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Help! I am at the mercy of my Modem Nighthawk C7000-100NAS
Constant disconnection issues everyday. Cannot get any work done. I've rebooted numerous time, bought new coax cable, change my service to static ISP, change the MTU to lower numer than 1500, called ...
t3/t4 errors tend to be signal issues. do you have a screen snip of tthe cable connections page? it shows the values
| Frequency start Value | |
| This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect. | |
|
Startup Procedure
| Procedure | Status | Comment |
| Acquire Downstream Channel | 483000000 Hz | Locked |
| Connectivity State | OK | Operational |
| Boot State | OK | Operational |
| Security | Enabled | BPI+ |
| IP Provisioning Mode | Honor MDD | honorMdd(4) |
Downstream Bonded Channels
| Channel | Lock Status | Modulation | Channel ID | Frequency | Power | SNR | Correctables | Uncorrectables |
| 1 | Locked | QAM256 | 5 | 483000000 Hz | -1.4 dBmV | 42.6 dB | 0 | 0 |
| 2 | Locked | QAM256 | 13 | 543000000 Hz | -1.8 dBmV | 41.9 dB | 0 | 0 |
| 3 | Locked | QAM256 | 14 | 549000000 Hz | -1.3 dBmV | 42.2 dB | 0 | 0 |
| 4 | Locked | QAM256 | 15 | 555000000 Hz | -1.1 dBmV | 42.3 dB | 0 | 0 |
| 5 | Locked | QAM256 | 16 | 561000000 Hz | -1.9 dBmV | 41.8 dB | 0 | 0 |
| 6 | Locked | QAM256 | 18 | 573000000 Hz | -2.4 dBmV | 41.6 dB | 0 | 0 |
| 7 | Locked | QAM256 | 19 | 579000000 Hz | -2.9 dBmV | 41 dB | 0 | 0 |
| 8 | Locked | QAM256 | 20 | 585000000 Hz | -2.6 dBmV | 41 dB | 0 | 0 |
| 9 | Locked | QAM256 | 21 | 591000000 Hz | -2.9 dBmV | 40.6 dB | 0 | 0 |
| 10 | Locked | QAM256 | 22 | 597000000 Hz | -2.3 dBmV | 41 dB | 0 | 0 |
| 11 | Locked | QAM256 | 23 | 603000000 Hz | -2 dBmV | 41.3 dB | 0 | 0 |
| 12 | Locked | QAM256 | 24 | 609000000 Hz | -2.2 dBmV | 41.2 dB | 0 | 0 |
| 13 | Locked | QAM256 | 1 | 459000000 Hz | -1.2 dBmV | 42.6 dB | 0 | 0 |
| 14 | Locked | QAM256 | 2 | 465000000 Hz | -1.4 dBmV | 42.5 dB | 0 | 0 |
| 15 | Locked | QAM256 | 3 | 471000000 Hz | -1.3 dBmV | 42.7 dB | 0 | 0 |
| 16 | Locked | QAM256 | 4 | 477000000 Hz | -1 dBmV | 42.9 dB | 0 | 0 |
| 17 | Locked | QAM256 | 6 | 489000000 Hz | -1.3 dBmV | 42.5 dB | 0 | 0 |
| 18 | Locked | QAM256 | 7 | 495000000 Hz | -1.6 dBmV | 42.5 dB | 0 | 0 |
| 19 | Locked | QAM256 | 8 | 507000000 Hz | -0.8 dBmV | 43.1 dB | 0 | 0 |
| 20 | Locked | QAM256 | 9 | 513000000 Hz | -1.4 dBmV | 42.6 dB | 0 | 0 |
| 21 | Locked | QAM256 | 10 | 519000000 Hz | -1.5 dBmV | 42.5 dB | 0 | 0 |
| 22 | Locked | QAM256 | 11 | 525000000 Hz | -2.3 dBmV | 41.9 dB | 0 | 0 |
| 23 | Locked | QAM256 | 12 | 531000000 Hz | -2.7 dBmV | 41.9 dB | 0 | 0 |
| 24 | Locked | QAM256 | 17 | 567000000 Hz | -1.9 dBmV | 42.5 dB | 0 | 0 |
Upstream Bonded Channels (Partial Service)
| Channel | Lock Status | US Channel Type | Channel ID | Symbol Rate | Frequency | Power |
| 1 | Locked | ATDMA | 1 | 5120 Ksym/sec | 30100000 Hz | 51.5 dBmV |
| 2 | Locked | ATDMA | 2 | 5120 Ksym/sec | 36500000 Hz | 49 dBmV |
| 3 | Not Locked | Unknown | 3 | 0 Ksym/sec | 17300000 Hz | 0.0 dBmV |
| 4 | Not Locked | Unknown | 4 | 0 Ksym/sec | 23700000 Hz | 0.0 dBmV |
| 5 | Not Locked | Unknown | 0 | 0 Ksym/sec | 0 Hz | 0.0 dBmV |
| 6 | Not Locked | Unknown | 0 | 0 Ksym/sec | 0 Hz | 0.0 dBmV |
| 7 | Not Locked | Unknown | 0 | 0 Ksym/sec | 0 Hz | 0.0 dBmV |
| 8 | Not Locked | Unknown | 0 | 0 Ksym/sec | 0 Hz | 0.0 dBmV |
you only have 2 locked upstreams channels. coupled with your t3t4 errors, did comcast every come out and check the line?
How can I make them Locked? I've spoken to them on the phone and they tested their service and said it was running fine. I've been disconnected at least 15 times this morning. More than usual. Usually is 2-3 times a day.
Its a line/modem issue.
Either the modem's going bad (doubtful) or the line has issues. Their first response is always "our lines fine" because then they have to send a tech out to check it and it costs them $.
if you can, make sure there's no splitters, attenuators, amplifiers in line. Also, move the C7000 to right where the coax enters the home. This prevents the issues from being the wiring within the home. Most isp's charge if the fix/problem is interior to the home.