Post your FTTC line stats & unlocking info

OllieD said:
I ran the BT Speed Test which states that I now have an IP profile 56.46Mbps. Upstream rate IP profile is 20Mbps. Actual DL speed achieved during the test was 50Mbps and UL speed was 13.84Mbps. Using Speedtest.net to the Manchester server, my actual DL speed was now 54.51Mbps and UL was 14.29Mbps.
Click to expand...

Well, your IP Profile now more or less matches the 96.79% of sync speed.
Did you restart the modem, or has the connection re-synced itself?

Code: 
# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max:    Upstream rate = 14616 Kbps, Downstream rate = 48908 Kbps
Path:   0, Upstream rate = 15963 Kbps, Downstream rate = 58324 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (868,1207) (1972,2783) 
DS: (32,859) (1216,1963) (2792,3939) 
Medley Phase (Final) Band Plan
US: (0,95) (868,1207) (1972,2783) 
DS: (32,859) (1216,1963) (2792,3939) 
       VDSL Port Details       Upstream        Downstream
Attainable Net Data Rate:      14616 kbps         48908 kbps
Actual Aggregate Tx Power:        6.8 dBm          13.4 dBm
============================================================================
  VDSL Band Status        U0      U1      U2      U3      D1      D2      D3
  Line Attenuation(dB):  5.4     28.1    42.1     N/A    14.2    34.7    53.6
Signal Attenuation(dB):  8.1     27.2    41.3     N/A    14.2    34.7    53.6
        SNR Margin(dB):  5.1     5.1     5.0      N/A    3.0     3.1     3.3
         TX Power(dBm): -4.1    -17.0    6.4      N/A    10.8    7.8     5.9


Strangely, my sync rate is yet again higher than my attainable rate. Is this likely due to my DL SNR now being 3.2 (see below)?

Code: 
# xdslcmd info --show    
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max:    Upstream rate = 14623 Kbps, Downstream rate = 48904 Kbps
Path:   0, Upstream rate = 15963 Kbps, Downstream rate = 58324 Kbps

Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        3.2             5.1
Attn(dB):        0.0             0.0
Pwr(dBm):        13.4            6.8
                        VDSL2 framing
                        Path 0
B:              239             223
M:              1               1
T:              64              64
R:              0               16
S:              0.1310          0.4464
L:              14661           4301
D:              1               1
I:              240             120
N:              240             240
                        Counters
                        Path 0
OHF:            1217692         358935
OHFErr:         1390            2
RS:             0               1489867
RSCorr:         0               18
RSUnCorr:       0               0

                        Path 0
HEC:            122             0
OCD:            0               0
LCD:            0               0
Total Cells:    287203237               0
Data Cells:     8350949         0
Drop Cells:     0
Bit Errors:     0               0

ES:             72              2
SES:            2               0
UAS:            16              16
AS:             2564

                        Path 0
INP:            0.00            0.00
PER:            2.09            7.14
delay:          0.00            0.00
OR:             91.63           31.36

Bitswap:        622             283

I still believe that I have an exceptionally noisy line that is affected by any additional interference.
Click to expand...

I would say the low attainable rate is definitely down to the low SNRM.

What was SNRM reported as immediately after obtaining the 58324 Kbps sync speed?

For your connection, Interleaving is off for both DS & US (D: 1 1)
Inpulse Noise Protection is not applied (INP: 0.00 0.00)
& Delay is off (delay: 0.00 0.00)

This suggests that DLM does not see your connection as particularly noisy, or suffering from interference.

Although, it appears the current connection had been up for only 43 minutes or so (AS: 2564) at the time you grabbed the stats.



Have you tried out the Windows graphing scripts that will convert all the data into a visualisation of your connection?

Snapshot graphs:-

line_stats-P-20120314-2244.png


Ongoing graphs:-

line_stats_P-20120315-1527.png
 
I think I got a bit ahead of myself. The line soon reverted back to the previous level (i.e. approx 45Mbps DL and 13Mbps UL).

Code: 
# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2
Max:    Upstream rate = 14772 Kbps, Downstream rate = 49304 Kbps
Path:   0, Upstream rate = 14683 Kbps, Downstream rate = 48937 Kbps

Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        6.1             6.1
Attn(dB):        0.0             0.0
Pwr(dBm):        13.3            6.8
                        VDSL2 framing
                        Path 0
B:              239             223
M:              1               1
T:              64              64
R:              0               16
S:              0.1561          0.4852
L:              12302           3957
D:              1               1
I:              240             120
N:              240             240
                        Counters
                        Path 0
OHF:            9712501         975562
OHFErr:         367             8
RS:             0               3142454
RSCorr:         0               1171
RSUnCorr:       0               0

                        Path 0
HEC:            1348            0
OCD:            0               0
LCD:            0               0
Total Cells:    2286330983              0
Data Cells:     47498903                0
Drop Cells:     0
Bit Errors:     0               0

ES:             425             10
SES:            26              0
UAS:            36              36
AS:             24350

                        Path 0
INP:            0.00            0.00
PER:            2.49            7.76
delay:          0.00            0.00
OR:             80.09           31.94

Bitswap:        5249            3271
 
Anyone here care to explain something to me?

I notice that (as far as i can se from other stats this is) that i'm the only one with a minus figure for 'Pwr (dBm)' - Upload.

Any ideas what or why this is? Should i be concerned?

Ta


Code: 
# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max:    Upstream rate = 32937 Kbps, Downstream rate = 90168 Kbps
Path:   0, Upstream rate = 20000 Kbps, Downstream rate = 79999 Kbps

Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        8.8             15.1
Attn(dB):        0.0             0.0
Pwr(dBm):        13.3           -4.6

Code: 
# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max:    Upstream rate = 32921 Kbps, Downstream rate = 90168 Kbps
Path:   0, Upstream rate = 20000 Kbps, Downstream rate = 79999 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
Medley Phase (Final) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939)
       VDSL Port Details       Upstream        Downstream
Attainable Net Data Rate:      32921 kbps         90168 kbps
Actual Aggregate Tx Power:    -   4.6 dBm          13.3 dBm
 
V_R said:
Anyone here care to explain something to me?

I notice that (as far as i can se from other stats this is) that i'm the only one with a minus figure for 'Pwr (dBm)' - Upload.

Any ideas what or why this is? Should i be concerned?
Click to expand...


Here's another one.
This is from a super stable connection with DS Attainable Rate of almost 104Mb & US attainable of 37Mb, so probably no cause for concern.


40Mb_Sync_power.png


Code: 
Max:	Upstream rate = 36918 Kbps, Downstream rate = 103976 Kbps
Path:	0, Upstream rate = 10000 Kbps, Downstream rate = 39998 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (868,1207) (1972,2783) 
DS: (32,859) (1216,1963) (2792,3939) 
Medley Phase (Final) Band Plan
US: (0,95) (868,1207) (1972,2783) 
DS: (32,859) (1216,1963) (2792,3939) 
       VDSL Port Details       Upstream        Downstream
Attainable Net Data Rate:      36918 kbps        103976 kbps
Actual Aggregate Tx Power:    -   4.9 dBm          13.6 dBm
============================================================================
  VDSL Band Status        U0      U1      U2      U3      D1      D2      D3
  Line Attenuation(dB):	 2.1	 10.1	 13.5	  N/A	 5.9	 12.7	 19.2	
Signal Attenuation(dB):	 0.0	  N/A	 11.5	  N/A	 5.9	 12.7	 19.2	
        SNR Margin(dB):	 31.0	  N/A	 31.0	  N/A	 24.0	 23.9	 24.2	
         TX Power(dBm):	-20.2	-128.0	-5.9	  N/A	 10.8	 7.9	 6.9
 
Last edited:
Ah far enough then, Looks like no course for concern. Its certainly not having an impact on the lines performance. Thanks Bald_Eagle1! :)
 
Can anyone tell me why my SNR margin has gone from 6 to 14? In a result my sync rate has decreased dramatically! Here are some stats.

Attainable rate (kbit/s) 40132 6378
SNR margin (dB) 14 15.3
Line attenuation (dB) 0 0
Output power (dBmV) 9.9 4.3

Line rate (kbit/s) 17998 2000 0 0
CRC errors 0 0 0 0
FEC errors 0 0 0 0
HEC errors 0 0 0 0

Thanks
 
A quick question for Bald Eagle1 too, My isp is TalkTalk, Am I ok to use a Netgear wnr2000 as my router? They are telling me I have to use the supplied router even though the Netgear works.
 
Unless they are doing some crazy MAC based authentication with the modem you should be able to use that, presuming Talk Talk give you a modem and router rather than some all in one solutions although Ive not heard anything like that.

However might be worth noting that if you have a 80/20 profile you might be somewhat limited in speed with the netgear, not sure what its throughput is like but I only use mine for wireless due to the 100mb ports and the way my network is means I need gigabit at the modem.
 
JoshShep said:
A quick question for Bald Eagle1 too, My isp is TalkTalk, Am I ok to use a Netgear wnr2000 as my router? They are telling me I have to use the supplied router even though the Netgear works.
Click to expand...


I see some others have answered.

I have been very busy over the last few days/nights, so apologies for not responding.
I don't know anyway why TalkTalk insist you use the supplied modem, other than it is part of "their" known & tested setup.

I use a Netgear WNR1000 v 3 as supplied by my ISP (Plusnet) & it seems O.K. (for the sync speeds I achieve with the HG612 modem).
 
Router Fan said:
Can these scripts be made to work with other routers?
Click to expand...

The scripts work with & obtain the data from the HG612 modem.

The router is just a "pass-through" so that the internet via modem's LAN1 port (as installed) & the modem's statistics via the modem's LAN2 port can be accessed at the same time.

As far as I am aware, the make/type of router should not make any difference, although one user is struggling to use the HH3 to get to the modem's stats.
Apparently, he can obtain the stats wirelessly using the HH3, but not via ethernet.



Any HH3 users out there able to offer any setting up advice that I can pass on?
 
JoshShep said:
Can anyone tell me why my SNR margin has gone from 6 to 14? In a result my sync rate has decreased dramatically! Here are some stats.

Attainable rate (kbit/s) 40132 6378
SNR margin (dB) 14 15.3
Line attenuation (dB) 0 0
Output power (dBmV) 9.9 4.3

Line rate (kbit/s) 17998 2000 0 0
CRC errors 0 0 0 0
FEC errors 0 0 0 0
HEC errors 0 0 0 0

Thanks
Click to expand...


As I understand it with FTTC, a high SNRM suggests that a connection could achieve a much higher rate than the current sync speed.
(as shown by your attainable rate of 40Mb, against your sync speed of only 18Mb.

The question has to be why is your sync speed so low.

Are you rebooting the HG612 modem a lot?
Your sync speeds, attainable rates & IP Profiles seem to be all over the place from a few of your posts that I have read.

Many disconnections and/or high error counts and/or high ES (Error Seconds) and/or high SES (Serious Error Seconds)can cause DLM to sync a connection at a low speed as it probably thinks the connection is very unstable at higher speeds & lowers sync speed to improve stability.

On my own "dodgy" connection, I went through a few months of the modem regularly re-syncing "on the fly", sometimes as low as 8Mb.

After numerous engineer visits, that now seems to be more or less sorted, but currently I can only achieve a sync speed of around 30Mb, but at least it now stays connected for a few days at a time.

I see all your error counts are zero.
Had the modem only just been connected when you grabbed the stats?

Does your modem report many re-syncs in its own built in logs that can be viewd from the modem's GUI?

These are my last couple of "on the fly" re-syncs:-

Code: 
2012-3-12 4:28:37 Notice 104500 DSL activate succeed
2012-3-12 4:28:20 Notice 104500 DSL deactivate
2012-3-11 22:49:54 Notice 0 admin login
2012-3-11 20:34:11 Notice 104500 DSL activate succeed
2012-3-11 20:33:55 Notice 104500 DSL deactivate


EDIT:

I see your DS power level is quite low too.
That might be a result of a low sync speed, or it might be what causes the low sync speeds.
I am currently trying to work out the relationship between power levels & sync speeds.
 
Last edited:
Bald_Eagle1 said:
As I understand it with FTTC, a high SNRM suggests that a connection could achieve a much higher rate than the current sync speed.
(as shown by your attainable rate of 40Mb, against your sync speed of only 18Mb.

The question has to be why is your sync speed so low.

Are you rebooting the HG612 modem a lot?
Your sync speeds, attainable rates & IP Profiles seem to be all over the place from a few of your posts that I have read.

Many disconnections and/or high error counts and/or high ES (Error Seconds) and/or high SES (Serious Error Seconds)can cause DLM to sync a connection at a low speed as it probably thinks the connection is very unstable at higher speeds & lowers sync speed to improve stability.

On my own "dodgy" connection, I went through a few months of the modem regularly re-syncing "on the fly", sometimes as low as 8Mb.

After numerous engineer visits, that now seems to be more or less sorted, but currently I can only achieve a sync speed of around 30Mb, but at least it now stays connected for a few days at a time.

I see all your error counts are zero.
Had the modem only just been connected when you grabbed the stats?

Does your modem report many re-syncs in its own built in logs that can be viewd from the modem's GUI?

These are my last couple of "on the fly" re-syncs:-

Code: 
2012-3-12 4:28:37 Notice 104500 DSL activate succeed
2012-3-12 4:28:20 Notice 104500 DSL deactivate
2012-3-11 22:49:54 Notice 0 admin login
2012-3-11 20:34:11 Notice 104500 DSL activate succeed
2012-3-11 20:33:55 Notice 104500 DSL deactivate


EDIT:

I see your DS power level is quite low too.
That might be a result of a low sync speed, or it might be what causes the low sync speeds.
I am currently trying to work out the relationship between power levels & sync speeds.
Click to expand...

Thanks for the help mate, I was supplied with an ECI modem and primarily use that, Only when I'm getting line stats I use the HG612. I'm only doing 1-2 re sync's per week so I can't see this being an issue. So yes the errors are low because of this, is there anyway to improve DS power level? Thanks again!
 
JoshShep said:
Thanks for the help mate, I was supplied with an ECI modem and primarily use that, Only when I'm getting line stats I use the HG612. I'm only doing 1-2 re sync's per week so I can't see this being an issue. So yes the errors are low because of this, is there anyway to improve DS power level? Thanks again!
Click to expand...


I'm not yet sure how it works.

At first I thought that DS Output Power was the result of sync speeds i.e. high speed = high power levels.

It could be that the output power dictates the sync speeds????

Here's an example of a very slow FTTC connection (only 16Mb sync & 19Mb attainable), a long way from the cabinet (1600m or so), yet both DS & US Output Power levels for this connection are higher than shown in your latest stats:-

Code: 
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:	0
Max:	Upstream rate = 2475 Kbps, Downstream rate = 19136 Kbps
Path:	0, Upstream rate = 1999 Kbps, Downstream rate = 16218 Kbps

Link Power State:	L0
Mode:			VDSL2 Annex B
VDSL2 Profile:		Profile 17a
TPS-TC:			PTM Mode
Trellis:		U:ON /D:ON
Line Status:		No Defect
Training Status:	Showtime
		Down		Up
SNR (dB):	 6.3		 7.7
Attn(dB):	 0.0		 0.0
Pwr(dBm):	 11.0		 5.6
 
JoshShep said:
I'm due to be put on 80/20 on Wed, So I will report back then if there are any improvements. Hopefully my SNR will return to 6 again giving me higher speeds.
Click to expand...


Mine's due tomorrow.

However, with only 30Mb sync speed & up to 36Mb attainable, I'm not really expecting much change on my own connection (unless opening the frequencies up to 80/20 will be able to increase power etc. & let my connection achieve a higher sync speed by improved bit-loading distribution).
 
Bald_Eagle1 said:
I'm not yet sure how it works.

At first I thought that DS Output Power was the result of sync speeds i.e. high speed = high power levels.

It could be that the output power dictates the sync speeds????

Here's an example of a very slow FTTC connection (only 16Mb sync & 19Mb attainable), a long way from the cabinet (1600m or so), yet both DS & US Output Power levels for this connection are higher than shown in your latest stats:-

Code: 
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:	0
Max:	Upstream rate = 2475 Kbps, Downstream rate = 19136 Kbps
Path:	0, Upstream rate = 1999 Kbps, Downstream rate = 16218 Kbps

Link Power State:	L0
Mode:			VDSL2 Annex B
VDSL2 Profile:		Profile 17a
TPS-TC:			PTM Mode
Trellis:		U:ON /D:ON
Line Status:		No Defect
Training Status:	Showtime
		Down		Up
SNR (dB):	 6.3		 7.7
Attn(dB):	 0.0		 0.0
Pwr(dBm):	 11.0		 5.6
Click to expand...

Possibly, But I think the sync speed has more to do with the SNR margin, mine being at 15 would explain why I'm syncing so low. But it's a big learning curve for me, ADSL so much easier to understand!
 
Bald_Eagle1 said:
Mine's due tomorrow.

However, with only 30Mb sync speed & up to 36Mb attainable, I'm not really expecting much change on my own connection (unless opening the frequencies up to 80/20 will be able to increase power etc. & let my connection achieve a higher sync speed by improved bit-loading distribution).
Click to expand...

I'll be looking forward to see your results, I have been people in the Plus net fourms with sync speeds of around 32 meg see an increase of almost 50% so hopefully you and I will see the same results. Good luck! :)
 
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