Test Your BSNL Broadband Speed

How to fix frequent disconnection of BSNL ADSL Broadband?

SNR-bsnlbrodbandFor having no disturbance in your internet connection, one should have more than 6DB, downstream and upstream SNR. But remember this value is not the standard one. There should be average of 20DB to avoid these repeated disconnections.Meaning of various values is as follows:

SNR Margin: A higher signal to noise ratio will result in less errors.
6bB. or below = Bad – experience intermittent synchronization problems.
7dB-10dB. = Fair
11dB-20dB. = Good
20dB-28dB. = Excellent
29dB. or above = Outstanding

Attenuation Rates: Attenuation is the loss of signal over distance. Unfortunately, dB loss is not just dependent on distance. It also depends on cable type and length of the cable, including location other connection points on the cable.
20bB. and below = Outstanding
20dB-30dB. = Excellent
30dB-40dB. = Very Good
40dB-50dB. = Good
50dB-60dB. = Poor and may experience connectivity issues
60dB. and above = Bad and will experience connectivity issues.

If your line parameter as shown in your Modem is GOOD or above then there is no any problem in Copper pair or line, the problem may be either in Splitter or in Modem itself.

But if the line parameter as shown in your Modem is BAD, then you have to check your line if you can clear some open joint else call to BSNL people or just lodge a complaint on “198”.

  • Large number of joints in either UG Cable (Underground cable) or in between DP to customer premises.This reason will also be checked in above step and if SNR Margin is BAD, then you have to check your line if you can clear some open joint else call to BSNL people or just lodge a complaint on “198”. Here also If your line parameter as shown in your Modem is GOOD or above then there is no any problem in Copper pair or line, the problem may be either in Splitter or in Modem itself. So you should check for that.
  • One important step that you can check for fixing the BSNL broadband frequent disconnection problem is to change the Modulation technique of modem. This can be done by just access your Modem through Modem IP: http://192.168.1.1 as above and go to the ADSL tab under Internet configuration page, in some modem firmware it may be at some other place also, that you have to find it and change the modulation technique to G.dmt by just enable it and Disable all other modulations and save it.
    Gdmt-bsnlbroadbandAfter configuration change you should reboot the modem. This will limit the download speed to around 4.8 Mbps (4984 Kbps) and the upload speed to 207 Kbps. But it will help in stabling the DSL LED in presence of extra impedance also.
  •  I think this article may have solved your issue of frequent disconnection in BSNL broadband. If you have any query regarding this please share with us.


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    4 thoughts on “How to fix frequent disconnection of BSNL ADSL Broadband?”

    1. To my knowledge, in our street only 2-5 users use BSNL and the exchange is 1 Km away from us. Till i face frequent downtime and they haven’t done anything till now to fix it :(

    2. Downstream Upstream
      Line Coding(Trellis): On On
      SNR Margin (0.1 dB): 152 147
      Attenuation (0.1 dB): 145 104
      Output Power (0.1 dBm): -38 -92
      Attainable Rate (Kbps): 23280 715
      is their any problem in these numbers,and why out power is in negative….??? please reply?

    3. I had booked complaints several times to bsnl people. They fix it and after a few hours it returns, additionally, when I use landline I got my voice reverted back to me.

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