CAX80: Modem is offline - Please check RF connection

Apprentice

Sep 18, 2020

I am having the exact same issue with Cox in Arizona. Router loses the Internet connection 1-2X per day and I have to reboot to get it back. Cox came out and replaced my cable line just to be sure, said they are not seeing any timeouts or packet loss and the signal levels are all in range.

Is this the table you're referring to?

Cable Connection

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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.

Starting Frequency

Startup Procedure

Procedure	Status	Comment
Acquire Downstream Channel	783 MHz	Locked
Connectivity State	OK	Operational
Boot State	OK	Operational
Security	Enabled	BPI+

Downstream Bonded Channels

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	Uncorrectables
1	Locked	256 QAM	1	783000000 Hz	0.6 dBmV	39.3 dB	9372	14112
2	Locked	256 QAM	33	357000000 Hz	3.2 dBmV	40.5 dB	17	0
3	Locked	256 QAM	2	789000000 Hz	0.5 dBmV	39.1 dB	1518	2839
4	Locked	256 QAM	3	795000000 Hz	0.2 dBmV	39.0 dB	57	0
5	Locked	256 QAM	4	801000000 Hz	0.0 dBmV	38.8 dB	79	0
6	Locked	256 QAM	5	807000000 Hz	0.0 dBmV	38.8 dB	91	0
7	Locked	256 QAM	6	813000000 Hz	0.0 dBmV	38.7 dB	89	0
8	Locked	256 QAM	7	819000000 Hz	0.2 dBmV	38.8 dB	94	0
9	Locked	256 QAM	8	825000000 Hz	0.2 dBmV	38.7 dB	909	1767
10	Locked	256 QAM	9	831000000 Hz	0.1 dBmV	38.6 dB	381	914
11	Locked	256 QAM	10	837000000 Hz	0.0 dBmV	38.4 dB	738	1543
12	Locked	256 QAM	11	843000000 Hz	0.2 dBmV	38.4 dB	82	0
13	Locked	256 QAM	12	849000000 Hz	0.4 dBmV	38.3 dB	130	0
14	Locked	256 QAM	13	855000000 Hz	0.4 dBmV	38.3 dB	122	0
15	Locked	256 QAM	14	861000000 Hz	0.0 dBmV	38.1 dB	141	0
16	Locked	256 QAM	15	867000000 Hz	0.0 dBmV	38.1 dB	158	0
17	Locked	256 QAM	16	873000000 Hz	0.1 dBmV	38.2 dB	136	0
18	Locked	256 QAM	34	363000000 Hz	3.1 dBmV	40.7 dB	22	0
19	Locked	256 QAM	35	369000000 Hz	2.7 dBmV	40.7 dB	52	0
20	Locked	256 QAM	36	375000000 Hz	2.6 dBmV	40.6 dB	18	0
21	Locked	256 QAM	37	381000000 Hz	2.7 dBmV	40.7 dB	23	0
22	Locked	256 QAM	38	387000000 Hz	2.7 dBmV	40.7 dB	58	0
23	Locked	256 QAM	39	393000000 Hz	2.6 dBmV	40.7 dB	644	276
24	Locked	256 QAM	40	399000000 Hz	2.2 dBmV	40.6 dB	13	0
25	Locked	256 QAM	41	405000000 Hz	2.1 dBmV	40.6 dB	12	0
26	Locked	256 QAM	42	411000000 Hz	2.1 dBmV	40.5 dB	73	0
27	Locked	256 QAM	43	417000000 Hz	2.2 dBmV	40.6 dB	53	0
28	Locked	256 QAM	44	423000000 Hz	2.3 dBmV	40.6 dB	41	0
29	Locked	256 QAM	45	429000000 Hz	2.1 dBmV	40.5 dB	73	0
30	Locked	256 QAM	46	435000000 Hz	2.0 dBmV	40.5 dB	56	0
31	Locked	256 QAM	47	441000000 Hz	2.0 dBmV	40.6 dB	173	0
32	Locked	256 QAM	48	447000000 Hz	1.9 dBmV	40.6 dB	173	0

Upstream Bonded Channels

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	6	2560 Ksym/sec	12900000 Hz	30.5 dBmV
2	Locked	ATDMA	1	5120 Ksym/sec	17700000 Hz	27.8 dBmV
3	Locked	ATDMA	2	5120 Ksym/sec	24100000 Hz	29.3 dBmV
4	Locked	ATDMA	3	5120 Ksym/sec	30500000 Hz	30.0 dBmV
5	Locked	ATDMA	4	5120 Ksym/sec	36900000 Hz	31.0 dBmV
6	Not Locked	Unknown	0	0	0	0.0 dBmV
7	Not Locked	Unknown	0	0	0	0.0 dBmV
8	Not Locked	Unknown	0	0	0	0.0 dBmV

Downstream OFDM Channels

Channel	Lock Status	Modulation / Profile ID	Channel ID	Frequency	Power	SNR / MER	Active Subcarrier Number Range	Unerrored Codewords	Correctable Codewords	Uncorrectable Codewords
1	Locked	0 ,1 ,2 ,3	159	300000000 Hz	7.48 dBmV	43.0 dB	1108 ~ 2987	917553354	210270956	8
2	Not Locked	0	0	0 Hz	0 dBmV	0 dB	0 ~ 4095	0	0	0

Upstream OFDMA Channels

Channel	Lock Status	Modulation / Profile ID	Channel ID	Frequency	Power
1	Not Locked	0	0	0 Hz	0 dBmV
2	Not Locked	0	0	0 Hz	0 dBmV

Extended Upstream Transmit Power

Enable Extended Upstream Transmit Power

Current System Time:Fri Sep 18 12:55:27 2020

System Up Time:05:21:15

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CAX80: Modem is offline - Please check RF connection