I've been having a discussion with PN about our line.
The background to this is that our exchange was a hot VP. For whatever reason, no interleaving or G.INP would apply to our line so it tanked our speed instead. Engineer came on Sept 6th to confirm our line was fine but that the exchange was the cause. Line was reset on the 7th but the speed dropped again.
The profile was reset on the 25th after our line was migrated to a cooler vlan but before works were completed to expand the exchange (which was due on the 30th). There were still quite a few errors and speed fluctuation but nowhere near as bad - probably because interleaving.
It doesn't appear they ever reset our line after the work was completed because my profile has been the same since the 25th.
====================================================================================
VDSL Training Status: Showtime
Mode: VDSL2 Annex B
VDSL Profile: Profile 17a
G.Vector: Disable
Traffic Type: PTM Mode
Link Uptime: 0 day: 17 hours: 25 minutes
====================================================================================
VDSL Port Details Upstream Downstream
Line Rate: 20.063 Mbps 66.996 Mbps
Actual Net Data Rate: 19.999 Mbps 66.997 Mbps
Trellis Coding: ON ON
SNR Margin: 15.0 dB 7.7 dB
Actual Delay: 0 ms 0 ms
Transmit Power: 6.9 dBm 13.0 dBm
Receive Power: -8.2 dBm -3.5 dBm
Actual INP: 0.0 symbols 51.0 symbols
Total Attenuation: 0.0 dB 17.2 dB
Attainable Net Data Rate: 23.828 Mbps 74.509 Mbps
====================================================================================
VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
Line Attenuation(dB): 5.1 21.5 32.4 N/A N/A 12.0 27.6 42.1
Signal Attenuation(dB): 5.1 20.8 31.8 N/A N/A 13.3 27.4 42.1
SNR Margin(dB): 15.2 15.0 15.0 N/A N/A 7.6 7.6 7.7
TX Power(dBm): -3.2 -21.6 6.6 N/A N/A 9.6 7.9 6.9
====================================================================================
VDSL Counters
Downstream Upstream
Since Link time = 25 min 21 sec
FEC: 3620290 516
CRC: 0 93
ES: 0 81
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 3 min 2 sec
FEC: 2715 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 10999 21
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 18 hours 18 min 2 sec
FEC: 3796872 518
CRC: 572 96
ES: 11 84
SES: 11 0
UAS: 192 181
LOS: 1 0
LOF: 8 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 3808220 701
CRC: 0 134
ES: 0 113
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Total time = 1 days 18 hours 18 min 2 sec
FEC: 7982827 21878
CRC: 572 354
ES: 11 296
SES: 11 1
UAS: 225 214
LOS: 1 0
LOF: 8 0
LOM: 0 0
====================================================================================
The stats have looked like this since the 25th, with the only difference being that the CRC errors and errors seconds cleared up completely after the work on the 30th. The interleaving never backed off after the work. I've attached the GEA test in a PDF below.
PN has said that GEA is reporting a sync speed of 64.1 and therefore, my profile isn't banded. But my VGM8324 is showing 66.9? They're adamant that this shows the profile band isn't impacting speed.
Secondly I'm curious as to why my line wasn't reset after the work was done?
I'm not really too knowledgeable about the intricacies of FTTC, I'm just trying to get PN to reset our line to see what it can do!
Edit: PN thread is here
https://community.plus.net/t5/Fibre-Broadband/Could-my-speed-be-better/td-p/1388990