So..... if the loaner 16-channel downstream modem shows no uncorrectables at all after 2 days, and I hook my own 8-channel modem up, if mine starts showing high uncorrectables and dropped channels again, does that mean my modem is bad?
Maybe... maybe not...
Newer modems have better DSP technology.
I doubt the old modem is actually bad
it's design just doesn't work well on TWC's mess...
Spectrum is supposed to be providing free modems.. wait.
That's the same line of thought I've been having re: the DSP tech on the modems. I wonder how long it will be till they drop the modem rental fee. I'd just use theirs once the fee is dropped.
Finally the loaner modem did *something*..... though one T3 Timeout isn't much to complain about. Perhaps it was loss of upstream path....
Time Priority Description
Fri Jul 15 16:18:27 2016 | Critical (3) | Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=78:96:84:e9:11:a5;CMTS-MAC=00:17:10:8a:37:0e;CM-QOS=1.1;CM-VER=3.0; |
Startup Procedure
Procedure | Status | Comment |
Acquire Downstream Channel | Locked | |
Connectivity State | OK | Operational |
Boot State | OK | Operational |
Configuration File | OK | |
Security | Enabled | BPI+ |
DOCSIS Network Access Enabled | Allowed |
Channel | Lock Status | Modulation | Channel ID | Frequency | Power | SNR | Corrected | Uncorrectables |
1 | Locked | QAM256 | 4 | 573000000 Hz | -0.9 dBmV | 40.0 dB | 3 | 0 |
2 | Locked | QAM256 | 2 | 561000000 Hz | -1.1 dBmV | 40.0 dB | 0 | 0 |
3 | Locked | QAM256 | 3 | 567000000 Hz | -0.9 dBmV | 40.1 dB | 2 | 0 |
4 | Locked | QAM256 | 1 | 555000000 Hz | -1.3 dBmV | 40.0 dB | 5 | 0 |
5 | Locked | QAM256 | 5 | 579000000 Hz | -1.0 dBmV | 39.9 dB | 7 | 0 |
6 | Locked | QAM256 | 6 | 585000000 Hz | -0.6 dBmV | 40.0 dB | 6 | 0 |
7 | Locked | QAM256 | 7 | 591000000 Hz | -0.3 dBmV | 40.2 dB | 6 | 0 |
8 | Locked | QAM256 | 8 | 597000000 Hz | 0.2 dBmV | 40.4 dB | 6 | 0 |
9 | Locked | QAM256 | 9 | 603000000 Hz | 0.2 dBmV | 40.4 dB | 5 | 0 |
10 | Locked | QAM256 | 10 | 609000000 Hz | -0.1 dBmV | 40.2 dB | 10 | 0 |
11 | Locked | QAM256 | 11 | 615000000 Hz | -0.4 dBmV | 40.1 dB | 6 | 0 |
12 | Locked | QAM256 | 12 | 621000000 Hz | -0.5 dBmV | 40.0 dB | 5 | 0 |
13 | Locked | QAM256 | 13 | 627000000 Hz | -0.4 dBmV | 40.0 dB | 3 | 0 |
14 | Locked | QAM256 | 14 | 633000000 Hz | -0.2 dBmV | 40.1 dB | 4 | 0 |
15 | Locked | QAM256 | 15 | 639000000 Hz | -0.2 dBmV | 40.1 dB | 1 | 0 |
16 | Locked | QAM256 | 16 | 645000000 Hz | -0.3 dBmV | 40.0 dB | 2 | 0 |
Channel | Lock Status | US Channel Type | Channel ID | Symbol Rate | Frequency | Power |
1 | Locked | ATDMA | 3 | 5120 Ksym/sec | 30600000 Hz | 42.8 dBmV |
2 | Locked | ATDMA | 2 | 5120 Ksym/sec | 24200000 Hz | 42.8 dBmV |
3 | Locked | TDMA | 1 | 2560 Ksym/sec | 19400000 Hz | 41.8 dBmV |
4 | Locked | ATDMA | 4 | 2560 Ksym/sec | 37000000 Hz | 44.0 dBmV |
Update: I'm back using my modem, SB6141, but with the power supply from the loaner, the tech's SB6183, to see if the power supply from mine is bad. The tech hasn't seen any issue with signals this week in my area and he does not know if any further work was done by the maintenance crews at my neighbors' homes. I set up my modem direct to my computer, and then through my router, and the speedtest results were the same ... 59 Mbps down /6 up, as it should be. Now we wait and see what my modem does and if I have any related connectivity issues again.
Note: with the tech's full-speed-provisioned modem, when connected directly to my PC's Gigabit Ethernet, it gets 248 Mbps down /23 up. When I was getting 89 down with his modem, it was going through my non-Gigabit router and was limited by it.
Here's a link to a screenshot of my modem signals right after connecting it:
https://techshots.shutterfly.com/pictures/25
Here's my signal page after rebooting the modem and connecting via my router....
Channel ID | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
Frequency | 555000000 Hz | 561000000 Hz | 567000000 Hz | 573000000 Hz | 579000000 Hz | 585000000 Hz | 591000000 Hz | 597000000 Hz | |
Signal to Noise Ratio | 37 dB | 37 dB | 38 dB | 38 dB | 37 dB | 38 dB | 38 dB | 38 dB | |
Downstream Modulation | QAM256 | QAM256 | QAM256 | QAM256 | QAM256 | QAM256 | QAM256 | QAM256 | |
Power Level
| -1 dBmV | 0 dBmV | 0 dBmV | 0 dBmV | 0 dBmV | 0 dBmV | 0 dBmV | 0 dBmV |
Channel ID | 4 | 2 | 3 | 1 |
Frequency | 37000000 Hz | 24200000 Hz | 30600000 Hz | 19400000 Hz |
Ranging Service ID | 5972 | 5972 | 5972 | 5972 |
Symbol Rate | 2.560 Msym/sec | 5.120 Msym/sec | 5.120 Msym/sec | 2.560 Msym/sec |
Power Level | 44 dBmV | 43 dBmV | 43 dBmV | 43 dBmV |
Upstream Modulation | [3] QPSK [3] 16QAM | [3] QPSK [1] 16QAM [2] 64QAM | [3] QPSK [1] 16QAM [2] 64QAM | [3] QPSK [2] 16QAM |
Ranging Status | Success | Success | Success | Success |
Channel ID | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
Total Unerrored Codewords | 136188633 | 135226180 | 135243775 | 135234273 | 135217039 | 135217330 | 135216920 | 135218524 |
Total Correctable Codewords | 1 | 1 | 7 | 7 | 19 | 46 | 11 | 15 |
Total Uncorrectable Codewords | 584 | 1296 | 479 | 1383 | 651 | 1399 | 595 | 1577 |
...and in the time it took me to post that last comment, my 6141 dropped channel 6 and replaced it with channel 14. Nothing new in the logs since the initial connect, so far.
Channel ID | 1 | 2 | 3 | 4 | 5 | 7 | 8 | 14 | |
Frequency | 555000000 Hz | 561000000 Hz | 567000000 Hz | 573000000 Hz | 579000000 Hz | 591000000 Hz | 597000000 Hz | 633000000 Hz | |
Signal to Noise Ratio | 37 dB | 37 dB | 38 dB | 38 dB | 37 dB | 38 dB | 38 dB | 38 dB | |
Downstream Modulation | QAM256 | QAM256 | QAM256 | QAM256 | QAM256 | QAM256 | QAM256 | QAM256 | |
Power Level
| -1 dBmV | -1 dBmV | -1 dBmV | 0 dBmV | 0 dBmV | 0 dBmV | 0 dBmV | 0 dBmV |
Channel ID | 4 | 2 | 3 | 1 |
Frequency | 37000000 Hz | 24200000 Hz | 30600000 Hz | 19400000 Hz |
Ranging Service ID | 5972 | 5972 | 5972 | 5972 |
Symbol Rate | 2.560 Msym/sec | 5.120 Msym/sec | 5.120 Msym/sec | 2.560 Msym/sec |
Power Level | 44 dBmV | 43 dBmV | 43 dBmV | 43 dBmV |
Upstream Modulation | [3] QPSK [3] 16QAM | [3] QPSK [1] 16QAM [2] 64QAM | [3] QPSK [1] 16QAM [2] 64QAM | [3] QPSK [2] 16QAM |
Ranging Status | Success | Success | Success | Success |
Channel ID | 1 | 2 | 3 | 4 | 5 | 7 | 8 | 14 |
Total Unerrored Codewords | 147818767 | 146856314 | 146873910 | 146864408 | 146847173 | 137248079 | 137248842 | 137251538 |
Total Correctable Codewords | 1 | 1 | 7 | 7 | 19 | 63 | 51 | 28 |
Total Uncorrectable Codewords | 584 | 1296 | 479 | 1383 | 651 | 3037 | 2085 | 2981 |
You have ingress issues still... 585 mHz (ch6) it local tv ch 33 getting in somewhere, could be anywhere from the modem, to the cable head end miles away
But the tech doesn't see any problem, he says the SB6141 gives them a lot of problems. The problem is it doesn't handle the ingress issues from TWC lines being under-maintained in some neighborhoods. I don't see how I can get them to do anything to fix this.
Why no ingress issues with the tech's loaner modem though??
Now two hours later, another channel has dropped and been replaced. Still nothing new in the modem log. I haven't been online so I haven't seen symptoms.
I don't see why I have to buy a $100 modem when there isn't anything wrong with mine, and my 50/5 speed is more than covered by my 6141. The tech apparently wants me to rent my modem from TWC so he can replace it with the 6183. I don't want to rent one. He has no idea if and when Spectrum will drop the modem rental charge in this area.
Channel ID | 1 | 2 | 3 | 4 | 5 | 8 | 11 | 14 | |
Frequency | 555000000 Hz | 561000000 Hz | 567000000 Hz | 573000000 Hz | 579000000 Hz | 597000000 Hz | 615000000 Hz | 633000000 Hz | |
Signal to Noise Ratio | 38 dB | 38 dB | 38 dB | 38 dB | 37 dB | 38 dB | 38 dB | 37 dB | |
Downstream Modulation | QAM256 | QAM256 | QAM256 | QAM256 | QAM256 | QAM256 | QAM256 | QAM256 | |
Power Level
| -1 dBmV | -1 dBmV | -1 dBmV | 0 dBmV | 0 dBmV | 0 dBmV | 0 dBmV | 0 dBmV |
Channel ID | 4 | 2 | 3 | 1 |
Frequency | 37000000 Hz | 24200000 Hz | 30600000 Hz | 19400000 Hz |
Ranging Service ID | 5972 | 5972 | 5972 | 5972 |
Symbol Rate | 2.560 Msym/sec | 5.120 Msym/sec | 5.120 Msym/sec | 2.560 Msym/sec |
Power Level | 44 dBmV | 43 dBmV | 44 dBmV | 43 dBmV |
Upstream Modulation | [3] QPSK [3] 16QAM | [3] QPSK [1] 16QAM [2] 64QAM | [3] QPSK [1] 16QAM [2] 64QAM | [3] QPSK [2] 16QAM |
Ranging Status | Success | Success | Success | Success |
Channel ID | 1 | 2 | 3 | 4 | 5 | 8 | 11 | 14 |
Total Unerrored Codewords | 551412478 | 550450024 | 550467620 | 550458118 | 550440885 | 225081080 | 225079070 | 540845135 |
Total Correctable Codewords | 2 | 3 | 9 | 8 | 19 | 78 | 98 | 28 |
Total Uncorrectable Codewords | 584 | 1296 | 479 | 1383 | 651 | 4554 | 2661 | 2981 |
I suspect downstream channel 8 will drop next.
Service slowdown for a minute, and sure enough, lost a downstream channel altogether, now only have 7 down instead of 8.
TimePriorityCodeMessage
Jul 17 2016 18:56:33 | 5-Warning | T202.0 | Lost MDD Timeout;CM-MAC=30:60:23:cc:fe:fc;CMTS-MAC=00:17:10:8a:37:0e;CM-QOS=1.1;CM-VER=3.0; |
Jul 17 2016 18:56:33 | 5-Warning | N/A | DS Partial Service Fallback: MDD Lost-> CM in DOCSIS 3.0 Recovery Mode ;CM-MAC=30:60:23:cc:fe:fc;CMTS-MAC=00:17:10:8a:37:0e;CM-QOS=1.1;CM-VER=3.0; |
Channel ID | 1 | 2 | 3 | 5 | 8 | 11 | 12 | |
Frequency | 555000000 Hz | 561000000 Hz | 567000000 Hz | 579000000 Hz | 597000000 Hz | 615000000 Hz | 621000000 Hz | |
Signal to Noise Ratio | 38 dB | 38 dB | 38 dB | 38 dB | 38 dB | 38 dB | 38 dB | |
Downstream Modulation | QAM256 | QAM256 | QAM256 | QAM256 | QAM256 | QAM256 | QAM256 | |
Power Level
| 0 dBmV | 0 dBmV | 0 dBmV | 0 dBmV | 2 dBmV | 1 dBmV | 0 dBmV |
Channel ID | 4 | 2 | 3 | 1 |
Frequency | 37000000 Hz | 24200000 Hz | 30600000 Hz | 19400000 Hz |
Ranging Service ID | 5972 | 5972 | 5972 | 5972 |
Symbol Rate | 2.560 Msym/sec | 5.120 Msym/sec | 5.120 Msym/sec | 2.560 Msym/sec |
Power Level | 44 dBmV | 43 dBmV | 43 dBmV | 41 dBmV |
Upstream Modulation | [3] QPSK [3] 16QAM | [3] QPSK [1] 16QAM [2] 64QAM | [3] QPSK [1] 16QAM [2] 64QAM | [3] QPSK [2] 16QAM |
Ranging Status | Success | Success | Success | Success |
Channel ID | 1 | 2 | 3 | 5 | 8 | 11 | 12 |
Total Unerrored Codewords | 1351106177 | 1350143723 | 1350161317 | 1326078672 | 1326051997 | 1000687829 | 1000682294 |
Total Correctable Codewords | 2 | 3 | 11 | 23 | 35 | 95 | 113 |
Total Uncorrectable Codewords | 584 | 1296 | 479 | 3084 | 1346 | 6032 | 4058 |