Well firstly, a quick google search brings up a few users on the VM forum using QAM64 upstreams, so theres one thing we have evidence of...
http://community.virginmedia.com/t5/...t/true#M135133
Quote:
Upstream:
US-1 US-2 US-3 US-4
Channel Type 2.0 N/A N/A 2.0
Channel ID 1 N/A N/A 2
Frequency (Hz) 45800000 N/A N/A 35800000
Ranging Status Success Other Other Success
Modulation 64QAM N/A N/A 64QAM
Symbol Rate (Sym/sec) 5120000 N/A N/A 5120000
Mini-Slot Size 4 N/A N/A 4
Power Level (dBmV) 38.00 N/A N/A 37.25
T1 Timeouts 0 0 0 0
T2 Timeouts 0 0 0 0
T3 Timeouts 1 0 0 0
T4 Timeouts 0 0 0 0
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And these guys have a 16QAM and 64QAM upstream:
http://community.virginmedia.com/t5/...t/true#M135529
Quote:
Upstream Channels Lock Status Channel ID Frequency Modulation Tx Power Mode Channel Bandwidth Symbol Rate
Locked 6 27400000 Hz ATDMA 52.3 dBmV 64QAM 6400000 30720 Kbits/sec
Locked 4 35800000 Hz ATDMA 51.8 dBmV 16QAM 6400000 20480 Kbits/sec
Unlocked 0 0 Hz Unknown 0.0 dBmV Unknown Unknown 0 Kbits/sec
Unlocked 0 0 Hz Unknown 0.0 dBmV Unknown Unknown 0 Kbits/sec
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http://community.virginmedia.com/t5/...t/true#M136965
Quote:
Upstream Channels Lock Status Channel ID Frequency Modulation Tx Power Mode Channel Bandwidth Symbol Rate Locked
1 37600000 Hz ATDMA 33.8 dBmV 64QAM 6400000 30720 Kbits/sec Locked
3 24400000 Hz ATDMA 33.5 dBmV 16QAM 6400000 20480 Kbits/sec Unlocked
0 0 Hz Unknown 0.0 dBmV Unknown Unknown 0 Kbits/sec Unlocked
0 0 Hz Unknown 0.0 dBmV Unknown Unknown 0 Kbits/sec
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So from TC's stats, the things I can see no other proof of are:
Quote:
Originally Posted by telfordcable
Upstream US-1 US-2 US-3 US-4
Channel Type 2.0 N/A N/A 2.0
Channel ID 33 N/A N/A 34
Frequency (Hz) 46200000 N/A N/A 39400000
Ranging Status Success Other Other Success
Modulation 64QAM N/A N/A 64QAM
Symbol Rate (Sym/sec) 1024000 N/A N/A 1024000
Mini-Slot Size 4 N/A N/A 4
Power Level (dBmV) 47.80 N/A N/A 47.50
General Configuration Network Access Allowed
Maximum Number of CPEs 1
Baseline Privacy Enabled
DOCSIS Mode EuroDOCSIS 3.0
Config File
Primary Downstream Service Flow SFID 21931
Max Traffic Rate 135000000 bps
Max Traffic Burst 10000 bytes
Min Traffic Rate 0 bps
Primary Upstream Service Flow SFID 21930
Max Traffic Rate 15000000 bps
Max Traffic Burst 16320 bytes
Min Traffic Rate 0 bps
Max Concatenated Burst 16320 bytes
Scheduling Type Best Effort
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So the only things I can see out of place is the reduced symbol rate (even the users on the VM forum with QAM64 upstreams have 5120000Sym/sec) and the traffic rates, everything else checks out, so I have no reason to doubt him.