Another line stats thread...
- Thread starter BoomAM
- Start date
Can you post a cut 'n' paste the ADSL stats?
The figures you give can be taken in many context's, it'd help if the actual stats where given verbatim, e.g. an SNR Margin means a lot more then SNR when it comes to 'Noise', and is the 4M 'speed' your download speed, or the ADSL Sync rate?
The figures you give can be taken in many context's, it'd help if the actual stats where given verbatim, e.g. an SNR Margin means a lot more then SNR when it comes to 'Noise', and is the 4M 'speed' your download speed, or the ADSL Sync rate?
ADSL Link Downstream Upstream
Connection Speed 4095 kbps 605 kbps
Line Attenuation 11.0db 7.1db
Noise Margin 15.9db 20.4db
Thats all it gives me.
##EDIT##
Telnet'd into my router:
Connection Speed 4095 kbps 605 kbps
Line Attenuation 11.0db 7.1db
Noise Margin 15.9db 20.4db
Thats all it gives me.
##EDIT##
Telnet'd into my router:
Code:
adslctl: ADSL driver and PHY status
Status: ShowtimeRetrain Reason: 1
Channel: FAST, Upstream rate = 605 Kbps, Downstream rate = 4092 Kbps
Link Power State: L0
Mode: ADSL2+
Channel: Fast
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 15.3 21.2
Attn(dB): 11.5 1.7
Pwr(dBm): -4.9 -3.6
Max(Kbps): 15884 945
Rate (Kbps): 4092 605
G.dmt framing
K: 21(0) 9
R: 16 16
S: 1 16
D: 128 8
ADSL2 framing
MSGc: 60 14
B: 20 8
M: 1 16
T: 6 7
R: 16 16
S: 0.1629 7.4853
L: 1817 171
D: 384 8
Counters
SF: 87999 88693
SFErr: 0 0
RS: 34847820 757794
RSCorr: 73 0
RSUnCorr: 0 0
HEC: 0 37
OCD: 0 0
LCD: 0 0
Total Cells: 13699982 4024398
Data Cells: 5424106 549464
Drop Cells: 0
Bit Errors: 0 1721
ES: 1 4
SES: 1 4
UAS: 692 3782669
AS: 1420
INP: 13.52 2.99
PER: 16.12 16.37
delay: 15.63 14.97
OR: 32.73 9.77
Bitswap: 0 332
Total time = 50 min 16 sec
SF = 98570
CRC = 489
LOS = 1
LOF = 9
ES = 1
Latest 1 day time = 50 min 16 sec
SF = 98570
CRC = 489
LOS = 1
LOF = 9
ES = 1
Latest 15 minutes time = 5 min 16 sec
SF = 19590
CRC = 0
LOS = 0
LOF = 0
ES = 0
Previous 15 minutes time = 15 min 0 sec
SF = 55786
CRC = 0
LOS = 0
LOF = 0
ES = 0
Previous 1 day time = 0 sec
SF = 0
CRC = 0
LOS = 0
LOF = 0
ES = 0
15 minutes interval [-30 min to -15 min] time = 15 min 0 sec
SF = 12623
CRC = 0
LOS = 0
LOF = 0
ES = 0
15 minutes interval [-45 min to -30 min] time = 15 min 0 sec
SF = 10571
CRC = 489
LOS = 1
LOF = 9
ES = 1
Showtime Drop Reason: 1
Last Retrain Reason: 1
Last edited:
Much credability in this:
http://www.skyuser.co.uk/forum/tech...-help-slower-speeds-llu-than-bt-adsl-max.html
Apparently sky lock it at 4Meg to start with?
http://www.skyuser.co.uk/forum/tech...-help-slower-speeds-llu-than-bt-adsl-max.html
Apparently sky lock it at 4Meg to start with?
To be honest I'd expect a higher SNR than that with a 11.5 Attenuated line. The figures you have at the moment should vary over the next few days as DLM kicks in.
You might want to check your wiring and connect directly to the master socket to eliminate noise.
Just as an example my line is 10db attenuated (so just a little bit shorter) and I got 31 SNR at 4091 connection speed.
You might want to check your wiring and connect directly to the master socket to eliminate noise.
Just as an example my line is 10db attenuated (so just a little bit shorter) and I got 31 SNR at 4091 connection speed.
Deleted member 651465
Deleted member 651465
Yes, for the first 72hrs.
After that DLM will kick in and your speed will adjust every morning at 2am.
With an attenuation of 10dB, you should get the full 20Mb. Actually 24Mb.
http://www.kitz.co.uk/adsl/max_speed_calc.php
The target for Sky LLU is 7dB for Noise margin, so anything higher is causing your line to be artificially slower. Presuming you are with Sky give them a call and they'll whack you up to your maximum.
Last edited by a moderator:
Brand new flat. One socket, one thing on the socket, a microfilter, and on that, my router. lol.
Cant get cleaner than that!
20Mb even with the noise that high?
Is there much point in calling them? Shall i just leave it be for the next 3 days and see what speed i have then? Because if im getting 15Mb+...?
Or shall i phone them now? Get it out the way?
Last edited:
I'd leave it, Give it a few days, just to let any training or other mechanisms time to be ruled out..
Then take it from there..
My brother when he first went to O2 was right on the exchange, they limited his connection in the exchange somehow to 16Mbps, his line attenuation was so low this still ended up with over 10dB of SNR Margin.. after a week he phoned them, and they did something, rebooted his router, and it connected at the full 24Mbps with 8.2db SNR..
Last edited:
Deleted member 651465
Deleted member 651465
Higher noise margin is better! Usually as the speed increases, the noise margin decreases until you hit 7dB. Any lower than 7 and you'll run in to stability issues, any higher and you're being "held back" so to speak.
If you're getting 15Mb with a high margin then it means you have scope to go faster.
If you have a dongle filter, chuck that and get a filtered faceplate from ADSL nation. It'll make the setup that much cleaner and pleasing to the eye.
Deleted member 651465
Deleted member 651465
How does this speed it up?
It tricks the exchange into retesting the line more often than the once a day default. Turning the router off makes the exchange think "hang on a sec the connection drops need to retest the line"
However do not turn it off more than 3 times per day or it classes a fault on the line and restarts the whole retraining period.
So basically with a new line/broadband connection it tests it once every day upto 11 days until the speed and noise margin settle down to the most stable connection it can provide considering line length etc. Thats why you may get disconnects and drops in the first few days its the exchange testing the line.
(I used to work for a Business ISP)
Several, but is there any point considering how its still in the 'training' period?
Would be better to see what it normalises at surely?
Deleted member 651465
Deleted member 651465
Well its one day past, 2am has gone...same speed.
Surely with the rest of the stats being as they are, the bizzare power reading is likely to be a GUI error on my router?
It takes 3 days before the training begins to change your speed.