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[flood]

Not sure whether I'm banded/capped, but I feel my like line should be good enough to get past 53Mb. The only thing I can think of is an "impacted line" (whatever that entails). According to the dslchecker: Clean = ds66/45 us17/11 | Impacted = ds55/35 us14/8

Stats:

Code: [Select]

xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 1
Last initialization procedure status: 0
Max: Upstream rate = 9773 Kbps, Downstream rate = 52620 Kbps
Bearer: 0, Upstream rate = 9773 Kbps, Downstream rate = 53073 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 3.3 6.1
Attn(dB): 18.6 0.0
Pwr(dBm): 13.9 7.4
VDSL2 framing
Bearer 0
MSGc: -6 26
B: 227 237
M: 1 1
T: 0 34
R: 12 16
S: 0.1366 0.7732
L: 14052 2628
D: 4 1
I: 240 127
N: 240 254
Q: 4 0
V: 0 0
RxQueue: 128 0
TxQueue: 32 0
G.INP Framing: 18 0
G.INP lookback: 31 0
RRC bits: 0 24
Bearer 1
MSGc: 122 -6
B: 0 0
M: 2 0
T: 2 0
R: 16 0
S: 8.0000 0.0000
L: 32 0
D: 1 0
I: 32 0
N: 32 0
Q: 0 0
V: 0 0
RxQueue: 0 0
TxQueue: 0 0
G.INP Framing: 0 0
G.INP lookback: 0 0
RRC bits: 0 0
Counters
Bearer 0
OHF: 0 2309938
OHFErr: 0 18
RS: 1039937380 1503277
RSCorr: 465625 97
RSUnCorr: 0 0
Bearer 1
OHF: 11389696 0
OHFErr: 0 0
RS: 91117073 0
RSCorr: 64 0
RSUnCorr: 0 0

Retransmit Counters
rtx_tx: 297211 0
rtx_c: 2805 0
rtx_uc: 69054 0

G.INP Counters
LEFTRS: 11 0
minEFTR: 53060 0
errFreeBits: 241898437 0

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 1492338255 0
Data Cells: 289114379 0
Drop Cells: 0
Bit Errors: 0 0

Bearer 1
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 0 0
Data Cells: 0 0
Drop Cells: 0
Bit Errors: 0 0

ES: 11 41
SES: 11 0
UAS: 58 47
AS: 182951

Bearer 0
INP: 51.00 0.00
INPRein: 1.00 0.00
delay: 0 0
PER: 0.00 6.59
OR: 0.01 38.79
AgR: 53189.82 9811.50

Bearer 1
INP: 2.00 0.00
INPRein: 2.00 0.00
delay: 0 0
PER: 16.06 0.01
OR: 63.75 0.01
AgR: 63.75 0.01

Bitswap: 73127/73127 1565/1565

Total time = 1 days 19 hours 59 min 24 sec
FEC: 481402 156
CRC: 591 41
ES: 11 41
SES: 11 0
UAS: 58 47
LOS: 1 0
LOF: 10 0
LOM: 0 0
Latest 15 minutes time = 14 min 24 sec
FEC: 243 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: 280 0
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 = 19 hours 59 min 24 sec
FEC: 194932 38
CRC: 0 7
ES: 0 7
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 231565 50
CRC: 0 10
ES: 0 9
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 2 days 2 hours 49 min 9 sec
FEC: 465625 97
CRC: 0 18
ES: 0 17
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
#
Any help appreciated.

[johnson]

Well it appears you have 3db downstream target and G.INP, so probably at the best your line can do. Sync speed isnt a round or just below number (eg 52999) so I don't think you are banded.

Impacted refers to the effect of crosstalk due to other users, to look at that we need your quiet line noise graph.

Has the line performed differently in the past? Crosstalk gets worst the more users on your cab/in your bundle so naturally gets worse overtime until the cab is at capacity.

You have low error counts, so outside of a noise event thats gone now another reason not to assume banding or other DLM intervention.

Things you can do to improve speed are probably limited to having the shortest distance from your phone socket to the modem, removing any unused extension wiring, try another modem etc.

[flood]

Here's my QLN & HLOG.

Sadly, this is the highest my line has ever been after being on infinity since 2011. I've just never been bothered to unlock my modem and get my stats until recently so I have no idea how much my line has changed over the years, apart from periodic speedtests.

[johnson]

Probably best to wait for someone more experienced at reading the runes of a QLN graph than me, but as I understand it noticeable indications of crosstalkers would be spikes, which yours seems free from.

How about your internal wiring, filters, modem etc? I assume HG612 given you mention unlocking? Given the likelihood of a huawei cab as you have G.INP its possible a new modem could get you a few more mbits.

[Weaver]

Welcome, Flood, btw!

[j0hn]

DLM has your line running on the best possible profile, 3dB and retransmission.

I can't see you squeezing any more out from looking at your stats.

Can you describe your setup? What master socket/faceplate are you using and do you have any extensions connected?

You could try connecting to the master sockets test socket. If you see a considerable improvement then your extension wiring could be causing issues.
If no improvement from the test socket then you're getting the best you're going to get.

[flood]

I only have a master socket , so I can rule out extensions. An engineer cut off all power to the extensions because we don't use them.
Using the fttc faceplate with dsl on top, phone on bottom.

How would I test the connection via the test socket? Should I just record the stats? Also, will taking off the faceplate cause any errors? I don't want DLM to burn me.

Appreciate you guys for helping me explore all options.

[j0hn]

If you definitely have no extensions then using the test socket won't help.
It bypasses internal wiring/extensions to see if they are the problem.

DLM has nothing to give and your internal wiring is as good as can be.

[flood]

If you definitely have no extensions then using the test socket won't help.
It bypasses internal wiring/extensions to see if they are the problem.

DLM has nothing to give and your internal wiring is as good as can be.

Okay, one last thing before I give up and accept defeat. Is there any chance DLM will ever put on me retranmission low? I really hate how my IP Profile is only 91% of the speed. I need all the throughput I can get 

[j0hn]

I've only once seen retransmission low on a 3dB SNRM target.
That was only shown via pictures of OpenReach line profile changes from 1 of the engineers who posts on here.
He was using a BT HomeHub 5A I believe.

Just checked, it was indeed a HH5A

https://forum.kitz.co.uk/index.php/topic,20102.msg352352.html#msg352352

Certainly any Broadcom stats I've ever looked at with a 3dB SNRM target have always been retransmission high.

It is entirely possible that Broadcom chipsets always move to retransmission high when the SNRM target is lowered.

Unfortunately it is impossible to tell from the HH5A stats if a line is retx low or high so the example posted above remains the only time I've ever seen retx low @ 3dB.

[flood]

Thank you all for the help, definitely answered all my questions. I guess now I've just got to wait for G.Fast to become available if I want better speeds. My town is currently one of the chosen selected so should be here by the end of the year I hope.

[burakkucat]

Here's my QLN & HLOG.

Both "read" as acceptable. Not perfect . . . as nothing ever is so.

From the big notch in the DS1 band of the QLN plot, I deduce that the cabinet is a fair distance away from the serving telephony exchange. I.e. a longish E-side. The QLN plot does not show any significant "flying gulls" (or "pigeons"), so I doubt that there is any significant cross-talk affecting your circuit.

The Hlog plot has a quite reasonable shape and from its rate of decay with increasing frequency I predict that your circuit's D-side is a little over the average length when compared with its peers. 

[flood]

Both "read" as acceptable. Not perfect . . . as nothing ever is so.

From the big notch in the DS1 band of the QLN plot, I deduce that the cabinet is a fair distance away from the serving telephony exchange. I.e. a longish E-side. The QLN plot does not show any significant "flying gulls" (or "pigeons"), so I doubt that there is any significant cross-talk affecting your circuit.

The Hlog plot has a quite reasonable shape and from its rate of decay with increasing frequency I predict that your circuit's D-side is a little over the average length when compared with its peers.

Your assumptions are correct. My telephone exchange is at least 4km away, my max speed on ADSL is a whopping 1Mb.

[burakkucat]

Your assumptions are correct. My telephone exchange is at least 4km away, my max speed on ADSL is a whopping 1Mb.

b*cat performs one of his best Japanese-style bows. 

As a Profile 17a G.993.2 service has a total of 4096 sub-carriers, you might like to adjust the width of the QLN, Hlog & Bit Loading plots . . . Use the "Change Tone Range" button below each of those plots, select "Custom" and manipulate the slider appropriately.

[boost]

rtx_uc:      69054

Might be worth considering?