airtel broadband: connection drops despite copper wire being changed!

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breakyo

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hi :-) members of this forum and moderators, I am using airtel broadband,wi-fi modem : 450 bx1 adsl + routerNumber of computers connected : 2 ( 1 laptop + 1 desktop)laptop connected wirelessly to the modem and desktop wired.current broadband plan : night timings - 1 mbps and day timings 512 kpbpsthe issue i was experiencing since many weeks : drop in connection, the connection would drop, and modem would restart, then after complaining the broadband engineer suggests change of copper wire and it was done, since then the connection has improved no doubt, but I still get logged out of messengers, chat rooms ( not just one, but many chat rooms), so I can be sure the problem is not with one particular chat room, though the modem doesn't restart now. but still there is disconnection atleast 2 times in an hour. which is very annoying because I get logged out of chat rooms and have to re-connect.i think I would like a connection without any disconnections, a stable connection, where I remain connected to chat rooms and messengers and other services :-) so please suggest me where the problem might be and what is the solutionthank you
 
hi :-) members of this forum and moderators, I am using airtel broadband,wi-fi modem : 450 bx1 adsl + routerNumber of computers connected : 2 ( 1 laptop + 1 desktop)laptop connected wirelessly to the modem and desktop wired.current broadband plan : night timings - 1 mbps and day timings 512 kpbpsthe issue i was experiencing since many weeks : drop in connection, the connection would drop, and modem would restart, then after complaining the broadband engineer suggests change of copper wire and it was done, since then the connection has improved no doubt, but I still get logged out of messengers, chat rooms ( not just one, but many chat rooms), so I can be sure the problem is not with one particular chat room, though the modem doesn't restart now. but still there is disconnection atleast 2 times in an hour. which is very annoying because I get logged out of chat rooms and have to re-connect.i think I would like a connection without any disconnections, a stable connection, where I remain connected to chat rooms and messengers and other services :-) so please suggest me where the problem might be and what is the solutionthank you
 
Line attenuation is rather high, but nothing exceptional.Your problem is definitely from the back end.You could double check if you don't have parallel phones which are not filtered.The splitter/ filter should be used on direct line and then phone output should be made parallel. Once you have ensured this then get after Airtel to sort your issue out. Some cordless phones may also create problems with DSL. Disconnect any cordless phones and then see if connection drops ( or remove phone altogether)The more you try the more you will narrow down to the exact cause.:P
 
What part of the wire have they changed? Is there any bleeding of the signal in b/w the exchange to your place? I think they have methods to determine these kind of faults. Contact the CC again with your problem, they'll get the line checked and solve your problem.
 
The first thing to check is whether your ADSL line is going down or not when you have this problem. Have a look in your modem logs to see if this is happening. Let me know and we can proceed further with troubleshooting.

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Also, are you having this problem from both the wireless laptop and from the desktop PC?
 

What part of the wire have they changed? Is there any bleeding of the signal in b/w the exchange to your place? I think they have methods to determine these kind of faults. Contact the CC again with your problem, they'll get the line checked and solve your problem.


Hi Apoorv, thanks for reading my thread and replying :-), I am not sure what part of the wire they have changed, the broadband engineer will arrive in a few mins to determine the fault, will ask him, what part of the wire has been changed.



Line attenuation is rather high, but nothing exceptional.
Your problem is definitely from the back end.
You could double check if you don't have parallel phones which are not filtered.
The splitter/ filter should be used on direct line and then phone output should be made parallel. Once you have ensured this then get after Airtel to sort your issue out.

Some cordless phones may also create problems with DSL. Disconnect any cordless phones and then see if connection drops ( or remove phone altogether)
The more you try the more you will narrow down to the exact cause.:P

Hi there, Mac! :-) . thanks for replying to my post. Well, after lodging many complaints to the airtel helpine (121) I was told it would be checked if the problem is there in the backend. Yes I have checked the splitter is used on direct line and then phone output is made parallel. don't have a cordless phone. I have called up 121 y'day again and the broadband engineer is supposed to come today, to check the problem again. :-)

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The first thing to check is whether your ADSL line is going down or not when you have this problem. Have a look in your modem logs to see if this is happening. Let me know and we can proceed further with troubleshooting.

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Also, are you having this problem from both the wireless laptop and from the desktop PC?

hey there, Coimby. thanks for reading my post and replying. Yes I am having this problem from both the wireless laptop and from the desktop. though after the old copper wire has been replaced by the new one, the disconnections are few and the Dsl light in the modem ( yellow) doesn't flicker when there is a disconnection, but stilll I have a few disconnections. and how do i check whether my ADSL line is going down or not when I have this problem? where are the modem logs located?.
:-)

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What part of the wire have they changed? Is there any bleeding of the signal in b/w the exchange to your place? I think they have methods to determine these kind of faults. Contact the CC again with your problem, they'll get the line checked and solve your problem.

Hey Apoorv, the broadband engineer just arrived at my home to determine the problem, and upon asking what part of the wire has been changed he said " the whole wire from the exchange to the box in your house and from the box to the splitter has been changed and also the line has been checked using a test called SULIM test to determine the quality of the line". and also the INSTRUMENT was replaced by the engineer.

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update : the engineer checked the SNR numbers too, and it was around 18, and then he said he will check the line again because he according to him it should be around 25-26 only then it would be considered "good". anyway, I am posting the snr margin screen grab here again,


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well, i thought I should post the result of my internet connection speed test.

note : current broadband plan : 512 kpbs daytime and 1 mbps night time, my system has latest version of java runtime environment, all active downloads and browser windows were closed before beginning the test, since the speed test may show inaccurate results with a WiFi connection, I made sure my computer is connected to the ADSL modem/router with the Ethernet cable. the time at which this test was done : around 5 pm, sept 12, 2009.
 
I am not sure where your modem logs are - try under Statistics -> WAN, ADSL, ATM ?

Or under 'Diagnostics'.

You would expect the ADSL line to go down (lose sync) if the SNR is not good. But from what you tell me, it looks like the line may not be going down (only the logs can confirm).

If you have a spare modem, then you can quickly rule out any issues with your existing modem itself.

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Also, have you tried removing line filter and testing? The idea is to isolate every component and make sure that the problem does not lie at your end. If we are confident that the problem is not at your end, then we can take it up with the ISP.
 
I am not sure where your modem logs are - try under Statistics -> WAN, ADSL, ATM ?

Or under 'Diagnostics'.

You would expect the ADSL line to go down (lose sync) if the SNR is not good. But from what you tell me, it looks like the line may not be going down (only the logs can confirm).

If you have a spare modem, then you can quickly rule out any issues with your existing modem itself.

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Also, have you tried removing line filter and testing? The idea is to isolate every component and make sure that the problem does not lie at your end. If we are confident that the problem is not at your end, then we can take it up with the ISP.


hi :-). i do not have a spare modem, and the broadband engineer suggests that the problem could not be in the modem. anyways. I looked for the logs but couldn't find it, or maybe i couldn't spot it
statistics > LAN


...

I have connected the modem directly to the line now, and will wait and see if there is any disconnection...removed line filter ( splitter).
 
If you cannot locate the logs then there are two things to try:-1) Ask the broadband engineer for a spare modem so that you can test for a few hours. If the problem still exists then,2) Ask the broadband engineer if he can see your ADSL line losing sync from the ISP end. If your line is not losing sync, then it most likely is NOT an SNR margin issue but rather a 'data flow' problem.So when you have a data flow issue, data transfer on your ADSL line stops briefly resulting in sessions timing out and consequently logging you out of chat etc.And, a data flow problem could mean a faulty DSLAM port at the ISP end - ask the engineer to put you on a different DSLAM port or on a completely different DSLAM.By the way, is the copper taken from a cabinet on the road and fed to your computer room within a PVC pipe?
 

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