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Virgin Media to Double Broadband Speed
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Old 23-03-2012, 12:11   #1501
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Re: Virgin Media to Double Broadband Speed

I got all excited this morning after seeing a 10 minute drop-out on the TBB monitor just before 8am.. Thought it might be the upgrade..but alas it wasn't
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Old 23-03-2012, 12:13   #1502
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Re: Virgin Media to Double Broadband Speed

Quote:
Originally Posted by SnoopZ View Post
I did have to reboot the shub though as the 5th channel was showing a power level of 47 dBmV before it displayed the normal value.
Mine's always at 45ish
Is that not right then SnoopZ?
:edit: should have said always at 45ish until I reboot.
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Old 23-03-2012, 12:21   #1503
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Re: Virgin Media to Double Broadband Speed

Quote:
Originally Posted by Blackened View Post
Mine's always at 45ish
Is that not right then SnoopZ?
:edit: should have said always at 45ish until I reboot.
Optimal levels for downstream power are around -3 to +7 i believe, so your 45 is way out of spec.


Quote:
Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 315000000 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 54 55616000 Kbits/sec 315000000 Hz -1.2 dBmV 36.1 dB Hybrid
Locked QAM256 49 55616000 Kbits/sec 291000000 Hz -0.5 dBmV 36.1 dB Hybrid
Locked QAM256 50 55616000 Kbits/sec 299000000 Hz -0.6 dBmV 36.2 dB Hybrid
Locked QAM256 53 55616000 Kbits/sec 307000000 Hz -0.6 dBmV 36.4 dB Hybrid
Locked QAM256 55 55616000 Kbits/sec 323000000 Hz -1.4 dBmV 36.7 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

Upstream Channels
Lock Status Modulation Channel ID Max Raw Bit Rate Frequency Power
Locked ATDMA 2 20480 Kbits/sec 35800000 Hz 44.5 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 5882
Max Traffic Rate 33330000 bps
Max Traffic Burst 3044 bytes
Mix Traffic Rate 0 bps

Primary Upstream Service Flow
Upstream(0)
SFID 5881
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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Old 23-03-2012, 12:26   #1504
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Re: Virgin Media to Double Broadband Speed

Quote:
Originally Posted by SnoopZ View Post
Optimal levels for downstream power are around -3 to +7 i believe, so your 45 is way out of spec.
The 45 will be the SNR, not power levels.
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Old 23-03-2012, 12:32   #1505
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Re: Virgin Media to Double Broadband Speed

Quote:
Originally Posted by jimexbox View Post
The 45 will be the SNR, not power levels.
My 47 was my power level on the 5th downstream channel until a reboot.
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Old 23-03-2012, 12:33   #1506
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Re: Virgin Media to Double Broadband Speed

Quote:
Originally Posted by SnoopZ View Post
My 47 was my power level on the 5th downstream channel until a reboot.
Wow. Did you have any browsing issues?
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Old 23-03-2012, 12:41   #1507
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Re: Virgin Media to Double Broadband Speed

If you see my post 1505 you can see my power levels are back to normal now.

This 47 i am talking about was literally right after the 5th channel was added, and a reboot cured it, the internet worked normally though when it was 47.
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Old 23-03-2012, 12:59   #1508
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Re: Virgin Media to Double Broadband Speed

Prior to yesterday I had 4 DS channels. Now I have 4, 6 or 7 after reboot, upload speed has dropped to 3Mb from 10 and the data transfer LED is flashing all the time even when no data is flowing.
100Mb Engineer booked for tomorrow.
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Old 23-03-2012, 13:28   #1509
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Re: Virgin Media to Double Broadband Speed

Quote:
Originally Posted by SnoopZ View Post
Cambridge CB24 has had another downstream channel added this morning making it 5 but still only 1 upstream, i was hoping for 8 channels due to high congestion at peak times.

I did have to reboot the shub though as the 5th channel was showing a power level of 47 dBmV before it displayed the normal value.
Can you only check if additional channels have been added if you have a Hub?

Sorry for the noob question.
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Old 23-03-2012, 14:12   #1510
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Re: Virgin Media to Double Broadband Speed

Quote:
Originally Posted by cookster View Post
Can you only check if additional channels have been added if you have a Hub?

Sorry for the noob question.
Only the superhub can use 8 downstream channels. The other modems are 4 channels only so you can't tell.
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Old 23-03-2012, 14:38   #1511
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Re: Virgin Media to Double Broadband Speed

The hub is not 4 channels only.
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Old 23-03-2012, 18:29   #1512
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Re: Virgin Media to Double Broadband Speed

Mine download channels have changed from 4 to 6 with the same 1 channel upload. also the power has dropped from +1.2'ish to -1.6'ish
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Old 23-03-2012, 18:32   #1513
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Re: Virgin Media to Double Broadband Speed

nice, I havent heard of an area having 6 channels yet so you might be the first
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Old 23-03-2012, 18:34   #1514
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Re: Virgin Media to Double Broadband Speed

i am in the cosham area it that is of any help
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Old 23-03-2012, 18:37   #1515
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Re: Virgin Media to Double Broadband Speed

Quote:
Originally Posted by jimexbox View Post
The 45 will be the SNR, not power levels.
No, it was power on the 5th channel. I notice it quite a lot as it sticks out on the table like a sore thumb.
All seems to be OK at the moment though, but there were never any browsing issues, or otherwise.
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