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Standard User XRaySpeX
(eat-sleep-adslguide) Sun 31-Mar-13 18:11:54
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Re: Switching to BT - My Experiences


[re: matthewcl375] [link to this post]
 
You are now syncing at 17.5 Meg at the default 6dB NM.

However, I'm afraid that I find that this short line is still seriously under-performing. It should be syncing well over 20 Meg, if not at the max. of 24 Meg, and it should have got there by now.

My much longer 26 db attn. line syncs about the same on a 6dB NM.

EDIT: Wait and see if and what a 3dB NM can do to it.

1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 20 Meg WBC

Edited by XRaySpeX (Sun 31-Mar-13 18:24:24)

Standard User 4M2
(fountain of knowledge) Sun 31-Mar-13 18:15:42
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Re: Switching to BT - My Experiences


[re: XRaySpeX] [link to this post]
 
Yes I should have said the ADSL2+ downstream attenuations that we have seen in the OP's recent router stats.

I think yourself and RobertoS discussed earlier in this thread that the attenuations are now in proportion smile
Standard User matthewcl375
(committed) Sun 31-Mar-13 20:51:25
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Re: Switching to BT - My Experiences


[re: XRaySpeX] [link to this post]
 
Yes you're right, I don't see what I can do though, if I'm syncing within the speeds BT estimated then I doubt they're going to see it as a problem...

Once I'm out of the training period tho may try another router


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Standard User XRaySpeX
(eat-sleep-adslguide) Sun 31-Mar-13 21:59:24
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Re: Switching to BT - My Experiences


[re: matthewcl375] [link to this post]
 
Having similar under-performance symptoms on both ADSL Max & WBC would seem to point to something specific on your particular line & wiring. Have you tried running on WBC from the test socket?

If it's any consolation it took Orange 3 months to get my line running as it should but that is down to Orange's incompetence and the switch from LLU to WBC.

1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 20 Meg WBC
Standard User matthewcl375
(committed) Sun 31-Mar-13 22:17:58
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Re: Switching to BT - My Experiences


[re: XRaySpeX] [link to this post]
 
I haven't tried the test socket again it's something I will get round to probably once the 10 day training has ended
Standard User matthewcl375
(committed) Tue 02-Apr-13 13:30:17
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Re: Switching to BT - My Experiences


[re: matthewcl375] [link to this post]
 
Jussst had a re-sync here's what's showing on the event log:


12:57:14, 02 Apr. (547313.600000) DSL is up
12:57:11, 02 Apr. (547310.950000) DSL noise margin: 5.90 dB upstream, 4.90 dB downstream
12:57:10, 02 Apr. (547309.870000) DSL line rate: 1223 Kbps upstream, 19000 Kbps downstream


And stats:


ADSL Line Status

Connection Information

Line state: Connected
Connection time: 0 days, 00:32:31
Downstream: 18.56 Mbps
Upstream: 1.195 Mbps

ADSL Settings

VPI/VCI: 0/38
Type: PPPoA
Modulation: G.992.5 Annex A
Latency type: Fast
Noise margin (Down/Up): 4.8 dB / 5.9 dB
Line attenuation (Down/Up): 6.2 dB / 3.3 dB
Output power (Down/Up): 20.1 dBm / 12.3 dBm
FEC Events (Down/Up): 0 / 0
CRC Events (Down/Up): 1 / 0
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
HEC Events (Down/Up): 2 / 0
Error Seconds (Local/Remote): 74 / 127


Does this mean I'm now on a 3db Target NM?

Edited by matthewcl375 (Tue 02-Apr-13 13:32:21)

Standard User 4M2
(fountain of knowledge) Tue 02-Apr-13 13:43:51
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Re: Switching to BT - My Experiences


[re: matthewcl375] [link to this post]
 
No your sync time downstream SNRM was 4.9dB (~5dB) and the router stats show 4.8dB (also ~5dB)

But things are looking good - you'll probably still get a some more downstream speed out of the line in due course smile
Standard User XRaySpeX
(eat-sleep-adslguide) Tue 02-Apr-13 14:12:51
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Re: Switching to BT - My Experiences


[re: matthewcl375] [link to this post]
 
I have a suspicion the BTw DLM can set Down Target NM = 4.5 dB, but have never caught it close enough to find out.

1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 20 Meg WBC
Standard User matthewcl375
(committed) Fri 05-Apr-13 01:22:11
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Re: Switching to BT - My Experiences


[re: XRaySpeX] [link to this post]
 
Now the 10 day period has finished, what happens next? I assume the DLM won't be trying any more ways of improving sync speed now
Standard User XRaySpeX
(eat-sleep-adslguide) Fri 05-Apr-13 02:04:19
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Re: Switching to BT - My Experiences


[re: matthewcl375] [link to this post]
 
The 10 day period is just for working out acceptable min speed of line.

DLM runs forever managing your line - the clue is in its title.

You have a good speed. May not be the best but you can live with it. If it improves it is a bonus; if not so what.

Whats throughput like?

1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 20 Meg WBC
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