Hey
So my regrade to an ADSL2+ service completed on Thursday and I'm a bit concerned that I haven't seen an increase in sync rate on my router. From what I've read elsewhere people who have re-graded see an increase in sync rate immediately and the IP Profile increases over the training period.
So what should I be expecting?
Thanks
Ben
Current stats below:-
Downstream
Download speed achieved during the test was - 5842 Kbps
For your connection, the acceptable range of speeds is 2000-7150 Kbps.
Additional Information:
Your DSL Connection Rate :7126 Kbps(DOWN-STREAM), 888 Kbps(UP-STREAM)
IP Profile for your line is - 6286 Kbps
Upstream
Upload speed achieved during the test was - 741 Kbps
Additional Information:
Upstream Rate IP profile on your line is - 888 Kbps
Router
Line Attenuation: (Down)44.5db (Up)24.4db
Noise Margin: (Down)5.4db (Up)9.8db
That looks weird, your upstream shows you have been switched, and with your attenuation I'd expect a better d/s sync speed. What router are you using?
It's a netgear DGND3300.
Some details below.
Firmware Version: V2.1.00.48_1.00.48
ADSL Firmware Version: A2pB023k.d20k_rc2
http://www.netgear.co.uk/home/products/wirelessrouters/high-performance/DGND3300.aspx (http://www.netgear.co.uk/home/products/wirelessrouters/high-performance/DGND3300.aspx)
And uptime
Port | Status | TxPkts | RxPkts | Collisions | Tx B/s | Rx B/s | Up Time |
WAN | PPPoA | 1039432 | 1394567 | 0 | 2857 | 10055 | 34:51:04 |
How's the router connected to the phone line, eg master socket, hard-wired extension, flying lead extension? What else is connected to the line?
Also which adsl modality is the router/modem using it should be ITU G.992.5 Annex M
The router connects straight to the master socket, there is some extension wiring from the master socket but only a phone is attached. I'm using an adslnation nte5 faceplate.
Unfortunately the router EWS doesn't provide me with the modality information, I think i can enable telnet and get it though, will do that now.
Ben
Try removing the faceplate and plugging in to the test socket, Ben. Check your stats as soon as the router resyncs.
Heres the adsl stats from telnet hope it's what you were after. EDIT: BEFORE TEST SOCKET
# adslctl info --stats
adslctl: ADSL driver and PHY status
Status: ShowtimeRetrain Reason: 8000
Channel: FAST, Upstream rate = 888 Kbps, Downstream rate = 7126 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): 5.5 10.0
Attn(dB): 44.5 24.4
Pwr(dBm): 0.0 12.7
Max(Kbps): 7964 888
Rate (Kbps): 7126 888
G.dmt framing
K: 223(0) 14
R: 16 16
S: 1 8
D: 32 8
ADSL2 framing
MSGc: 59 10
B: 222 13
M: 1 8
T: 1 9
R: 16 16
S: 0.9968 4.0000
L: 1918 256
D: 32 8
Counters
SF: 8907903 560182
SFErr: 4420 4294967264
RS: 579013696 2567094
RSCorr: 2806742 0
RSUnCorr: 79292 0
HEC: 4034 4294967285
OCD: 212 0
LCD: 0 0
Total Cells: 2425140631 50501
Data Cells: 30739184 62
Drop Cells: 14762
Bit Errors: 0 0
ES: 1434 0
SES: 16 0
UAS: 37 0
AS: 144302
INP: 1.06 2.00
PER: 16.19 18.00
delay: 7.97 8.00
OR: 32.10 7.11
Bitswap: 17495 3680
Total time = 1 days 16 hours 60 sec
SF = 8907903
CRC = 4420
LOS = 0
LOF = 0
ES = 1434
Latest 1 day time = 16 hours 60 sec
SF = 3559410
CRC = 780
LOS = 0
LOF = 0
ES = 291
Latest 15 minutes time = 60 sec
SF = 3715
CRC = 0
LOS = 0
LOF = 0
ES = 0
Previous 15 minutes time = 15 min 0 sec
SF = 55602
CRC = 30
LOS = 0
LOF = 0
ES = 11
Previous 1 day time = 24 hours 0 sec
SF = 5348493
CRC = 3640
LOS = 0
LOF = 0
ES = 1143
15 minutes interval [-30 min to -15 min] time = 15 min 0 sec
SF = 55539
CRC = 41
LOS = 0
LOF = 0
ES = 16
15 minutes interval [-45 min to -30 min] time = 15 min 0 sec
SF = 55539
CRC = 50
LOS = 0
LOF = 0
ES = 18
15 minutes interval [-60 min to -45 min] time = 15 min 0 sec
SF = 55540
CRC = 37
LOS = 0
LOF = 0
ES = 15
Showtime Drop Reason: 8000
Last Retrain Reason: 8000
That looks OK.
I wonder if BT have set the adsl2+ profile at adslmax, (but they don't usually do that without being asked), not sure how that would show up in the adsl info
Stats on the test socket.
ADSL Link Downstream Upstream
Connection Speed 7438 kbps 888 kbps
Line Attenuation 44.5 db 24.5 db
Noise Margin 6.2 db 11.4 db
# adslctl info --stats
adslctl: ADSL driver and PHY status
Status: ShowtimeRetrain Reason: 8000
Channel: FAST, Upstream rate = 888 Kbps, Downstream rate = 7438 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): 6.2 11.4
Attn(dB): 44.5 24.5
Pwr(dBm): 0.0 12.9
Max(Kbps): 8940 888
Rate (Kbps): 7438 888
G.dmt framing
K: 233(0) 14
R: 16 16
S: 1 8
D: 32 8
ADSL2 framing
MSGc: 59 10
B: 232 13
M: 1 8
T: 1 9
R: 16 16
S: 0.9979 4.0000
L: 1996 256
D: 32 8
Counters
SF: 5380 4849
SFErr: 0 0
RS: 349708 87295
RSCorr: 142 0
RSUnCorr: 0 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 1517386 1241086
Data Cells: 30814 34054
Drop Cells: 14762
Bit Errors: 0 3397
ES: 1446 0
SES: 17 119
UAS: 101 0
AS: 88
INP: 1.02 2.00
PER: 16.21 18.00
delay: 7.98 8.00
OR: 32.06 7.11
Bitswap: 6 0
Total time = 1 days 16 hours 12 min 27 sec
SF = 8943436
CRC = 4910
LOS = 1
LOF = 9
ES = 1446
Latest 1 day time = 16 hours 12 min 27 sec
SF = 3594943
CRC = 1270
LOS = 1
LOF = 9
ES = 303
Latest 15 minutes time = 12 min 27 sec
SF = 39248
CRC = 490
LOS = 1
LOF = 9
ES = 12
Previous 15 minutes time = 15 min 0 sec
SF = 55602
CRC = 30
LOS = 0
LOF = 0
ES = 11
Previous 1 day time = 24 hours 0 sec
SF = 5348493
CRC = 3640
LOS = 0
LOF = 0
ES = 1143
15 minutes interval [-30 min to -15 min] time = 15 min 0 sec
SF = 55539
CRC = 41
LOS = 0
LOF = 0
ES = 16
15 minutes interval [-45 min to -30 min] time = 15 min 0 sec
SF = 55539
CRC = 50
LOS = 0
LOF = 0
ES = 18
15 minutes interval [-60 min to -45 min] time = 15 min 0 sec
SF = 55540
CRC = 37
LOS = 0
LOF = 0
ES = 15
Showtime Drop Reason: 8000
Last Retrain Reason: 8000
It's almost as if BT have profiled the line to Max. This is one for support, I'm afraid, but they won't be able to do anything until Tuesday, when BT re-open.
Ok Thanks Rik and Steve, most helpful! Will post the outcome here.
Good luck. :fingers:
The router is reporting information for G.DMT and also ADSL2 framing - seems strange? Normally I would only expect to see ADSL2 framing information unless I am mistaken :D
Yeah.. I don't pretend to understand half of whats in that status stuff, but it does say ADSL2+ at the top so I guess it's supposed to be that way.
I think that's why we are thinking the adsl2+ profile is set at adslmax. What I'm not sure is what you see if the adsl modality in the router/modem is set to G.DMT
Given your downstream attenuation your current sync speed looks spot on to me.
Agree, the sync speed you have looks pretty much normal for your line length / attenuation. Assuming nothing is wrong with your line then I'd say it's about 3 to 3.5km in length (reference 1 below). If you look at the fancy graphs on the reference 2 you'll note that beyond about 3km the difference between ADSL and ADSL2 tends towards insignificance. You only really get a significant speed increase for lines less than 3km (or those <about 40db attenuation)
In summary - your ADSL2 sync speeds look entirely normal :)
Reference 1:
http://whirlpool.net.au/wiki/dslam_speeds (http://whirlpool.net.au/wiki/dslam_speeds)
Reference 2:
http://en.wikipedia.org/wiki/G.992.1 (http://en.wikipedia.org/wiki/G.992.1)
Yeah, looks about right after seeing the graphs.
Kitz certainly is in agreement regarding the current sync although suggests a gain over adslmax of around 1500Kbps.
http://www.kitz.co.uk/adsl/max_speed_calc.php