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Standard User brandscill
(newbie) Wed 25-Jul-12 13:00:44
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Constant Disconnects


[link to this post]
 
Hello

I just had my post office broadband installed on a new line last Friday and ever since I've had non stop disconnects.

Below are the line stats, can someone tell me if there is anything there that would point to the issue?

I have seen posts that the supplied Zyxel Modem doesn't cope well with long lines

Thanks

noise margin upstream: 18.0 db
output power downstream: 19.5 dbm
attenuation upstream: 29.5 db

noise margin downstream: 6.0 db
output power upstream: 12.5 dbm
attenuation downstream: 61.0 db


Speed:

http://www.speedtest.net/result/2082870207.png

This is the exchange I'm on

http://www.samknows.com/broadband/exchange/SDSLNFL

Thanks in advance smile

This was posted in the post office broadband but someone suggested I repost it in the general area
Standard User XRaySpeX
(eat-sleep-adslguide) Wed 25-Jul-12 13:47:51
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Re: Constant Disconnects


[re: brandscill] [link to this post]
 
In reply to a post by brandscill:
noise margin upstream: 18.0 db
output power downstream: 19.5 dbm
attenuation upstream: 29.5 db

noise margin downstream: 6.0 db
output power upstream: 12.5 dbm
attenuation downstream: 61.0 db
Are out of context and therefore useless w/out the corresponding connection speeds from the router.

Speedtests are only of secondary significance.

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 19 Meg WBC
Standard User brandscill
(newbie) Wed 25-Jul-12 15:05:31
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Re: Constant Disconnects


[re: XRaySpeX] [link to this post]
 
Apologies

Upstream Speed: 448 kbps
Downstream Speed: 5184 kbps

This is the model of the router supplied by the post office

ftp://ftp.zyxel.com/AMG1202-T10A/AMG1202-T10A_001.pdf

The BT wholesale number checker says the following

For Telephone Number 01403****** on Exchange SLINFOLD

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 1Mbps. However due to the length of your line the 1Mbps service may require an engineer visit who will, where possible, supply the broadband service.


Our test also indicates that your line currently supports an estimated ADSL Max broadband line speed of 1Mbps; typically the line speed would range between 1Mbps and 3.5Mbps.

The actual stable line speed supportable will be determined during the first 10 days of use. This speed may change over time, to ensure line stability is maintained.

Edited by brandscill (Wed 25-Jul-12 15:09:24)


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Standard User XRaySpeX
(eat-sleep-adslguide) Wed 25-Jul-12 15:19:17
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Re: Constant Disconnects


[re: brandscill] [link to this post]
 
That is surprisingly fast but otherwise OK.

Now run http://www.speedtester.bt.com/ & post results.

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 19 Meg WBC
Standard User brandscill
(newbie) Wed 25-Jul-12 15:27:05
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Re: Constant Disconnects


[re: XRaySpeX] [link to this post]
 
Here you go

Download speedachieved during the test was - 1.81 Mbps
For your connection, the acceptable range of speeds is 0.4 Mbps-2 Mbps.
Additional Information:
Your DSL Connection Rate :5.18 Mbps(DOWN-STREAM), 0.45 Mbps(UP-STREAM)
IP Profile for your line is - 2 Mbps
Standard User XRaySpeX
(eat-sleep-adslguide) Wed 25-Jul-12 16:12:04
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Re: Constant Disconnects


[re: brandscill] [link to this post]
 
Try plugging into test socket and see if that improves things. Post the same stats as before.

Have you removed ring wire? See http://www.kitz.co.uk/adsl/socket.htm

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 19 Meg WBC
Standard User Zarjaz
(knowledge is power) Wed 25-Jul-12 17:34:46
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Re: Constant Disconnects


[re: brandscill] [link to this post]
 
That is a very high sync rate for what, if the router is reporting correctly, is a very long line. Did you try in the NTE test jack, and if the same there, do you have a nieghbour whose router you could borrow, just to see if sync is stable with that ?

Standard User XRaySpeX
(eat-sleep-adslguide) Wed 25-Jul-12 17:43:28
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Re: Constant Disconnects


[re: Zarjaz] [link to this post]
 
Router is reporting it correctly as it's confirmed by BT Speedtester.

But is it possible that router is negotiating it wrongly?

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 19 Meg WBC
Standard User Zarjaz
(knowledge is power) Wed 25-Jul-12 17:48:50
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Re: Constant Disconnects


[re: XRaySpeX] [link to this post]
 
Pass.

I wonder if, since it's a new install, the 'constant disconnects' are DLM doing it's thang ?
That said, if it were, wouldn't the 6db snr have changed ??

Standard User brandscill
(newbie) Wed 25-Jul-12 18:37:07
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Re: Constant Disconnects


[re: Zarjaz] [link to this post]
 
Tried it and it's all the same

The socket is brand new with no extensions.

Sadly no neighbours around here only an old care home. Really am flummoxed as to the problem. Short of a few people saying online that the Zyxel router we have doesn't play nice with long lines I can't think of much else to try.

Luckily had a mini breakthrough with the Post Office who are sending a guy out Tuesday coming to take a look at everything. Hopefully he will try a few things then come and see it hasn't made any difference and perhaps suggest it's the fail router?
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