CM700 Modem Internet Disconnects Every Day

Question

I have been dealing with my internet disconnecting at least once a day for a few minutes which finally led me to my modem showing event logs that say "Unicast Ranging Received Abort Response - initializing MAC" and "No Ranging Response received - T3 time-out".

I have searched the forums here but every answer has been something regarding my ISP and getting the lines checked. Unfortunately that is the first thing I did. The tech said there was a lot of noise and put a new line in and assured me it wouldn't happen again. No splitters or amplifiers. It has happened every day since he left so I am not sure where else to turn except getting a new modem?

Any additional thoughts on how I can go about this issue? Here are the recent logs:

Dec 08 2021 12:23:24	Critical (3)	Unicast Ranging Received Abort Response - initializing MAC
Dec 08 2021 12:23:24	Critical (3)	No Ranging Response received - T3 time-out
Dec 08 2021 12:23:44	Critical (3)	Unicast Ranging Received Abort Response - initializing MAC
Dec 08 2021 12:23:44	Critical (3)	No Ranging Response received - T3 time-out
Dec 08 2021 12:24:04	Critical (3)	Unicast Ranging Received Abort Response - initializing MAC
Dec 08 2021 12:24:04	Critical (3)	No Ranging Response received - T3 time-out
Dec 08 2021 12:24:44	Critical (3)	Unicast Ranging Received Abort Response - initializing MAC
Dec 08 2021 12:24:44	Critical (3)	No Ranging Response received - T3 time-out

Startup Procedure

Procedure	Status	Comment
Acquire Downstream Channel	951000000 Hz	Locked
Connectivity State	Ok	Operational
Boot State	Ok	Operational
Security	Enabled	BPI+
IP Provisioning Mode	Honor MDD	honorMdd(4)

Downstream:

Downstream Bonded Channels

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	UnCorrectables
1	Locked	QAM 256	33	357000000 Hz	1.4 dBmV	39.5 dB	14	0
2	Locked	QAM 256	34	363000000 Hz	1.4 dBmV	39.9 dB	7	0
3	Locked	QAM 256	35	369000000 Hz	1.2 dBmV	39.9 dB	20	0
4	Locked	QAM 256	36	375000000 Hz	1.2 dBmV	39.9 dB	22	0
5	Locked	QAM 256	37	381000000 Hz	1.2 dBmV	39.5 dB	18	0
6	Locked	QAM 256	38	387000000 Hz	1.0 dBmV	39.9 dB	12	0
7	Locked	QAM 256	39	393000000 Hz	1.0 dBmV	39.9 dB	7	0
8	Locked	QAM 256	45	429000000 Hz	0.7 dBmV	39.9 dB	13	0
9	Locked	QAM 256	1	783000000 Hz	0.0 dBmV	38.6 dB	531	0
10	Locked	QAM 256	2	789000000 Hz	-0.2 dBmV	37.6 dB	520	0
11	Locked	QAM 256	3	795000000 Hz	-0.2 dBmV	37.3 dB	808	0
12	Locked	QAM 256	4	801000000 Hz	-0.4 dBmV	36.6 dB	776	0
13	Locked	QAM 256	5	807000000 Hz	-0.5 dBmV	36.6 dB	978	0
14	Locked	QAM 256	6	813000000 Hz	-0.4 dBmV	37.3 dB	953	0
15	Locked	QAM 256	7	819000000 Hz	0.0 dBmV	37.6 dB	779	0
16	Locked	QAM 256	8	825000000 Hz	-0.2 dBmV	37.6 dB	633	0
17	Locked	QAM 256	9	831000000 Hz	-0.5 dBmV	37.6 dB	909	0
18	Locked	QAM 256	10	837000000 Hz	-0.7 dBmV	37.6 dB	858	0
19	Locked	QAM 256	11	843000000 Hz	-0.7 dBmV	37.3 dB	837	1
20	Locked	QAM 256	12	849000000 Hz	-0.7 dBmV	37.6 dB	1069	0
21	Locked	QAM 256	13	855000000 Hz	-1.0 dBmV	37.3 dB	1112	0
22	Locked	QAM 256	14	861000000 Hz	-0.7 dBmV	37.3 dB	939	0
23	Locked	QAM 256	15	867000000 Hz	-0.7 dBmV	37.6 dB	1357	1
24	Locked	QAM 256	16	873000000 Hz	-1.0 dBmV	37.3 dB	1272	0
25	Locked	QAM 256	17	879000000 Hz	-1.4 dBmV	37.6 dB	1510	0
26	Locked	QAM 256	18	885000000 Hz	-1.0 dBmV	37.6 dB	1666	0
27	Locked	QAM 256	21	903000000 Hz	-1.5 dBmV	36.6 dB	2009	1
28	Locked	QAM 256	28	945000000 Hz	-0.2 dBmV	37.3 dB	399	0
29	Locked	QAM 256	29	951000000 Hz	0.0 dBmV	37.6 dB	262	0
30	Locked	QAM 256	30	957000000 Hz	0.2 dBmV	37.3 dB	143	0
31	Locked	QAM 256	31	963000000 Hz	0.0 dBmV	36.8 dB	130	0
32	Locked	QAM 256	32	969000000 Hz	-0.4 dBmV	37.3 dB	80	0

Upstream:

Upstream Bonded Channels

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	1	5120 Ksym/sec	19400000 Hz	34.0 dBmV
2	Locked	ATDMA	2	5120 Ksym/sec	25800000 Hz	34.0 dBmV
3	Locked	ATDMA	3	5120 Ksym/sec	32200000 Hz	34.0 dBmV
4	Locked	ATDMA	4	5120 Ksym/sec	38600000 Hz	34.5 dBmV
5	Not Locked	N/A	Unknown	0 Ksym/sec	0 Hz	0.0 dBmV
6	Not Locked	N/A	Unknown	0 Ksym/sec	0 Hz	0.0 dBmV
7	Not Locked	N/A	Unknown	0 Ksym/sec	0 Hz	0.0 dBmV
8	Not Locked	N/A	Unknown	0 Ksym/sec	0 Hz	0.0 dBmV

plemans · Answer

You have errors in your line and your logs are indicating issues.&nbsp;
check your line for kinks, damage, old/bad/cheap/corroded/damaged connectors and replace them if you have them.
Remove any splitters, amplifiers, or signal attenuators from the line.&nbsp;
also, you can move the modem to right where the coax comes into the home to prevent the line in the home from being the issues.&nbsp;
If you still get the errors, then the ISP would need to check the line.&nbsp;

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CM700 Modem Internet Disconnects Every Day

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