there have been many such forums but have not helped

[candyd360]

I seriously please please need to rectify this..their internet had workied fine for thi first 4 months or so like up till june 2011 and then it started on my old modem they did something in the settings or something i dont know then it stopped did not disconnect for 2 months and then from september uptill now the problem has not been solved please help

I have a Teracom BSNL WIFI type II modem and i am withing 2 kms range from the BSNL exchange my DSL link is continuously disconnecting AND SNR fluctuates from 25 and 30 to 6 and 12.5...and whenever the bsnl exchange engineers come the internet does not disconnect and the wiring was done by one of their lineman he fixed a splitter directly inside the main electric box in the house because i was having this problem earlier too so he says the wiring is correct there can be no problem with that they tried all other things with their port reset too
the dsl wire is around 6 meters long connected to the router/modem from the telephone socket/plug.
I had got my earlier modem replaced as its wifi was faulty so they gave me this new teracom modem

can someone please help from step by step instructions

i just have one telephone connected in the whole house the BSNL people are not helping at all they are simply saying that
*it cannot be BSNL's fault because the DSL link would have disconnected the moment you get a ring on the telephone so it has not disconnected
*it cannot be wiring problem as if it was wiring problem then you would not have ever got such high 30 db SNR's and whenever they come to check it does not disconnect
DSL goes on both modes i have tried ADSL2+ and G.Dmt

i will give you all the information i can

[meetdilip]

I have a Teracom BSNL WIFI type II modem and i am withing 2 kms range from the BSNL exchange my DSL link is continuously disconnecting AND SNR fluctuates from 25 and 30 to 6 and 12.5

Internet should work fine with those settings provided modem and wiring is good.


whenever the bsnl exchange engineers come the internet does not disconnect

You can ask them to check their logs to verify that the issue is genuine. It can be that they are doing it by purpose too. Check with neighbours.

can someone please help from step by step instructions

This may help

http://www.indiabroadband.net/broadb...ubleshoot.html

[essbebe]

Check your speed here ( twice) Mention Tariff plan speed.
My Broadband Speed - Broadband Speed Tester
Copy/Paste Forum link here.
Check this link for settings. DNS use 8.8.8.8 and 8.8.4.4
Feedback.

[candyd360]

when SNR 20D/S and 23 U/S speed test results DL is 324 and UL is 221-first attempt
and second attempt results DL 257 and UL 393(SNR(Downstream)19.10 dB SNR(Upstream)26.5 dB)
edit at 1.37pm third attempt i got 454 and 393

My tariff plan is upto 4mBps upto 8gb after which reduced to 256 kbps and the above tests were after the 8gb quota was over

There is noone in my building with BSNL except me so cant test that either.

except for step 1 in the troubleshoot guide all steps i have tried i dont understand step 1 coz my SNR is fluctuating everytime the DSL disconnects
and where should i check for isolated parts or joints?

essbebe i did not understand what is meant by this
Copy/Paste Forum link here.
Check this link for settings. DNS use 8.8.8.8 and 8.8.4.4
should i change the DNS in the configuration page? i will create a backup settings and try the google dns ty ! i am supposing it should be changed in the configuration page and not in the network properties since it is a router too

[meetdilip]

Presume you tried all options in the link. Try talking to SDE of your exchange.

[candyd360]

i will try doing that
in the mean time (noob doubt) do i have to change the ip addresses in the DNS CLIENT section or DNS relay section or both?
i read your this post sir dilip *ww.indiabroadband.net/bsnl-broadband/37705-pune-frequent-disconnection.html
my internet is on always on connection and i am trying the google dns servers although its the DSL disconnections..no harm in trying i guess

[meetdilip]

Change the values in TCP/IP properties of your adapter.

" noob " if you ask me is not a good term to name yourself. Humans cannot get all knowledge by birth. Someone wise said " No question is foolish, only answers are ".

[candyd360]

nice saying
it is a router type modem and since i changed it in the configuration page, the overview page showed Primary DNS 8.8.8.8
Secondary DNS 8.8.4.4
as soon as i changed it it worked 2 mins then it dsl disconnected snr became 6 i restarted modem from config page and its connected now so should i change TCP settings and revert back old ip settings in config page?

[meetdilip]

I always make DNS changes in adapter. But not sure how effective it will be.

[candyd360]

okay...

had left the pc on and gone for lunch and now the SNR values are
SNR (Downstream) 5.65 dB
SNR (Upstream) 16.0 dB
so assuming it must have disconnected it usually happens
image attached

[just4kix]

Can you try switching to BSNL DNS (i.e., leave it to auto DNS) instead of using Google DNS?

[candyd360]

It was on auto only....my main problem is loss of dsl link which disconnects i don't suppose dns had got anything to do with it

[maxsteel]

did you tried g.dmt mode in your modem

[candyd360]

Plz read first post carefully insted yes i tried gdmt

[essbebe]

RECAP

REF:
http://www.calcutta.bsnl.co.in/dataoneinstall/mu12.html


Plz read first post carefully instead yes i tried gdmt
1.
Please post as screenshot the page where you have selected GDMT.

"My setting is now on GDMT"would have been better info.
There is difference when you say tried GDMT.
2.
speed:
speed forum link copy/pasted here. Mine Home 750 U/L 512 Kbps.


Recheck your speed on 1st Jan 2012. and post as above.

3.
SNR etc
Your attainable rate and Rate D/L appear same in attachment Post No 10.

My tariff plan is upto 4Mbps upto 8GB......

With this setting you will/may not get the 4 Mbps speed again on First.

Ref : teracom link below.

[candyd360]

thank you for your replies even on such a busy day
==> here are two attached images of gdmt setting

i had tried GDMT as in the menthod in the screenshot for 2 days to check if it disconnected or no and the DSL still disconnected
i will post my speed test results of 1st jan in the format you mentioned
and as maybe seen in the screenshots the SNRs are good and the attainable data rate and D/L have also changed

EDIT @7.30pm disconnected and SNR came down and attainable rate and download have become equal again (attachment 3)

[essbebe]

4.
Now change DNS to 8.8.8.8 and 8.8.4.4
( present DNS both Delhi BSNL)

5.
Download tcp/ip optimizer from speedguide.net.
Now adjust the slider to say 600 Kbps speed.
Select Optimal values.

6.
Tomorrow set to 4 Mbps speed.

Feedback.

[Indranil]

candyd360

Take off your phone receiver and try to notice any noise or cracking sound you are hearing.

[candyd360]

okay so now it shows DNS servers are 8.8.8.8 and 8.8.4.4 i changed them in all three places(network settings, DNS client page, and DNS relay page right?)
as of right now the SNRs are again 6 and 11 dB


@low SNRs
i have now simply changed to 4Mbps in TCP optimizer selected optimal and clicked apply changes modify network adapters is unchecked

*Could DSL disconnect due to a wrong faulty ethernet cable because i have noticed that sometimes after a long time say a few hours the pc has been shutdown and i switch it on...by the time i get the windows XP login screen the DSL disconnects*
Since the bsnl ppl said it must be a voltage issue so i connected my ups to power socket and onthe two sockets of UPS one is to a Spike board with all the computer accessories and other is to the modem adapter...Earlier modem adapter was simply connected to the main power plug and still it used to disconnect many a times when i powered up my CPU

12.32pm 1st jan DSL dced and now the SNR are 29 and 30
and speed result


almost same no change except that attainable rate has risen to 11109Kbps

[essbebe]

Please reply to @Indranil's query also.
Presume ADSL splitter is used and checked Ok.
Inspect the cableRj45 and Rj11 for blackened contacts.
Better get NEW short cables.( the connector points could be intermittent)

UPDATE:
Details about UPS etc now posted by you noted.

What is the Output Voltage marked on adapter ? 12V =D.C say .8 Amp
is this original adapter ?
==================
Your speed data etc seems ok now.
Watch for one or two days and check speed 3 or 4 times to get the graph.

Please Post LATEST Connection status for thread completion.

[candyd360]

no white noise or sound is being heard in either of the rooms...earlier it used to come but after the wiring changes done by their lineman it became fine.
i have tried a small new rj11 cable(it seemed to be visibly better quality as it wasnt those thin inferior quality ones) too and tried it had still disconnected...but i had tested this in the first week of december
i disconnected rj11 to check and then reconnected the SNR went low and attainable rate is like 200kbps higher than download rate but my speedtest results are the same.

snr may not be making much of difference then!

yes original teracom adapter input 150-300 VAC at 50 +- HX
outpur 12v 1A DC.

Immediately after the above post it has disconnected SNR high i refreshed the forum page and started typing this meanwhile again disconnected and SNR again 7 and 12 hardly a change in speed test


and it has started disconnecting every minute now i will have to check the RJ45 cable ...should i opt for a dropwire instead as the last resort? a single wire from my house to their setup in the society?

[just4kix]

This is definitely related to quality of line/port at exchange.

Please also read (this was related to port issue):

My interactions with BSNL

[candyd360]

your post is really helpful however the problem is i am not getting any error messages just DSL link dropouts. I am not paying 1000rs a month for this Crap...if the problems dont get solved i will try the drop wire
youu all are senior repudated members of this forum and if you still insist it being a port problem ill go to the exchange as already my relations are not nice with the exchange people
as said before *** Never argue with an idiot. ***

btw can someone tell me that can DSL be lost due to a faulty ethernet cable as it is an old one and *the only thing that connects the router to my pc which would thus explain its disconnecting whenever CPU powered up* ?

[just4kix]

Item 1:
What I did not write in that thread that I used to get a lot of unstable connections. This happened a couple of weeks before the connection completely broke down. I had few things done:

• changed the wiring from common junction box in society till my home
• had the splitter setup at the entry point
• the BSNL people changed the port at the exchange

Item 2:
If the ethernet cable is faulty, connection from PC to modem will be broken ... intermitently or permanently. But modem internet connection should be all right, especially in PPPoE mode.

On the other hand if internet connection is unstable, the LED indicator will be flickering constantly.

-----------------

There is no point in arguing or fighting with the BSNL people. I do get line problems sometimes. The BSNL people do not understand PPPoE. In PPPoE, connections errors are not displayed on screen but inside the router log (if we turn it on). When in problem and I contact BSNL, first question they ask me is what error I am getting? Error 678? etc.

When they come to my home, they insist on setting up modem in bridge mode to check error. They always tell me first that my modem is not set up correcty completely ignoring the fact that "my incorrect setup" has been working for the last "x" months. But that is how they are are and their things are. You have to prove to them that the problem is at their end.

But before you do that, you should ensure that there is no problem at your end.

[candyd360]

the BSNL people just kept it off from one department to another saying its line fault tech fault earthing issues electrical problems but no solution at all dat is what i meant by ***never argue with an idiot*** this was the closing statement of just4kix interaction with bsnl thread...u may have misunderstood me. in no way do i mean to sound arrogant or stubborn


your points 2 and 3 are done
i cant see any logs even after entering the correct dates...cant see any option to enable them either...the only logs there are those of 3rd jan 1970 which are always the same...weird how do i enable logging?
my wiring was totally done by their own lineman who denies any problem being there inside

splitter at entry point -OK
Port at exchange changed -OK
wiring from junction box till my house -They said they can last thing do is give a direct wire from junction box to my house...change it all the way up to the 10th floor they probably wont so alright tomorrow i am going to the SDE office tell him issues if not solved i am going to quit their service

[candyd360]

Okay so i went with the printouts of disconnected logs straight to the sde of the branch exchange and they start kissing our feet....nw drop wire it is i will post more updates whenever anything happens

[candyd360]

thread solved...they gave one direct big wire from the junction box and its as smooth as cheesse thankyou for all your help!

[just4kix]

Good. Enjoy your broadband.