My Stats and PM from Virgin
18-05-2011, 22:16
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#1
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Inactive
Join Date: Nov 2010
Posts: 46
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My Stats and PM from Virgin
Hi
I was over on the Virgin Media Community forums and received the following PM from a member of the VM staff.
"Regarding your post in this thread, I have taken a look at your connection and can see that your modems downstream power levels are too high. We will need to arrange for an engineer to call to alter this. Can you let me know when in the next 7 days you will be available? Our timeslots Monday to Fridays are 8am-12noon, 12noon-4pm and 4pm-7pm. Saturdays 8am-12noon and 12noon-4pm."
Now I am very happy with my service so don't necessarily want to change something and have it mess up. I am on the 30 MB package and have the improved upload speeds eg 3mb. I have a Superhub with R26 firmware.
Speedtest shows I get the full 30mb down and 3mb up.
Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 307000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK
Security Enabled BPI+
--------------------------------------------------------------------------------
Downstream Channels
Lock Status Modulation Channel ID Max Raw Bit Rate Frequency Power SNR Docsis/EuroDocsis locked
Locked QAM256 114 55616000 Kbits/sec 307000000 Hz 11.6 dBmV 43.0 dB Hybrid
Locked QAM256 113 55616000 Kbits/sec 299000000 Hz 11.8 dBmV 42.9 dB Hybrid
Locked QAM256 115 55616000 Kbits/sec 315000000 Hz 11.2 dBmV 42.1 dB Hybrid
Locked QAM256 116 55616000 Kbits/sec 323000000 Hz 10.6 dBmV 42.4 dB Hybrid
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown
--------------------------------------------------------------------------------
Upstream Channels
Lock Status Modulation Channel ID Max Raw Bit Rate Frequency Power
Locked ATDMA 1 20480 Kbits/sec 35800000 Hz 45.4 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
--------------------------------------------------------------------------------
Primary Downstream Service Flow
Downstream(0)
SFID 23812
Max Traffic Rate 33330000 bps
Max Traffic Burst 3044 bytes
Mix Traffic Rate 0 bps
--------------------------------------------------------------------------------
Primary Upstream Service Flow
Upstream(0)
SFID 23811
Max Traffic Rate 3333000 bps
Max Traffic Burst 8160 bytes
Mix Traffic Rate 0 bps
Max Concatenated Burst 8160 bytes
Scheduling Type Best Effort
What do you reckon? Shall I get the engineer round?
Thanks
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18-05-2011, 22:18
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#2
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Permanently Banned
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Re: My Stats and PM from Virgin
Yes you need a technician with that high a downstream and I would book one if you were speaking to me.
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18-05-2011, 22:18
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#3
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cf.mega poster
Join Date: Nov 2010
Location: Stafford
Posts: 4,225
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Re: My Stats and PM from Virgin
it can only make it better, those stats are rather high
you will probably have disconnections in the log?
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18-05-2011, 22:26
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#4
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cf.mega poster
Join Date: Aug 2009
Posts: 5,386
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Re: My Stats and PM from Virgin
Tech will just add an attenuator to modem, will take 30seconds. If your really worried you could just take it off again
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18-05-2011, 22:31
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#5
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Re: My Stats and PM from Virgin
Quote:
Originally Posted by jb66
Tech will just add an attenuator to modem, will take 30seconds. If your really worried you could just take it off again
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11 is the new max now, so probably an attenuator will do it.
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18-05-2011, 22:37
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#6
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cf.mega poster
Join Date: Nov 2010
Location: Stafford
Posts: 4,225
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Re: My Stats and PM from Virgin
Quote:
Originally Posted by Masque
11 is the new max now, so probably an attenuator will do it.
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why is 11 the new max, and why is there a "new max" anyway?
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18-05-2011, 22:44
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#7
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cf.mega poster
Join Date: Aug 2009
Posts: 5,386
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Re: My Stats and PM from Virgin
Probably because as I've been saying for years, a high downstream rarely causes an issue, it's the upstream that's the most important
Most houses that I go to when I swap a modem has a downstream of 10 etc. They all say worked fine for years
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18-05-2011, 22:47
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#8
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cf.mega poster
Join Date: Nov 2010
Location: Stafford
Posts: 4,225
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Re: My Stats and PM from Virgin
Quote:
Originally Posted by jb66
Probably because as I've been saying for years, a high downstream rarely causes an issue, it's the upstream that's the most important
Most houses that I go to when I swap a modem has a downstream of 10 etc. They all say worked fine for years
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mine was causing disconnections at 15
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18-05-2011, 22:54
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#9
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cf.mega poster
Join Date: Aug 2009
Posts: 5,386
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Re: My Stats and PM from Virgin
0db is best I aim to get my customers at about 5db though, just incase another tech moves my customer down a power band in the future
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18-05-2011, 22:55
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#10
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cf.mega poster
Join Date: Nov 2010
Location: Stafford
Posts: 4,225
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Re: My Stats and PM from Virgin
mines between 1 and 2
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18-05-2011, 22:57
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#11
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cf.mega poster
Join Date: Aug 2009
Posts: 5,386
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Re: My Stats and PM from Virgin
Mines -0.5 but then it would be perfect with all my attenuators 
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18-05-2011, 22:59
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#12
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cf.mega poster
Join Date: Nov 2010
Location: Stafford
Posts: 4,225
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Re: My Stats and PM from Virgin
im using a 10db FPA
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18-05-2011, 23:20
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#13
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a giant headend
Join Date: Jan 2011
Location: Liverpool
Posts: 1,169
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Re: My Stats and PM from Virgin
My SH's power levels were -0.2 0 0.2 on the three DS channels. Smack bang in the sweet spot.
The VMNG300 seems to get ones a bit higher, usually 2-3. I should dig out that spare 3db attenuator I have.
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19-05-2011, 04:43
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#14
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Permanently Banned
Join Date: Jan 2009
Location: In a world of no buffering!!
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Re: My Stats and PM from Virgin
Quote:
Originally Posted by craigj2k11
why is 11 the new max, and why is there a "new max" anyway?
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We get more issues above 11 thats why. 
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01-06-2011, 21:07
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#15
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Inactive
Join Date: Nov 2010
Posts: 46
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Re: My Stats and PM from Virgin
Had the engineer round who fitted an attenuator. Here are my new stats.
Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 307000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK
Security Enabled BPI+
--------------------------------------------------------------------------------
Downstream Channels
Lock Status Modulation Channel ID Max Raw Bit Rate Frequency Power SNR Docsis/EuroDocsis locked
Locked QAM256 114 55616000 Kbits/sec 307000000 Hz 0.6 dBmV 42.5 dB Hybrid
Locked QAM256 113 55616000 Kbits/sec 299000000 Hz 0.9 dBmV 42.0 dB Hybrid
Locked QAM256 115 55616000 Kbits/sec 315000000 Hz 0.4 dBmV 41.6 dB Hybrid
Locked QAM256 116 55616000 Kbits/sec 323000000 Hz 0.0 dBmV 41.9 dB Hybrid
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown
--------------------------------------------------------------------------------
Upstream Channels
Lock Status Modulation Channel ID Max Raw Bit Rate Frequency Power
Locked ATDMA 1 20480 Kbits/sec 35800000 Hz 45.9 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
--------------------------------------------------------------------------------
Primary Downstream Service Flow
Downstream(0)
SFID 26489
Max Traffic Rate 33330000 bps
Max Traffic Burst 3044 bytes
Mix Traffic Rate 0 bps
--------------------------------------------------------------------------------
Primary Upstream Service Flow
Upstream(0)
SFID 26484
Max Traffic Rate 3333000 bps
Max Traffic Burst 8160 bytes
Mix Traffic Rate 0 bps
Max Concatenated Burst 8160 bytes
Scheduling Type Best Effort
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