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Advice on reduced BB speed since switch from BT

r0bward
Newbie
Posts: 3
Registered: 27-02-2013

Advice on reduced BB speed since switch from BT

I have recently switched from BT to PlusNet and would like some advice on why my BB performance appears to have deteriorated. I have given plenty of time for stabilisation etc (>5 days continuous connection). My latest stats are below and for comparison I've given  previous stats from when I was with BT below that. My IP profile when with BT ranged from 2.5 - 3 Mbps (occasionally 3.5). I have provided both the router stats and BTW performance data. Can anyone tell me is there anything I can do about this. My router is plugged in to the master socket and I've followed all the advice. Thanks
1. Most recent test:
Technicolor TG582n - DSL Connection
Link Information
Uptime: 5 days, 2:06:59
DSL Type: ITU-T G.992.1
Bandwidth (Up/Down) [kbps/kbps]: 448 / 2.720
Data Transferred (Sent/Received) [MB/MB]: 303,94 / 855,86
Output Power (Up/Down) [dBm]: 11,9 / 17,7
Line Attenuation (Up/Down) [dB]: 28,0 / 50,0
SN Margin (Up/Down) [dB]: 22,0 / 6,3
System Vendor ID (Local/Remote): TMMB / ----
Chipset Vendor ID (Local/Remote): BDCM / ALCB
Loss of Framing (Local/Remote): 0 / -
Loss of Signal (Local/Remote): 0 / -
Loss of Power (Local/Remote): 0 / -
Loss of Link (Remote): -
Error Seconds (Local/Remote): 436 / -
FEC Errors (Up/Down): 458 / 175.827
CRC Errors (Up/Down): 122 / 551
HEC Errors (Up/Down): -22 / 551 / 2.106
BTW stats:

1. Best Effort Test:  -provides background information.
Download  Speed: 1.45 Mbps
Max Achievable Speed: 2 Mbps
Download speed achieved during the test was - 1.45 Mbps
For your connection, the acceptable range of speeds is 0.4 Mbps-2 Mbps.
Additional Information:
Your DSL Connection Rate :2.72 Mbps(DOWN-STREAM), 0.45 Mbps(UP-STREAM)
IP Profile for your line is - 2 Mbps
2. Previous test with BT
Line state Connected
Connection time 4 days, 0:22:32
Downstream 2,976 Kbps
Upstream 448 Kbps
ADSL settings
VPI/VCI 0/38
Type PPPoA
Modulation ITU-T G.992.1
Latency type Interleaved
Noise margin (Down/Up) 6.5 dB / 21.0 dB
Line attenuation (Down/Up) 50.0 dB / 29.0 dB
Output power (Down/Up) 17.3 dBm / 11.8 dBm
Loss of Framing (Local) 0
Loss of Signal (Local) 0
Loss of Power (Local) 0
FEC Errors (Down/Up) 770276 / 109
CRC Errors (Down/Up) 1318 / N/A
HEC Errors (Down/Up) N/A / 80
BTW stats:
1. Best Effort Test:  -provides background information.
Download  Speed: 2.35 Mbps
Max Achievable Speed: 7.15 Mbps
Download speed achieved during the test was - 2.35 Mbps
For your connection, the acceptable range of speeds is 0.7 Mbps-7.15 Mbps.
Additional Information:
Your DSL Connection Rate :2.98 Mbps(DOWN-STREAM), 0.45 Mbps(UP-STREAM)
IP Profile for your line is - 2.5 Mbps
5 REPLIES
Community Veteran
Posts: 5,057
Thanks: 426
Fixes: 16
Registered: 10-06-2010

Re: Advice on reduced BB speed since switch from BT

The sync rates of 2976 and 2720 are not significantly different, but unfortunately on 20CN you need 2848 to get the IP profile of 2.5 Mbps. You fell just short and ended up with an IP Profile of 2 Mbps.
According to http://www.kitz.co.uk/adsl/max_speed_calc.php for an attenuation of 50 your max speed should be 4832, so your line appears to be performing fairly poorly in general, and as expected, switching from BT to Plusnet did not change that.
Plusnet Alumni (retired) chrispurvey
Plusnet Alumni (retired)
Posts: 5,369
Fixes: 1
Registered: 13-07-2012

Re: Advice on reduced BB speed since switch from BT

Hi there,
As ejs has mentioned it your sync rate has slightly reduced and is now setting your profile as 2Mb/s, would you be able to connect to your <a href="http://www.plus.net/support/broadband/master-socket-guide.shtml#whatsTest">test socket</a> and see if there is any difference?
r0bward
Newbie
Posts: 3
Registered: 27-02-2013

Re: Advice on reduced BB speed since switch from BT

Hi, the stats were obtained while connected to the test socket. I know I can't expect super fast speeds but I want to get the best I can out of what I've got.  1.45 v 2.35 Mbps makes a noticeable difference so anything more would help.  Thanks.
Plusnet Alumni (retired) chrispurvey
Plusnet Alumni (retired)
Posts: 5,369
Fixes: 1
Registered: 13-07-2012

Re: Advice on reduced BB speed since switch from BT

I've made a couple of changes on your line, can you see if there is any improvement later today and let me know.
r0bward
Newbie
Posts: 3
Registered: 27-02-2013

Re: Advice on reduced BB speed since switch from BT

Hi Chris,
Thanks for looking in to this. When I got back from work and tested (at around 8 pm)  I could see from the log that the connection had been re-established at around 9.44 am (your interaction, I guess).  Test results show a significant improvement as follows:
Download  Speed = 2.22 Mbps,
Max Achievable Speed = 7.15 Mb (don't really know what this means?),
The acceptable range of speeds is 0.6 Mbps-7.15 Mbps,
Your DSL Connection Rate :3.46 Mbps(DOWN-STREAM), 0.45 Mbps(UP-STREAM)
IP Profile for your line is - 2.5 Mbps
Router is synched as follows:
Bandwidth (Up/Down) [kbps/kbps]: 448 / 3.456
A further test this morning (with a connection time of 13h 30m) gives pretty much the same stats. So fingers crossed.....