FTTC Trial G.INP Upstream

I have notice that DLM acted on my line to put G.INP Enabled on upstream with the following below:

Downstream Upstream
Line attenuation (dB): 11.8 0.0
Signal attenuation (dB): Not available on VDSL2
Connection speed (kbps): 79999 20000
SNR margin (dB): 7.0 10.4
Power (dBm): 12.4 0.6
Interleave depth: 16 4
INP: 46.00 55.00
G.INP: Enabled Enabled
Vectoring status: 5 (VECT_UNCONFIGURED)

Downstream Upstream
General
rtx_tx 9699948 4493056
rtx_c 101455 7121872
rtx_uc 62 1366924
LEFTRS 1225 17941
minEFTR 79999 20000
errFreeBits 71079527 599937039
Bearer 0
RxQueue 57 135
TxQueue 19 27
G.INP Framing 18 18
G.INP Lookback 19 27
RRC Bits 24 24
Interleave depth 16 4
INP 46.00 55.00
INPRein 0.00 1.00
Delay 0 0
Bearer 1
Interleave depth 3 1
INP 4.00 4.00
INPRein 4.00 4.00
Delay 3 0

Make me wondering why would Openreach want to trial upstream with low/medium/high retransmission with interleaved on? I thought FTTC DLM will take no action on upstream. Only the downstream?

Is it to do with affect by G.Fast higher upstream 50Meg to ensure 20Meg is stable on FTTC from the street cabinet?

DLM take action after 24 hours and made these changed:

Downstream Upstream
Line Coding (Trellis) On On
SNR Margin (dB) 7.9 8.4
Attenuation (dB) 11.8 0.0
Output Power (dBm) 12.4 0.7
Attainable Rate (Kbps) 89735 28279
Rate (Kbps) 79999 19000
B (# of bytes in Mux Data Frame) 130 163
M (# of Mux Data Frames in an RS codeword) 1 1
T (# of Mux Data Frames in an OH sub-frame) 0 0
R (# of redundancy bytes in the RS codeword) 8 10
S (# of data symbols over which the RS code word spans) 0.0518 0.2726
L (# of bits transmitted in each data symbol) 21468 5106
D (interleaver depth) 16 2
I (interleaver block size in bytes) 139 174
N (RS codeword size) 139 174
Delay (msec) 0 0
INP (DMT symbol) 46.00 56.00

Downstream Upstream
General
rtx_tx 9784214 1347897
rtx_c 25067 9358811
rtx_uc 48285 1492413
LEFTRS 433 19538
minEFTR 79982 19002
errFreeBits 38300654 616078167
Bearer 0
RxQueue 57 130
TxQueue 19 26
G.INP Framing 18 18
G.INP Lookback 19 26
RRC Bits 24 24
Interleave depth 16 2
INP 46.00 56.00
INPRein 0.00 1.00
Delay 0 0
Bearer 1
Interleave depth 3 1
INP 4.00 4.00
INPRein 4.00 4.00
Delay 3 0

The last 24 hours errored was very badly on upstream:

Since Link time = 1 days 11 sec
FEC: 119270905 92923313
CRC: 63 1727
ES: 35 1145
SES: 0 886
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0

Before upstream trial was zero clean spot on both ES and SES.

What the hell going on Openreach with this silly unfit for purpose upstream trial? Are they going to reduced upstream for new evil DLM?

Had a resync on my Vigor 2762 this morning and it looks like my dlm has been reset as all the upstream error values have been reset also g.inp has been enabled on the upstream also.

Could it be something to do with this - https://www.ispreview.co.uk/index.php/2019/06/openre...

Mabye the trial was successful they have starting rolling it out for everyone? Hopefully as my line as always been very unstable on vdsl with lots of errors! Since the resync ealier this morning I have had no errors

Edited by deleted (Mon 07-Oct-19 12:52:16)

Post the DSL stats and I'll tell you.

That trial was for higher levels of retx.
Upstream retx has always been a thing

DrayTek> vdsl status
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Running Mode : 17A State : SHOWTIME
DS Actual Rate : 70110000 bps US Actual Rate : 18024000 bps
DS Attainable Rate : 70295128 bps US Attainable Rate : 18025000 bps
DS Path Mode : Fast US Path Mode : Fast
DS Interleave Depth : 1 US Interleave Depth : 1
NE Current Attenuation : 17 dB Cur SNR Margin : 3 dB
DS actual PSD : 6. 8 dB US actual PSD : 12. 7 dB
NE CRC Count : 0 FE CRC Count : 0
NE ES Count : 0 FE ES Count : 0
Xdsl Reset Times : 0 Xdsl Link Times : 1
ITU Version[0] : fe004452 ITU Version[1] : 41590000
VDSL Firmware Version : 07-07-09-05-01-07 [with Vectoring support]
Power Management Mode : DSL_G997_PMS_L0
Test Mode : DISABLE
-------------------------------- ATU-C Info ---------------------------------
Far Current Attenuation : 18 dB Far SNR Margin : 5 dB
CO ITU Version[0] : b5004244 CO ITU Version[1] : 434db12d
DSLAM CHIPSET VENDOR : < BDCM >
DrayTek> vdsl status more
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Near End Far End Note
Trellis : 1 1
Bitswap : 1 1
ReTxEnable : 1 1
VirtualNoise : 0 0
20BitSupport : 0 0
LatencyPath : 0 0
LOS : 0 0
LOF : 0 0
LPR : 0 0
LOM : 0 0
SosSuccess : 0 0
NCD : 0 0
LCD : 0 0
FECS : 0 4081 (seconds)
ES : 0 0 (seconds)
SES : 0 0 (seconds)
LOSS : 0 0 (seconds)
UAS : 31 146 (seconds)
HECError : 0 0
CRC : 0 0
INP : 235 195 (symbols)
INTLVDelay : 0 20 (1/100 ms)
NFEC : 32 32
RFEC : 16 16
LSYMB : 16 16
INTLVBLOCK : 32 32
AELEM : 0 ----

hmm, I'm forgetting DrayTek don't give the full info for both Bearers/paths.
Much of the G.INP info is missing.

Looks like any other DrayTek with G.INP/ReTx enabled to be honest.