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Standard User chainsaw
(learned) Thu 10-May-07 08:44:47
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Downstream speed fluctuations?


[link to this post]
 
I have been on Max now for 1 week.

It started at 2.5mb but yesterday it got down to 1mb. This morning after rebooting it is nearly 3mb!

Is this normal to habe such a difference in speeds on ADSL2?

When my speed is low, should I reboot?

Edited by chainsaw (Thu 10-May-07 08:46:27)

Standard User Unicast
(regular) Thu 10-May-07 11:36:44
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Re: Downstream speed fluctuations?


[re: chainsaw] [link to this post]
 
Depends what speed your synced at.

If the router reports a lower than previously seen speed, then a reboot will bring you back up to speed.
Standard User chainsaw
(learned) Thu 10-May-07 12:46:48
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Re: Downstream speed fluctuations?


[re: Unicast] [link to this post]
 
Is this normal then? Should I just reboot when it is a bit slow?


-----------------------------------
I am approximately 3.85km from the exchange straight line distance)


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Standard User Unicast
(regular) Thu 10-May-07 13:14:05
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Re: Downstream speed fluctuations?


[re: chainsaw] [link to this post]
 
Hard to say what's normal, esp with you being so far from the exchange.

What are your router stats?
Standard User chainsaw
(learned) Thu 10-May-07 13:19:15
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Re: Downstream speed fluctuations?


[re: Unicast] [link to this post]
 
Right at the moment:

/usr/sbin/adslctl: ADSL driver and PHY status
Status: Showtime Channel: INTR, Upstream rate = 768 Kbps, Downstream rate = 3040 Kbps
Link Power State: L0
Mode: G.DMT
Channel: Interleave
Trellis: ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 6.6 13.0
Attn(dB): 57.0 31.5
Pwr(dBm): 18.4 12.5
Max(Kbps): 3360 1088
Rate (Kbps): 3040 768
G.dmt framing
K: 96(0) 25
R: 16 16
S: 2 8
D: 64 8
ADSL2 framing
MSGc: 1 1
B: 96 25
M: 2 8
T: 1 1
R: 16 16
S: 2.1649 8.6153
L: 776 208
D: 64 8
Counters
SF: 992208 992206
SFErr: 19 38
RS: 33735088 8433751
RSCorr: 200286 496
RSUnCorr: 75 0

HEC: 15 26
OCD: 0 0
LCD: 0 0
Total Cells: 120937092 0
Data Cells: 2562820 0
Drop Cells: 0
Bit Errors: 0 0

ES: 100 0
SES: 93 0
UAS: 23 0
Total time = 4 hours 41 min 41 sec
SF = 992208
CRC = 19
LOS = 120
LOF = 0
ES = 100
Latest 1 day time = 4 hours 41 min 41 sec
SF = 992208
CRC = 19
LOS = 120
LOF = 0
ES = 100
Latest 15 minutes time = 11 min 41 sec
SF = 41227
CRC = 0
LOS = 10
LOF = 0
ES = 7
Previous 15 minutes time = 15 min 0 sec
SF = 52989
CRC = 0
LOS = 0
LOF = 0
ES = 0
Previous 1 day time = 0 sec
SF = 0
CRC = 0
LOS = 0
LOF = 0
ES = 0
15 minutes interval [-30 min to -15 min] time = 15 min 0 sec
SF = 52931
CRC = 0
LOS = 4
LOF = 0
ES = 3
15 minutes interval [-45 min to -30 min] time = 15 min 0 sec
SF = 52930
CRC = 1
LOS = 5
LOF = 0
ES = 4
15 minutes interval [-60 min to -45 min] time = 15 min 0 sec
SF = 52931
CRC = 0
LOS = 13
LOF = 0
ES = 9


best speed yet as last night is was 1340


-----------------------------------
I am approximately 3.85km from the exchange straight line distance)
Administrator MrSaffron
(staff) Thu 10-May-07 13:59:16
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Re: Downstream speed fluctuations?


[re: chainsaw] [link to this post]
 
Keep an eye on Rate (Kbps): 3040 768

if this drops as the sun sets then look at the wiring in the property, in particular trying from the test socket at the master socket when things are bad, and resolving issues by fitting an ADSL faceplate and dedicated extension or removing the ring wire.

A sync of 3040Kbps is fairly OK for a 57dB attenuation line, so just a case of trying to keep this speed when the sun sets


Andrew Ferguson, [email protected]
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 chainsaw
(learned) Thu 10-May-07 15:30:36
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Re: Downstream speed fluctuations?


[re: MrSaffron] [link to this post]
 
The test socket didn't make a real difference.

My SNr has dropped night now to 4.9 which I know is poor


-----------------------------------
I am approximately 3.85km from the exchange straight line distance)
Standard User Deso
(committed) Sat 12-May-07 09:22:59
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Re: Downstream speed fluctuations?


[re: chainsaw] [link to this post]
 
Your SNR level seems to be the important number on Sky (Whether this is an LLU thing I'm not sure).
You need to keep it at 7 or more ideally or, in my experience, you will lose your internet connection.
If it drops below 7 you need to reboot your router and it will find a better level,although your sync speed will drop.
Try Skyuser.co.uk as there is a lot of info about it on there which should explain/help you sort it out.

Neil

EX E7even 1Meg Connection. Now I have a proper connection. (Or do I?)
If only Carlsberg did broadband.
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