.
Good luck with it !
2
0
user_xd3tv2
6 Messages
4 months ago
And now it is there again.
193
Locked
957000000.00
0.0 dB
-28.8 dBmV
OFDM
0
0