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 1 
 on: December 16, 2018, 11:52:50 PM 
Started by xreyuk - Last post by burakkucat
21.9dBm is the attenuation.

Huh?  ???  Something expressed as decibels relative to one milliwatt is the power. I suspect that there was "eye-on-line slippage" when initially reading the values.

            Down      Up
SNR (dB):    3.3      6.5
Attn(dB):   21.9      0.0
Pwr(dBm):   12.8      6.7

Considering those three lines it looks, to me, as if the value on the second line was taken as the value of the first line with the units of the third line!

 2 
 on: December 16, 2018, 11:51:33 PM 
Started by pooclah - Last post by kitz
The call wait times are dreadful.  They've been promising for years it would get better, but it never has.   Agree it depends on what time of day you call.


Although saying that I was shocked a while ago whilst ringing up for someone else at about 2pm ish. I'd said to them, it may be a while before I get through and carried on having a convo with the person whose line it was.   Only to be totally surprised when the call was answered within a couple of mins.  Typical - make me out to be liar  :lol: :lol: 

 3 
 on: December 16, 2018, 11:46:06 PM 
Started by MultumInParvo - Last post by kitz
I'm on an ECI cab, yet all the BCM chips mentioned out-perform the Lantiq VRX-268 based modems.

I don't have an unlocked ECI modem though to have been able to have done a true comparison for the short time we had g.inp.    But as it stands right now with no sign of g.inp, then the Zyxel VMGxxxx-B10A's are my best bet as they sync higher and show less errors.

 4 
 on: December 16, 2018, 11:30:55 PM 
Started by xreyuk - Last post by kitz
Quote
at an SNR on the downstream of 21.9dBm, with speeds of 41Mbps.

21.9dBm is the attenuation. 

I note one of your recent sync's shows SNR (dB):   3.3   which indicates that DLM could have moved you to Target SNRM of 3dB.  This would account for the jump to 55Mbps.

The alternative is you are still on a Target 6dB but one of your crosstalkers could have been offline when you did a resync.  If all lines on the DSLAM are forced to resync it's not uncommon if your modem comes up before theirs to get a speed boost, but the SNRM will shoot back down when they come online.
If I sync before my neighbour then I get a speed boost of circa 12Mbps, but as soon as their modem syncs then my SNRM drops to 3.2dB.

 5 
 on: December 16, 2018, 11:22:15 PM 
Started by MultumInParvo - Last post by Ixel
As you're on a Huawei DSLAM, lucky you :P, I agree with the suggestions here regarding going for a Broadcom chipset such as the mentioned VMG models. If you were on an ECI DSLAM then I would've advised Lantiq first, or Broadcom second.

 6 
 on: December 16, 2018, 11:15:24 PM 
Started by xreyuk - Last post by xreyuk
These are the stats after doing a reboot this evening, I can update these after around 24 hours to see how things are going if that's a good idea? As you can see, sync speed jumped massively.

Code: [Select]
# xdslcmd info --show

xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 10819 Kbps, Downstream rate = 55168 Kbps
Bearer: 0, Upstream rate = 10819 Kbps, Downstream rate = 55378 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 6.5
Attn(dB): 21.9 0.0
Pwr(dBm): 12.8 6.7
VDSL2 framing
Bearer 0
MSGc: -6 26
B: 227 237
M: 1 1
T: 0 48
R: 10 16
S: 0.1309 0.6992
L: 14540 2906
D: 4 1
I: 238 127
N: 238 254
Q: 4 0
V: 0 0
RxQueue: 135 0
TxQueue: 27 0
G.INP Framing: 18 0
G.INP lookback: 27 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 19671
OHFErr: 0 0
RS: 4990084 944114
RSCorr: 37862 0
RSUnCorr: 0 0
Bearer 1
OHF: 10272 0
OHFErr: 0 0
RS: 81680 0
RSCorr: 0 0
RSUnCorr: 0 0

Retransmit Counters
rtx_tx: 216107941 0
rtx_c: 745 0
rtx_uc: 136 0

G.INP Counters
LEFTRS: 0 0
minEFTR: 55353 0
errFreeBits: 139236 0

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 17531469 0
Data Cells: 26503 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: 0 0
SES: 0 0
UAS: 26 26
AS: 165

Bearer 0
INP: 56.00 0.00
INPRein: 1.00 0.00
delay: 0 0
PER: 0.00 8.42
OR: 0.01 30.39
AgR: 55499.50 10849.39

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: 120/120 6/6

#

 7 
 on: December 16, 2018, 10:52:30 PM 
Started by xreyuk - Last post by xreyuk
Hi all,

Thanks for the replies.

I hadn't done the quiet line test, so did one today and it reveals faint buzzing and popping noises.

What other causes than the DLM could be causing the 22dBm SNR?

I am not using the plusnet hub, I am still connected using an unlocked Huawei HG612. Here are the current line stats. As for cabinet, I am connected to a Huawei cab. Plusnet have said that I am not banded.

Code: [Select]
# xdslcmd info --show

xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 1
Last initialization procedure status: 0
Max: Upstream rate = 10800 Kbps, Downstream rate = 51480 Kbps
Bearer: 0, Upstream rate = 10800 Kbps, Downstream rate = 41031 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): 8.0 6.5
Attn(dB): 21.9 0.0
Pwr(dBm): 12.0 6.6
VDSL2 framing
Bearer 0
MSGc: -6 26
B: 227 237
M: 1 1
T: 0 48
R: 10 16
S: 0.1767 0.7004
L: 10773 2901
D: 4 1
I: 238 127
N: 238 254
Q: 4 0
V: 0 0
RxQueue: 100 0
TxQueue: 20 0
G.INP Framing: 18 0
G.INP lookback: 20 0
RRC bits: 0 24
Bearer 1
MSGc: 90 -6
B: 0 0
M: 2 0
T: 2 0
R: 16 0
S: 10.6667 0.0000
L: 24 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 212441
OHFErr: 677 18
RS: 1931391808 3850590
RSCorr: 252967 184
RSUnCorr: 0 0
Bearer 1
OHF: 5333665 0
OHFErr: 0 0
RS: 32001619 0
RSCorr: 4 0
RSUnCorr: 0 0

Retransmit Counters
rtx_tx: 216107069 0
rtx_c: 4061965 0
rtx_uc: 370050 0

G.INP Counters
LEFTRS: 967 0
minEFTR: 41027 0
errFreeBits: 701718282 0

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 2463921243 0
Data Cells: 43592669 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: 150 53
SES: 62 0
UAS: 128 77
AS: 85673

Bearer 0
INP: 55.00 0.00
INPRein: 1.00 0.00
delay: 0 0
PER: 0.00 8.43
OR: 0.01 30.33
AgR: 41120.78 10830.73

Bearer 1
INP: 2.50 0.00
INPRein: 2.50 0.00
delay: 0 0
PER: 16.06 0.01
OR: 47.81 0.01
AgR: 47.81 0.01

Bitswap: 58220/58220 1383/1383

*edit*

Looking at these stats it appears I'm connected with an SNR margin of 8 (which is still high) however, it appears the numbers may have been showing in the incorrect places on the GUI. So don't I feel like a tool.

However, the main issue is that I've been having problems with gaming and some streaming, and by the looks of it I'm running errors on my line. Couple that with the noisy quiet line test, could there be a fault on my line?

 8 
 on: December 16, 2018, 09:47:29 PM 
Started by mentaltom - Last post by meritez
TalkTalk Business offer something called EoFTTC, ethernet over fibre to the cabinet, it's still FTTC but higher SLA and the phone line can not be used for calls as there is no phone number attached to it, which technically makes it Naked VDSL.

 9 
 on: December 16, 2018, 09:12:58 PM 
Started by Weaver - Last post by Weaver
If found this, Apple’s solution : https://en.m.wikipedia.org/wiki/UDID

 10 
 on: December 16, 2018, 07:37:24 PM 
Started by MultumInParvo - Last post by MultumInParvo
How are you finding the VMG1312-B10A for £35ish currently? Historically, it has been possible to find on the rare occasion for this price or below.
Just looking at a very rough average of the last 7 sold on ebay, no arithmetic, just a builders estimate, so don't quote me...


@J0hn - the 3926 rarely seems to come up on ebay, last one was in Helsinki back in 2015 according to Google!

I think I'll take your advice and get the HG612 first and see what the numbers tell me, or at least tell you guys so I can learn from you what they all mean, it will remain a very handy backup if I do upgrade.

Many thanks for the input all, I look forward to reporting back on my findings when the modem arrives.

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