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k-a-r-a-s
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low power levels (No Ranging Response received)

I'm experiencing frequent (every 2-3 days) and long (a few hours) disconnects of my M200 broadband with the following messages in the logs:

Unicast Ranging Received Abort Response ...
No Ranging Response received - T3 time-out ...

When there is a working connection, the power levels and SNR seem very low:

Downstream bonded channels
Channel	Frequency (Hz)	Power (dBmV)	SNR (dB)	Modulation	Channel ID
1	299000000	-6	34	256 qam	21
2	139000000	-5.5	35	256 qam	1
3	147000000	-6	34	256 qam	2
4	155000000	-6.2	35	256 qam	3
5	163000000	-6.5	35	256 qam	4
6	171000000	-6.9	35	256 qam	5
7	179000000	-7	35	256 qam	6
8	187000000	-7.2	34	256 qam	7
9	195000000	-7.5	35	256 qam	8
10	203000000	-7.5	35	256 qam	9
11	211000000	-7.7	35	256 qam	10
12	219000000	-7.5	35	256 qam	11
13	227000000	-7.7	34	256 qam	12
14	235000000	-7.7	35	256 qam	13
15	243000000	-8	35	256 qam	14
16	251000000	-8.2	35	256 qam	15
17	259000000	-8.4	35	256 qam	16
18	267000000	-8.5	34	256 qam	17
19	275000000	-8.2	35	256 qam	18
20	283000000	-7.4	35	256 qam	19
21	291000000	-6.9	35	256 qam	20
22	307000000	-5.2	35	256 qam	22
23	315000000	-4.5	34	256 qam	23
24	323000000	-4.4	35	256 qam	24
Downstream bonded channels
Channel	Locked Status	RxMER (dB)	Pre RS Errors	Post RS Errors
1	Locked	34.9	1143	0
2	Locked	35.5	523	0
3	Locked	34.9	2249	28
4	Locked	34.9	1388	0
5	Locked	35	843	0
6	Locked	35	1337	0
7	Locked	35	874	0
8	Locked	34.9	2126	0
9	Locked	34.9	1100	0
10	Locked	34.9	1050	15
11	Locked	34.9	1189	0
12	Locked	35	1352	0
13	Locked	35	1935	0
14	Locked	35.7	301	0
15	Locked	35.5	396	0
16	Locked	35.5	263	0
17	Locked	35.5	348	0
18	Locked	35	845	1
19	Locked	34.9	1939	0
20	Locked	35	1146	0
21	Locked	35	385	0
22	Locked	35	398	0
23	Locked	35	425	53
24	Locked	35.5	202	0
Upstream bonded channels
Channel	Frequency (Hz)	Power (dBmV)	Symbol Rate (ksps)	Modulation	Channel ID
1	46200000	5.1	5120	64 qam	3
2	39400000	5.1	5120	64 qam	4
3	53700000	5.1	5120	64 qam	2
4	60300000	5.1	5120	64 qam	1
Upstream bonded channels
Channel	Channel Type	T1 Timeouts	T2 Timeouts	T3 Timeouts	T4 Timeouts
1	ATDMA	0	0	0	0
2	ATDMA	0	0	0	0
3	ATDMA	0	0	0	0
4	ATDMA	0	0	0	0

I don't have an attenuator in my installation, so presumably the power should be boosted by a VM engineer in the cabinet? I would like to arrange an engineer visit.

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Very Insightful Person
Very Insightful Person
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Message 2 of 6
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Re: low power levels (No Ranging Response received)

the 5.1 is a flaw in the code, it should read 51, showing too high, the forum staff should reply in a day or so to run more testing, normally they fix at premises before moving to the cabinet, since the downstream power level could also do with coming down a bit, would make sure all coax (white cable) are finger tight at all points

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Forum Team
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Message 3 of 6
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Re: low power levels (No Ranging Response received)

Hi k-a-r-a-s

 

Thanks for posting and welcome to the community. 

 

There is an SNR issue in your area and the fault reference is F007407971. The estimated fix date is the 23rd of September 2019.

 

Kind regards,

John_GS
Forum Team

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k-a-r-a-s
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Message 4 of 6
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Re: low power levels (No Ranging Response received)

Thanks for the quick replies.

paultechy says the downstream power levels are too high, but after reading other similar threads I thought they are in fact too low and should be closer to 0. Can someone clarify, please?

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jbrennand
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Message 5 of 6
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Re: low power levels (No Ranging Response received)

Paul is absolutely correct.

--------------------
John
--------------------

My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.
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Forum Team (Retired) David_Pn
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Message 6 of 6
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Re: low power levels (No Ranging Response received)

We appreciate that service issues are frustrating k-a-r-a-s a and we apologies for the inconvenience caused.

 

Once the area issue issue mentioned earlier has been resolved we will be able to carry out detailed troubleshooting if this continues.

 

Our apologies for any continued disruption experienced.

David_Pn
Forum Team

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