Banded again :(
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- Re: Banded again :(
Banded again :(
30-07-2015 9:17 PM
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The cause of the banding seems to be errored seconds, the last few times the banding has been removed, even at 6dB the line does not resync, but DLM keeps upping the margin until it eventually bands. I’ve concluded that this is just one of those lines that DLM doesn’t get on well with, and a 9dB target seems to give a good balance between errors and throughput (my previous LLU ISP had me on a 9dB interleaved profile, and performance and stability were good).
I'm in a filtered faceplate, (this has been replaced, and I have tried in the test socket with no difference to errored seconds). All electrical equipment unplugged and switched off makes no change, and the voice line is clear. The cause of the errored seconds looks to be external to me, and with no fault there’s no way to get Openreach to try and improve it.
Thanks.
Stats:
Uptime: 1 days 21:25:28 (n.b. I have maintained a connection for over 3 days and remained banded - this drop was me turning electrical equipment off to ensure it's nothing in my premises causing the ES).
Mode: ADSL_2plus
Downstream Upstream
Line Coding(Trellis): On On
SNR Margin (1 dB): 9.7 5.6
Attenuation (1 dB): 40.5 21.5
Output Power (1 dBm): 0.0 12.8
Attainable Rate (Kbps): 10140 1140
Rate (Kbps): 6655 1139
D (interleaver depth): 96 4
Delay (msec): 6 6
INP (DMT symbol): 2.50 0.00
Super Frames: 10087874 9112397
Super Frame Errors: 107 236
RS Words: 2481616609 2816220
RS Correctable Errors: 56852 936
RS Uncorrectable Errors: 4284 0
HEC Errors: 1041 231
OCD Errors: 62 0
LCD Errors: 62 0
Total Cells: 2559651871 437550441
Data Cells: 148082688 9675255
Bit Errors: 0 25947
Total ES: 81 159
Total SES: 0 0
Total UAS: 52 52
Re: Banded again :(
31-07-2015 11:08 AM
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Suggest merging this and the recent threads below to keep history and context together.
http://community.plus.net/forum/index.php/topic,141455.msg1248032.html#msg1248032
http://community.plus.net/forum/index.php/topic,140428.msg1238677.html#msg1238677
There seems little point in removing banding yet again whilst there is an apparet issue causing the line to be banded.
In another browser tab, login into the Plusnet user portal BEFORE clicking the fault & ticket links
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Re: Banded again :(
31-07-2015 11:13 AM
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Quote from: Townman There seems little point in removing Bandung yet again whilst there is an apparet issue causing the line to be banded.
Agreed, just removing the banding is fruitless. This is why I've asked for a fixed 9db profile. There's nothing in my control that can improve the line quality.
Re: Banded again :(
01-08-2015 4:44 PM
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I've got a few other things to try (not involving the router - more to do with turning off *everything* in the house at the consumer unit) this weekend.
I realise this maybe isn't helping convince DLM to remove banding, so after the weekend will leave connected and leave well alone.
Happy for this to be put on hold for a little while, and we'll see if banding comes off on it's own.
If however - a nice staff member fancies nailing my SNR to a 9dB target (please don't just remove the banding, the profile needs to be fixed to stop this reoccurring) then feel free! I'm happy with the speed and stability at 9dB.
Thanks
Edit: just to clarify, the line has not lost sync once without my intervention.
Re: Banded again :(
03-08-2015 9:29 AM
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ADSL Link Downstream Upstream
Connection Speed 6655 kbps 1148 kbps
Line Attenuation 41.0 db 20.5 db
Noise Margin 12.8 db 5.8 db
Total time = 12 hours 53 min 53 sec
SF = 2868818
CRC = 45
LOS = 0
LOF = 0
ES = 34
Looks about the same as the Plusnet 2704n, so will leave this as is for the next few weeks now.
I'd still like a fixed 9db target on the DS, as I had with my previous ISP (and which I'm happy with for the day or so that DLM leaves me with that), so if that can be arranged that'd be appreciated.
Many thanks.
Re: Banded again :(
07-08-2015 9:43 AM
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Please please please could a PlusNet rep set this to be fixed to 9db downstream, and leave upstream as is? As per https://community.plus.net/forum/index.php/topic,142461.msg1256954.html#msg1256954 - this should be possible, and I'm happy with the speed/stability at this rate.
System Up Time 109:08:56
Port Status Up Time
WAN PPPoA 109:07:54
ADSL Link Downstream Upstream
Connection Speed 6655 kbps 1148 kbps
Line Attenuation 41.0 db 20.5 db
Noise Margin 13.2 db 5.8 db
Total time
SF = 24302341
CRC = 360
LOS = 0
LOF = 0
ES = 259
Latest 1 day time
SF = 2926524
CRC = 82
LOS = 0
LOF = 0
ES = 48
Re: Banded again :(
07-08-2015 10:13 AM
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Re: Banded again :(
07-08-2015 1:14 PM
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Re: Banded again :(
07-08-2015 3:51 PM
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Re: Banded again :(
07-08-2015 4:35 PM
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Re: Banded again :(
08-08-2015 12:28 PM
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Thanks,
JG
Re: Banded again :(
08-08-2015 2:53 PM
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Re: Banded again :(
08-08-2015 2:54 PM
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Re: Banded again :(
08-08-2015 5:53 PM
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Many thanks for your efforts, it's appreciated.
Enjoy the rest of your weekend
Re: Banded again :(
16-08-2015 3:56 PM
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Appreciate all the help with this. Hopefully I won't need it again!
JG
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