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Internet keeps disconnect/connecting every 10-15 minutes

  1. #1
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    Unhappy Internet keeps disconnect/connecting every 10-15 minutes

    Hi

    I have an unlimited 1Mbps MTNL broadband connection. Since the past one week my internet connection automatically keeps disconnecting/connecting every 10-15 minutes. Numerous customer care calls have been to no avail. MTNL says they'll send a repairman over but they never do.

    Any help would be greatly appreciated.

    Thanks!

  2. #2
    Silver Member axel's Avatar
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    1.Is the DSL light on your modem blinking or stable?

    2.Post your SNR and attenuation value.
    You can find it under DSL router menu(go to http://192.168.1.1/ )
    User ID pass both Admin
    Under ADSL tab you will find those

    3. Check the splitter and the ethernet cable, if you can get a spare check with those.

    Feedback
    You Live What You Love

  3. #3
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    It's not only you. I'm facing the same problem. MTNL customer care is **** and doing nothing.

    I'm considering changing to reliance.

  4. #4
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    Quote Originally Posted by axel View Post
    1.Is the DSL light on your modem blinking or stable?

    2.Post your SNR and attenuation value.
    You can find it under DSL router menu
    User ID pass both Admin
    Under ADSL tab you will find those

    3. Check the splitter and the ethernet cable, if you can get a spare check with those.

    Feedback
    1.The ADSL light is stable when the internet is working but blinks when the internet is reconnecting.
    2.SNR - Downstream(31.5db) ; Upstream(12.0db)
    Attenuation - Downstream(22.0db) ; Upstream(15.0db)
    3.I've checked the cables. They're all working fine.

    Thanks for the prompt reply!

    Quote Originally Posted by Decode141 View Post
    It's not only you. I'm facing the same problem. MTNL customer care is **** and doing nothing.

    I'm considering changing to reliance.
    MTNL's customer care is pathetic! I've had a spell with Reliance too, their customer care wasn't much better either. Try Airtel, my experience with them has been spotless!
    Last edited by apex; 3rd April 2011 at 02:16 PM. Reason: Automerged Doublepost

  5. #5
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    @apex
    Mention modem/model/number.
    You can try: Uncheck ADSL2+ mod mode.
    Recheck snr attn and sync rate.

    Enter Google dns 8.8.8.8 and opendns 208.67.220.220
    in modem DNS page.

    Feedback.

  6. #6
    anandprateek
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    o yeah ur right but mtnl is mtnl n bsnl is bsnl becoz dey ve very bad service...

  7. #7
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    Even I was facing this problem, numerous complaints on 1504 and 198 yielded no results. Finally I sent a email to helpdesk.mumbai@mtnl.net.in and the very next day my connection was back to normal. I suggest you do the same.

  8. #8
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    Quote Originally Posted by essbebe View Post
    @apex
    Mention modem/model/number.
    You can try: Uncheck ADSL2+ mod mode.
    Recheck snr attn and sync rate.

    Enter Google dns 8.8.8.8 and opendns 208.67.220.220
    in modem DNS page.

    Feedback.
    I changed the DNS addresses, still the same problem. I am on the "G.dmt" modulation.
    Modem - MTNL T-KD 318-EUI
    I use a D-Link DI-524 router, in case this info may be useful.

    SNR - Downstream(30.5db) ; Upstream(12.0db)
    Attenuation - Downstream(22.0db) ; Upstream(15.0db)
    I guess the sync rate or "data rate"(as given in my modem) are the same, so here you go:
    Data Rate - Downstream(1152kbps) ; Upstream(512kbps)

    Thanks!

    Quote Originally Posted by glavinstone View Post
    Even I was facing this problem, numerous complaints on 1504 and 198 yielded no results. Finally I sent a email to helpdesk.mumbai@mtnl.net.in and the very next day my connection was back to normal. I suggest you do the same.
    Thanks a lot for the tip. Seems like that's the only option I'm left with, guess I'll have to give that a shot.
    Last edited by apex; 3rd April 2011 at 11:40 PM. Reason: Automerged Doublepost

  9. #9
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    Instead of saying "same problem" you could have mentioned that disconnection occurs now also every 10 or 15 minutes. I had to read the thread from beginning!!

    Confirm you are not using "DIALER" mode.
    If so change to PPPoE mode (and enter UserID/PW
    in WAN page of modem).
    adsl2+
    SNR Margin (dB): 32.4 28.2
    Attenuation (dB): 19.0 10.0
    Output Power (dBm): 11.6 0.0
    Attainable Rate (Kbps): 22904 876
    Rate (Kbps): 2042 507
    Confirm the disconnection is not on WIFI side. Reposition
    wifi router at a higher height.
    still no improvement call BSNL CC.

  10. #10
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    @essbebe
    Oh. My bad. Thank you for your patience though.
    I'm on the PPPoE LLC mode. Disconnection is not from the WIFI side. I'm still having disconnections every 10-15 minutes.
    If MTNL customer care would have been any helpful to begin with, I wouldn't have posted on this forum. Haha!
    Thanks for your help.

  11. #11
    The Wizard meetdilip's Avatar
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    1.Check if your connection follows this diagram



    Bypass splitter and connect directly to the modem and check.

    2. Try with another modem (check if you can get your friends' modem for an evening). If the problem persists, it may be a common issue.
    iL6>tushar likes this.

  12. #12
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    @apex


    If MTNL customer care would have been any helpful to begin with, I wouldn't have posted on this forum. Haha!

    Members try to give additional information,
    to solve the broadband problems, which many new members may not be aware
    For instance difference about Sync Rate and Rate was
    mentioned about which you appear to be ignorant.

    See the chain;
    MTNL Exchange equipment===cablequality (distance)===Junction Box===cable to your house (disrance === Wiring in your house=== adsl box==>>
    quality/condition of cables===>> modem used====>>
    speed of Broadband connection===..>>> etc.
    if you want to shorten the route , go for a wifi broadband connection..

    wifi ( say 3G) ~~~====>>> system !!!!

    Sometimes you may be in luck and get a helpful CC person, who can interpret the feedback you give. Details you might have obtained here in this forum!

  13. #13
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    @meetdilip

    My connection does follow that diagram. I connected the cable directly to the modem as you told me but the recurrent internet disconnection still persists. I'll try with a new modem & get back to you. A friend of mine living nearby just got a new 512kbps unlimited connection very recently & he's going through the exact same problem as mine. Could it be that MTNL is doing the frequent internet resets from their end?

    @essbebe

    I still didn't understand the difference between Sync Rate & Rate. Could you explain that to me again?
    So I guess longer the chain more the risk of an unstable connection. And I just got lucky! Contacted an MTNL internet repairman, said he'll come with a lineman soon to look into the problem. Fingers crossed!

  14. #14
    The Wizard meetdilip's Avatar
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    What exactly is happening ? Does your modem restart ? Means does it show " cable unplugged " ? Or just disconnection ?

    I think it is either a line issue or a modem fault. You will know once you use another modem.

  15. #15
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    @meetdilip
    The modem doesn't restart. Only the internet disconnects & reconnects by itself. It does this approximately every 10-15 minutes.

  16. #16
    The Wizard meetdilip's Avatar
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    Oh, it could be something with MTNL line or a modem fault. Any luck with an alternate modem ? I just today got my modem replaced.

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    have the same problem, of frequent disconnections every 10-15 mins, since last 4-5 days...


    The ADSL light is stable when the internet is working but blinks when the internet is reconnecting.

    SNR - Downstream(11.7db) ; Upstream(6.8 db)

    Attenuation - Downstream(2.0db) ; Upstream(5.9db)

    I've checked the cables. They're all working fine.


    My Splitter connection, and all other wiring is proper... it has been working well since months, only since the last 4-5 days it has been working this way...


    also my phone line is proper, since there is no static or any disturbance.


    infact it has been working this way ever since Sunday ! ...when they said unlimited customers would get 2 Mbps ... I think their servers got overloaded or something.

    'cause I think ever since that day my signal strength has decreased... it went from 30 to 21, and since 3-4 days I've been getting only 11 db, it sometimes climbs to 21, but never to 30.

  18. #18
    Silver Member axel's Avatar
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    Quote Originally Posted by iluvnorp View Post
    have the same problem, of frequent disconnections every 10-15 mins, since last 4-5 days...


    The ADSL light is stable when the internet is working but blinks when the internet is reconnecting.

    SNR - Downstream(11.7db) ; Upstream(6.8 db)

    Attenuation - Downstream(2.0db) ; Upstream(5.9db)



    You phone line is bad SNR should be 30 or more to give a stable connection.And thats why your DSL is blinking ,ask the lineman to check the line.
    You Live What You Love

  19. #19
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    but the ping on speedtest is normal shows about 70~80 ms

    also the phone line is clear with no static / disturbance.


    could it still be the SNR issue ?

  20. #20
    Silver Member axel's Avatar
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    If the SNR is low and DSL blinking it has to be line fault

    You Live What You Love

  21. #21
    The Wizard meetdilip's Avatar
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    Your SNR is poor, get your line checked by the line man. Ask him to replace the line without joints and non insulated parts. Better deal it at the line man level. If approached at exchange, they will try to evade it by lame excuses. Replace the line and check the SNR values. Make sure they fall in the admissible limit. Also in the modem, switch to GDMT instead of ADSL2.

  22. #22
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    upon changing to GDMT , my net went ballistic ! ...attenuation spiked to 19.6 and net started reconnecting every 3-4 seconds... so switched it back to ADSL2

    shall try to get in contact with a line man,

    only thing is how ? ...I don't have the name or number of the line men in my area.


    last time had complained on 198 , and selected telephone problem instead of broadband,
    only then a lineman call me...


    also the thing is, how do I explain him the problem ? ...I doubt he will understand SNR as such...

    they only check if line has disturbance or not, but my phone line is crystal clear, so don't know how to explain it to him or if he'll even bother to check it then. . .

  23. #23
    The Wizard meetdilip's Avatar
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    Call your local exchange and ask for his number. Tell him that you want a clean line, no joints or rusted parts, areas without insulation etc.

  24. #24
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    @meetdilip

    Sorry for the late reply. My internet stopped working completely & the landline went dead. After a couple of complaints, finally a broadband guy came who said that there was a problem in the line, followed by a lineman coming who said that he found some "earthing" somewhere in the line & had changed a part to fix it. No fault in the modem. The internet is working all fine, for now. Here are the values-
    SNR - Downstream(35.0dB) ; Upstream(14.0dB)
    Attenuation - Downstream(19.0dB) ; Upstream(12.5dB)

    Thanks a lot for your help guys!

  25. #25
    Silver Member axel's Avatar
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    You're always welcome...


    P.S. Now your SNR is good and you have a steady line,

    So, happy hunting...
    You Live What You Love

  26. #26
    The Wizard meetdilip's Avatar
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    Congrats Apex. Happy browsing.

  27. #27
    I post when neccessary rishabh25's Avatar
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    i amm facing same disconneting problem abd i am getting :

    SNR margin : 16.0db(downstream) 12.0db(upstream)

    Line Attenuation: 27.5db(downstream) 16.0db(upstream)

    i am still getting discnneting problems

  28. #28
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    Quote Originally Posted by meetdilip View Post
    Your SNR is poor, get your line checked by the line man. Ask him to replace the line without joints and non insulated parts. Better deal it at the line man level. If approached at exchange, they will try to evade it by lame excuses. Replace the line and check the SNR values. Make sure they fall in the admissible limit. Also in the modem, switch to GDMT instead of ADSL2.
    ARE U SURE THAT EFFECTS IT
    mine shows this
    SNR Margin : 2.9 15.7 db
    Line Attenuation : 51.0 28.7 db

    but it worked for almost 2 years now i get disconnetion every 4 mins
    but in morning internet works many times and soeed it get is 200 kbps plan is for 320 kbps
    but i am fed up of mtnl as in night it not works after 11 pm many times

  29. #29
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    HOW to change mine ip range from 120 to 59
    like i am provided ip address with 120.x.x.x
    but can i change that to 59.x.x.x

  30. #30
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    why do you want to change IP range, if you are on dynamic IP luck and Static IP depend upon your location and ip range provided by broadband department.
    Quote Originally Posted by aks020 View Post
    HOW to change mine ip range from 120 to 59
    like i am provided ip address with 120.x.x.x
    but can i change that to 59.x.x.x

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