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Standard User chrigurndevon
(newbie) Tue 30-Oct-12 07:03:05
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Poor upload speeds with BT adsl


[link to this post]
 
I recently switched from BE (o2) to BT broadband, in preparation for fibre which is coming my way soon. At the moment though I'm still on adsl2 and although my download speeds have remained similar (about 3Mbps) my upload speeds have fallen from just under 1Mbps with BE, to around 0.2 with BT.

Is this normal, or was the BE LLU kit in my exchange just doing a better job?

I have tried re-syncing my line many times but the speeds remain the same.
Standard User RobertoS
(sensei) Tue 30-Oct-12 07:32:53
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Re: Poor upload speeds with BT adsl


[re: chrigurndevon] [link to this post]
 
Please can you post your line/router stats. See here for help finding them.

Doing frequent re-sync's can badly affect your downstream, for weeks, on BT Wholesale-based systems. Don't do it!

My broadband basic info/help site - www.robertos.me.uk | Domains,website and mail hosting - Tsohost.
Connection - Plusnet Extra Fibre (FTTC). Sync ~ 57.4/14.6Mbps @ 600m. - BQM

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.
Standard User chrigurndevon
(newbie) Tue 30-Oct-12 08:46:55
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Re: Poor upload speeds with BT adsl


[re: RobertoS] [link to this post]
 
Latest speed test show DL speed of 4Mbps, UL speed of 0.3

Router stats:
Connection Speed: Down 5152, Up 448
Line Attenuation: Down 53.0, Up 27.5
Noise Margin: Down 6.4, Up 21.0

I use the same Netgear router for BT that I used with BE (the Netgear is slightly faster than the HH3), so nothing has changed my end, except for the ISP.


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Standard User RobertoS
(sensei) Tue 30-Oct-12 08:54:14
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Re: Poor upload speeds with BT adsl


[re: chrigurndevon] [link to this post]
 
As I suspected, your poor upload is because of the upstream 448kbps, which is the normal for ADSL, not the ADSL2+ you think you are on.

I assume from your using that router on Be that it has a Broadcom chipset. We can establish ADSL/ADSL2/ADSL2+ definitively from the full stats. If you go to this page and scroll to the bottom, you will see my instructions for getting them smile.

It could also help if you tell us your exchange. The URL of what samknows says for your line would be ideal.

My broadband basic info/help site - www.robertos.me.uk | Domains,website and mail hosting - Tsohost.
Connection - Plusnet Extra Fibre (FTTC). Sync ~ 57.4/14.6Mbps @ 600m. - BQM

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.
Standard User chrigurndevon
(newbie) Tue 30-Oct-12 09:25:35
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Re: Poor upload speeds with BT adsl


[re: RobertoS] [link to this post]
 
Info below. I'm happy with the DL speed - similar to the speed I had with BE. It's the upstream speed which seems very poor - about 30% of what I used to get with BE. Perhaps this is just the standard BT Broadband UL speed (which they don't seem to publicise). I always assumed I was was on ADSL2 based on the BT checker results below. Exchange is Exeter (WWEXTR). Not too worried though as I'm due to get FTTP in a few months - more curious why BT's UL speed is so much worse than BE's, and why they don't mention it.

Router info below:

Network Type PPPoA
Modem
ADSL Firmware Version A2pB023k.d20k_rc2
Modem Status Connected
DownStream Connection Speed 5152 kbps
UpStream Connection Speed 448 kbps
VPI 0
VCI 38



BT checker results below:
Your exchange is ADSL enabled, and our initial test on your line indicates that your line should be able to have an ADSL broadband service that provides a fixed line speed up to 2Mbps.

Our test also indicates that your line currently supports an estimated ADSL Max broadband line speed of 3Mbps; typically the line speed would range between 2Mbps and 5.5Mbps.

Our test also indicates that your line should be able to have an ADSL2+ broadband service that provides a fixed line speed up to 2Mbps.

Our test also indicates that your line currently supports an estimated ADSL2+ broadband line speed of 3Mbps; typically the line speed would range between 2.5Mbps and 6.5Mbps
.
Standard User RobertoS
(sensei) Tue 30-Oct-12 09:32:38
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Re: Poor upload speeds with BT adsl


[re: chrigurndevon] [link to this post]
 
That's not the stats I asked for tongue. There is a fair chance your upstream can be made as good as the Be one was, but we need the stats as per the link I gave you to be sure. Then we will know what you have to tell BT support.

My broadband basic info/help site - www.robertos.me.uk | Domains,website and mail hosting - Tsohost.
Connection - Plusnet Extra Fibre (FTTC). Sync ~ 57.4/14.6Mbps @ 600m. - BQM

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.
Standard User chrigurndevon
(newbie) Tue 30-Oct-12 09:33:40
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Re: Poor upload speeds with BT adsl


[re: chrigurndevon] [link to this post]
 
Here's some more data:

:# adslctl info --stats
adslctl: ADSL driver and PHY status
Status: ShowtimeRetrain Reason: 0
Channel: INTR, Upstream rate = 448 Kbps, Downstream rate = 5152 Kbps
Link Power State: L0
Mode: G.DMT
Channel: Interleave
Trellis: ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 6.4 21.0
Attn(dB): 53.0 27.5
Pwr(dBm): 19.3 12.7
Max(Kbps): 5600 1100
Rate (Kbps): 5152 448
G.dmt framing
K: 162(0) 15
R: 8 16
S: 1 8
D: 32 4
ADSL2 framing
MSGc: 1 1
B: 162 15
M: 1 8
T: 1 1
R: 8 16
S: 1.0490 9.0000
L: 1304 128
D: 32 4
Administrator MrSaffron
(staff) Tue 30-Oct-12 09:39:24
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Re: Poor upload speeds with BT adsl


[re: chrigurndevon] [link to this post]
 
For reasons only known to BT Retail they only have you on their ADSL product, not the ADSL2+ service.

The exchange offers ADSL2+ via the 21CN WBC network, so not sure why ADSL only has been provided

Andrew Ferguson, andrew@thinkbroadband.com
www.thinkbroadband.com - formerly known as ADSLguide.org.uk
The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User chrigurndevon
(newbie) Tue 30-Oct-12 09:44:17
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Re: Poor upload speeds with BT adsl


[re: RobertoS] [link to this post]
 
Here's the whole report...



BusyBox v1.00 (2011.12.09-06:01+0000) Built-in shell (ash)
Enter 'help' for a list of built-in commands.

# adslctl info --stats
adslctl: ADSL driver and PHY status
Status: ShowtimeRetrain Reason: 0
Channel: INTR, Upstream rate = 448 Kbps, Downstream rate = 5088 Kbps
Link Power State: L0
Mode: G.DMT
Channel: Interleave
Trellis: ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 6.8 20.0
Attn(dB): 52.0 27.5
Pwr(dBm): 19.3 12.7
Max(Kbps): 5504 1068
Rate (Kbps): 5088 448
G.dmt framing
K: 160(0) 15
R: 8 16
S: 1 8
D: 32 4
ADSL2 framing
MSGc: 1 1
B: 160 15
M: 1 8
T: 1 1
R: 8 16
S: 1.0496 9.0000
L: 1288 128
D: 32 4
Counters
SF: 13569 13509
SFErr: 2 0
RS: 922722 114826
RSCorr: 25914 0
RSUnCorr: 2 0

HEC: 1 0
OCD: 0 0
LCD: 0 0
Total Cells: 2768480 0
Data Cells: 140236 0
Drop Cells: 0
Bit Errors: 0 0

ES: 1 0
SES: 0 0
UAS: 15 0
AS: 231

INP: 0.79 2.00
PER: 1.83 1.96
delay: 8.39 9.00
OR: 30.48 28.44

Bitswap: 0 0

Total time = 49710 days 6 hours 27 min 32 sec
SF = 13569
CRC = 2
LOS = 0
LOF = 0
ES = 1
Latest 1 day time = 49710 days 6 hours 27 min 32 sec
SF = 13569
CRC = 2
LOS = 0
LOF = 0
ES = 1
Latest 15 minutes time = 49710 days 6 hours 27 min 32 sec
SF = 13569
CRC = 2
LOS = 0
LOF = 0
ES = 1
Previous 15 minutes time = 0 sec
SF = 0
CRC = 0
LOS = 0
LOF = 0
ES = 0
Previous 1 day time = 0 sec
SF = 0
CRC = 0
LOS = 0
LOF = 0
ES = 0
Showtime Drop Reason: 0
Last Retrain Reason: 0
#
Standard User RobertoS
(sensei) Tue 30-Oct-12 09:47:02
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Re: Poor upload speeds with BT adsl


[re: chrigurndevon] [link to this post]
 
As MrSaffron says. "Mode: G.DMT" is ADSL(1). That's what I wanted to see. You need to get onto them and find out why, and see if they will change it.

You might find they say it is because of the line length. That's rubbish, as you know from Be.

You want ADSL2+ by the way, not the ADSL2 you mentioned at the start.

G.DMT = ADSL.
G.992.3 = ADSL2.
G.992.5 = ADSL2+.

My broadband basic info/help site - www.robertos.me.uk | Domains,website and mail hosting - Tsohost.
Connection - Plusnet Extra Fibre (FTTC). Sync ~ 57.4/14.6Mbps @ 600m. - BQM

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.
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