No Ranging Response received - T3 time-out

[badhodor123]

Hi,

Looking at the router network log, I see numerous warnings:

No Ranging Response received - T3 time-out

Also, as I read in other threads, I notice upstream modulation is at 16qam, can someone please look into it or advice if I need an engineer visit?

[Paul_DN]

Hi badhodor123,

I have done further checks and things are better including your Quam is now 256 as it should be, please keep as is and run the BQM for the next 24 Hours so we can see how it compares?

Regards

Paul. 

[badhodor123]

Hi Paul,

The downstream QAM was 256 before and still the same, upstream was 16 before and still the same. Speeds have reduced massively, if anything its actually gotten worse. Maybe due to testing speeds in peak time?

I will revert after another 12 hrs and further 12 hrs after that to have 3 samples over a 24 hr period.

[badhodor123]

12 hours later Logs - 2 T3 Timeouts, upstread still 16 QAM.

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

1	723000000	5.5	40	256 qam	40
2	539000000	6	40	256 qam	17
3	547000000	6	40	256 qam	18
4	555000000	6.1	40	256 qam	19
5	563000000	6.1	40	256 qam	20
6	571000000	6	40	256 qam	21
7	579000000	6	40	256 qam	22
8	587000000	6.1	40	256 qam	23
9	595000000	6.4	40	256 qam	24
10	603000000	6.3	40	256 qam	25
11	611000000	6	40	256 qam	26
12	619000000	6	40	256 qam	27
13	627000000	5.9	40	256 qam	28
14	635000000	5.9	38	256 qam	29
15	643000000	5.6	38	256 qam	30
16	651000000	5.6	40	256 qam	31
17	659000000	5.9	40	256 qam	32
18	667000000	5.9	40	256 qam	33
19	675000000	5.9	40	256 qam	34
20	683000000	5.5	40	256 qam	35
21	691000000	5.3	40	256 qam	36
22	699000000	5	40	256 qam	37
23	707000000	5	40	256 qam	38
24	715000000	5.3	40	256 qam	39

Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1	Locked	40.3	201	14
2	Locked	40.9	339	398
3	Locked	40.9	370	357
4	Locked	40.3	349	362
5	Locked	40.9	344	332
6	Locked	40.3	361	337
7	Locked	40.3	369	327
8	Locked	40.3	365	309
9	Locked	40.9	412	244
10	Locked	40.3	368	232
11	Locked	40.9	405	147
12	Locked	40.9	395	172
13	Locked	40.3	385	126
14	Locked	38.9	390	105
15	Locked	38.9	390	70
16	Locked	40.3	357	86
17	Locked	40.3	310	52
18	Locked	40.3	342	54
19	Locked	40.3	306	44
20	Locked	40.3	301	42
21	Locked	40.3	271	17
22	Locked	40.9	290	31
23	Locked	40.3	246	31
24	Locked	40.3	275	24

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1	46199939	42.2	5120	16 qam	11
2	39400017	40.8	5120	16 qam	12
3	53700075	42.3	5120	16 qam	10
4	60299954	42.3	5120	16 qam	9

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	ATDMA	0	0	0	0
2	ATDMA	0	0	2	0
3	ATDMA	0	0	0	0
4	ATDMA	0	0	0	0

[badhodor123]

As you can see still getting T3 Timeouts.   Network Log

Time Priority Description

03/08/2021 07:42:5	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2021 23:02:16	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2021 18:56:42	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/08/2021 11:22:54	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
31/07/2021 11:32:7	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

[Megan_L · Accepted solution]

Hi badhodor123, 

Thanks for using the forums to get this issue with your broadband services looked into, I am sorry if this has been causing some frustration. I would be more than happy to look into this for you.

I have already taken a look at your services on my side and everything is in tip top shape - all green and your downstream/upstream levels are all within spec which is good. 

I understand you're concerned with the warnings on your Hub settings, however if you could give us more of a description of how your connection is performing it might give us a better view of your issue.

• What problems do you experience when using your internet?
• Do these issues occur on WIFI or hardwired connections?
• When these issues occur, do any lights appear on the Hub?
• If it's slow speeds that you're getting, can you please do a Speed Test on a hard wired PC/laptop and let us know the results?
• If it's more intermittent connections, I would suggest setting up a BMQ graph so we can visually see what is occurring, please post the link after 24 hours of usage so we can take a look. 

Please get back to us and try to answer my questions in bullet points so it's easier to track 🙂

Thanks,

Megan_L

[badhodor123]

Thanks megan, i was wondering whether it would be possible to swap my hub3 to a hub4 router? Docsis3.1 is already enabled on my line and I recently renewed my contract as well and currently on m500.

during peak times my speeds are never above 400mbps, not sure if its due to congestion or the hub3?

[Lee_R]

Hi @badhodor123 thanks for coming back to us.

I am sorry, if you're not on our Gig1 package, there is no real benefit in swapping to a hub 4.  If the hub 4 is not showing in your offers on your online account, or in your emails then we would not be able to arrange a swap.

Regards

Lee

[Lee_R]

Also badhodor123, 

When you're less busy could you please respond to the bullet pointed questions from Megan's last post?

Regards

Lee