Post your FTTC line stats & unlocking info

Locky · 2 Mar 2013 at 20:32

I would say you are more like 500 meters looking at the stats.

might be due to crosstalk etc for the speed drop.

Locky · 2 Mar 2013 at 20:37

Code:

# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:	0
Max:	Upstream rate = 21778 Kbps, Downstream rate = 71280 Kbps
Path:	0, Upstream rate = 20000 Kbps, Downstream rate = 71642 Kbps

Discovery Phase (Initial) Band Plan
US: (0,95) (880,1195) (1984,2771) 
DS: (32,859) (1216,1959) (2792,4083) 
Medley Phase (Final) Band Plan
US: (0,95) (880,1195) (1984,2771) 
DS: (32,859) (1216,1959) (2792,4083) 
       VDSL Port Details       Upstream        Downstream
Attainable Net Data Rate:      21778 kbps         71280 kbps
Actual Aggregate Tx Power:        6.5 dBm          12.4 dBm
============================================================================
  VDSL Band Status        U0      U1      U2      U3      D1      D2      D3
  Line Attenuation(dB):	 0.7	 28.7	 44.0	  N/A	 14.3	 37.1	 58.1	
Signal Attenuation(dB):	 0.7	 28.5	 43.9	  N/A	 14.3	 37.1	 58.1	
        SNR Margin(dB):	 6.0	 6.0	 6.5	  N/A	 6.5	 6.1	 5.9	
         TX Power(dBm):	-5.2	-16.3	 6.2	  N/A	 9.5	 7.8	 4.4

Code:

# xdslcmd info --show    
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:	0
Max:	Upstream rate = 21733 Kbps, Downstream rate = 71280 Kbps
Path:	0, Upstream rate = 20000 Kbps, Downstream rate = 71642 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):	 6.2		 6.3
Attn(dB):	 0.0		 0.0
Pwr(dBm):	 12.5		 6.5
			VDSL2 framing
			Path 0
B:		239		236
M:		1		1
T:		21		5
R:		0		16
S:		0.1066		0.3771
L:		18009		5410
D:		1		1
I:		240		255
N:		240		255
			Counters
			Path 0
OHF:		11866741		526990
OHFErr:		6952		26
RS:		0		1740008
RSCorr:		0		263
RSUnCorr:	0		0

			Path 0
HEC:		14178		0
OCD:		0		0
LCD:		0		0
Total Cells:	2754776663		0
Data Cells:	44950767		0
Drop Cells:	0
Bit Errors:	0		0

ES:		617		24
SES:		8		0
UAS:		71		71
AS:		20005

			Path 0
INP:		0.00		0.00
PER:		1.67		6.12
delay:		0.00		0.00
OR:		114.34		203.67

Bitswap:	6538		147

#

Just a bit of a bump, as the thread seems to have gone quiet. When the engineer came to install everything I'd already unlocked an Echolife modem using the help in this thread, so he gave me a spare :cool:

Can anyone tell me anything about my stats, that's not already obvious? I.e. I'm at the sync limit at what the line can achieve.

Here is a route map from our house to the FTTC cabinet, http://goo.gl/maps/YMu5d although I would trim 100-150m off for the roundabout so I would say we're closer to 650m from the cab.

I trimmed off the roundabout and coverted to KM and it comes out @ 1.1km, looking at your line attenuation etc you don't have a 1.1km line, so I doubt the line would take the route you show.

https://maps.google.co.uk/maps?sadd...=w&doflg=ptk&mra=dvme&mrsp=1&sz=18&via=1&z=17 Trimmed roundabout

I would say your line takes this route, it may even cross the road and go up that footpath. https://maps.google.co.uk/maps?sadd...w&doflg=ptk&mra=dpe&mrsp=1&sz=18&via=1,2&z=19

Locky · 3 Mar 2013 at 00:51

KIA said:
400m is more believable.

With his line attenuation I would say he's closer to 650m as he says, he must have a good quality line as he is pulling a nice speed over that attenuation.

Locky · 3 Mar 2013 at 09:34

EVH said:
Ok, just after a bit of advice really..

My connection lost sync this morning around 5am, and dropped down to a sync speed of 62564. I can now see that the max attainable is around 75380 with a downstream snr margin of 7.4dB

Is it worth rebooting the modem so that it establishes a higher sync?

I'm concious that DLM may kick in if I reset the modem just to try to attain a higher speed, and limit me to a long therm cap of 62000 if it believes that is more stable. Personally, I hate DLM but that's by the by

I've not had any drop outs at 75000 apart from when I've been tweaking the modem, so I'm confident it'll handle the higher sync speed.

Thoughts?

The resync would have been the DLM kicking in to re-porfile your line, the DLM usually changes the line between 5am to 6am.

It might not have changed it due to any line drops, but the error rate might have been high, keep an eye on the error rate.

when you want to tweak or change anything on the line or re-sync don't just turn it off and on, there is a reboot option in the modem under Maintenance > Device > Reset, this is better as the DLM won't see it as a dropped connection.

Locky · 7 Mar 2013 at 08:02

Very nice mate, works fine here, windows 8 64bit. I will kick things off.

FTTC been installed for 2 years nearly, cab pretty full, crosstalk chopped about 7mb attainable rate off over a period of 2 years isn't bad,

been at this speed for the past year now and unlikely to drop (unless faulty) line length is roughly 300 meters.

Uptime has been 2 weeks ish since I last rebooted the modem.

Locky · 7 Mar 2013 at 22:37

Bald_Eagle1 said:
Hi Locky & thanks for the feedback.

That's great to hear.
Neither Ronski (who created the settings editor) or I knew if it would work with Windows 8 as all our testing has been on XP, Vista & Windows 7.

Similar chopped off mine too, but 7Mb off my initial 33Mb isn't that great

How did you find the setting up process & have you started the Ongoing logging?

I haven't started the ongoing logging yet, I wish I did as something has chopped 2mb off my attainable rate for no reason, no new installs today as I can see the cab and been no BT about.

Locky · 8 Mar 2013 at 19:42

It's why the estimate is conservative, it's based on a full cab and reason why you get higher speed (usually) is the cab isn't full so there is less crosstalk.

I have found out what chopped a few MB off my line too, spoke to BT ELC (on good terms now) they have changed the algorithm in my cab which is meant to make lines more stable.

I have found I'm getting even less error seconds (not that I had many anyway) and bit's swap is different and shared tones have increased.

Locky · 13 Mar 2013 at 13:05

I would say looking at your attenuation your line is a bit longer than 200 meters.

Locky · 15 Mar 2013 at 18:13

This is my current stats (line been up for weeks), I not entirely sure how long my line length is. It can take 3 possible routes

1: roughly 290 meters
2: roughly 350 meters
4: roughly 400 meters

Locky · 16 Mar 2013 at 21:26

Logsi said:
How would one perform a soft reboot to avoid DLM?

log into the modem (if unlocked) and reboot it.

Locky · 6 Apr 2013 at 09:03

Tandy? are you serious?

thought they went bust on the 90's?

Which cable did you get?

Edit seems they live online now and used ADSLnation for their DSL products... not bad.

Locky · 6 Apr 2013 at 15:03

Mine too, had everything, Jamo speakers, CB radios, my fav shop of all.

Ive ordered a 0.5m high speed DSL cable, see how it goes, not really for speed, but for cable management.

Locky · 10 Apr 2013 at 13:01

The High speed DSL cable is here and it's added 1.5mb to my attainable rate, not bad really, I wasn't really bothered about the speed, just to tidy the install up and looks much - much neater.

For the price, I recommend it.

Locky · 10 Apr 2013 at 17:43

j_to_da_t said:
Thanks for the tip; I've just ordered one. It looks to be of much better quality than the ones that are bundled with modems.

Is there a preferred way to connect this new cable without it looking like a disconnection, and therefore possibly affecting the sync speed?

log into the modem - reboot it - before it starts back up (resyncs) - turn it off and install cable.

Locky · 11 Apr 2013 at 10:42

I just read up there is a newer driver version with better VDSL speed.

Locky · 11 Apr 2013 at 12:04

I just tried the new firmware and I lost speed.

Seems its better for people with longer D-sides (phone line)

Locky · 11 Apr 2013 at 19:28

Need some more people to test this and report.

the update is same method

Locky · 13 Apr 2013 at 20:02

Isn't too bad for a 600 to 700 meter D-side tbh.

Have you tried the latest firmware?

Locky · 13 Apr 2013 at 21:40

pyropetepete said:
How you getting measaurements?

Also can you link me to the latest and what does it offer?

it's a rough idea based on your attenuation and by no means accurate

http://huaweihg612hacking.wordpress.com/

https://docs.google.com/folder/d/0B6wW18mYskvBNWZLWVNXWmUtME0/edit?pli=1

seems to benefit folk on longer lines.

Locky · 15 Apr 2013 at 10:33

j_to_da_t said:
I swapped my DSL cable over for the Tandy high quality one yesterday. I did so at the same time as installing the new modem firmware as I didn't want to have more than one disconnection in case DLM saw them as dropped connections.

Because of this it is difficult to say which was responsible for the DS speed increase, but there was a definite increase. Attainable speed went up by 4mb, sync speed by about 2.5mb.

I would say both have a part to play, very nice increase for little outlay.

This will help people whos lines are not as expected.

I would be happy with that.

You will notice less crc/hec errors too, this might also help people who drop in and of fastpath.