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Old 26-08-2016, 16:14   #1
beardsley
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Join Date: Jun 2003
Location: Hampshire/Surrey border
Posts: 128
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Bad Broadband Quality Monitor results after Homeworker+ 300Mbit upgrade

Hi. I upgraded to Homeworker+ 300Mbit and yesterday received a shiny new Hub 3 (surprising black rather than the white I expected). I connected last night and after a few reboots if seemed to be working. I did a speedtest and all looked great. Then I switched it to modem mode and the fun started. Over the next couple of hours, if would keep dropping the connection and I had to give it a series of reboots. Eventually it seemed to settle down and is now maintaining the connection.

However the graph from thinkbroadband Broadband Quality Meter look pretty dire.



You can see the red bar where I swapped from the existing Shub 2ac to the Hub3.

This is what I get from the hub status pages

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Cable Modem Status
Item Status Comments
Acquired Downstream Channel(Hz) 299000000 Locked
Ranged Upstream Channel(Hz) 46200000 Locked
Provisioning State Online


Downstream bonded channels
Channel Frequency(Hz) Power (dBmV) SNR(dB) Modulation Channel ID
1 299000000 -0.2 38.9 256 qam 13
2 323000000 -0.5 38.9 256 qam 16
3 315000000 -0.7 38.6 256 qam 15
4 307000000 -0.4 38.9 256 qam 14
5 291000000 -0.5 38.9 256 qam 12
6 283000000 -0.5 38.9 256 qam 11
7 275000000 -0.5 38.9 256 qam 10
8 267000000 -0.2 38.9 256 qam 9
9 259000000 -0.2 38.9 256 qam 8
10 251000000 0.4 38.9 256 qam 7
11 243000000 0.4 38.9 256 qam 6
12 235000000 0.7 38.9 256 qam 5
13 227000000 0.7 38.9 256 qam 4
14 219000000 1 40.3 256 qam 3
15 211000000 1.2 38.9 256 qam 2
16 203000000 1.4 40.3 256 qam 1


Upstream bonded channels
Channel ID Frequency(Hz) Modulation Power (dBmV) Mode Channel Bandwidth(Hz) Symbol Rate (ksps)
13 46200000 ATDMA 47.5 16 qam 6400000 5120
15 32600000 ATDMA 45.8 16 qam 6400000 5120

Operational Configuration
General Configuration Value
Network Access Disabled
Max number of CPEs 1
Baseline Privacy Enabled
Docsis mode Docsis30
Configuration file Vec1d7393ac210ed6.cm

Primary Downstream Service Flow
SFID 241747
Max Traffic Rate 330000000

Primary Upstream Service Flow
SFID 241746
Max Traffic Rate 21000000

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It struck me as strange that 'Network Access' was listed as disabled, but I assume that if this was a problem, it would not be working at all.

Also Upstream power levels are higher than I expected, but I thing are still within spec?

I am hoping to get some collective wisdom from here before I log a call with VM. It is easy enough to explain a fault when something is not working, but trickier when it is sort of working.

Anybody got any ideas?
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