Thought I'd post an update as I've recently been checking my stats and note that both G.INP and Vectoring have been switched on. I'm round 500m from the (Huawei) cabinet and on a capped 40 Mbps service.
I doubt either vectoring or G.INP will make a difference as I'm capped at 40 Mbps, but I did notice that when G.INP was switched on the DS Attainable Rate dropped from around 56000000 bps to 52199312 bps which is a significant drop.
When I get time I might try one of the firmware versions that utilise vectoring unless Draytek are about to release an update to the UK 3.7.8 series, and see if that makes any difference to the SNR. This has been stable at 5-6 dB from the time I went on to fibre.
> vdsl optn status
trellis [US] = ON, [DS] = ON.
bitswap [US] = 0, [DS] = 0.
[0: default(ON), 1: ON, 2: OFF]
sra [US] = 0, [DS] = 0.
[0: default, 1: MANUAL, 2: AT_INIT, 3: DYNAMIC , 4: DYNAMIC_SOS]
retx [US] = ---, [DS] = ON.
aelem ON
G.Vector ON
>
> show adsl
ATU-R Info (hw: annex A, f/w: annex A/B/C)
Running Mode : 17A State : SHOWTIME
DS Actual Rate : 40000000 bps US Actual Rate : 10000000 bps
DS Attainable Rate : 52199312 bps US Attainable Rate : 16666000 bps
DS Path Mode : Interleave US Path Mode : Interleave
DS Interleave Depth : 0 US Interleave Depth : 0
NE Current Attenuation : 18 dB Cur SNR Margin : 5 dB
DS actual PSD : 7. 9 dB US actual PSD : 13. 1 dB
NE CRC Count : 0 FE CRC Count : 0
NE ES Count : 0 FE ES Count : 0
Xdsl Reset Times : 0 Xdsl Link Times : 3
ITU Version[0] : b5004946 ITU Version[1] : 544e0000
VDSL Firmware Version : 05-04-08-00-00-06
Power Management Mode : DSL_G997_PMS_L0
Test Mode : DISABLE
ATU-C Info
Far Current Attenuation : 0 dB Far SNR Margin : 9 dB
CO ITU Version[0] : b5004244 CO ITU Version[1] : 434da485
DSLAM CHIPSET VENDOR : < BDCM >
