India Broadband Forum
Low SNR margin
This is a discussion on Low SNR margin within the BSNL broadband forums, part of the Broadband Internet Service Providers category; I am using BSNL combo 500 plan. I have checked my modem's stats and it shows that: SNR margin(db): 5.4 ...
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09-29-09, 08:45 PM
| #1 |
| Junior Member  Join Date: Sep 2009 Location: Punjab Age: 18
Posts: 57
Rep Power: 1   |  Low SNR margin I am using BSNL combo 500 plan. I have checked my modem's stats and it shows that: SNR margin(db): 5.4 downstream : 17.5 upstream Attenuation : 49.0 downstream : 28.9 upstream I have a new connection and getting a good speed(~1.9Mbps) Can these values effect my downloading speed or connectivity in future? Any comments will be helpful. Thanx in advance |
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09-29-09, 09:21 PM
| #2 |
| Silver Member Join Date: May 2008 Age: 27
Posts: 314
Rep Power: 2 |  Your SNR downstream margin(db) is very low 5.4 It will good if it's show 10db. poor SNR cause of frequent disconnect of DSL Keep cheaking the SNR. If it will show some time 10db or above to 30db then it's good. |
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09-29-09, 09:31 PM
| #3 |
| Platinum Member  Join Date: Jan 2009 Location: Chennai
Posts: 809
Rep Power: 3 | Signal to Noise Ratio (SNR) The SNR should be higher than 20 though anything above 10 is just enough. The Attenuation should be as low as possible. But if the attenuation starts going higher than 40 and SNR going down below 10, it is time to complain about the line condition.  Check the Wires The leading-in cable (drop wire) from the junction box (DP box) to your house should be as straight as possible, should be of a single length without any joints. The wires should not be coiled anywhere and should be away from electrical lines. With these types of irregularities, i.e with joints or coiled or near power cables, your phone might work fine but the DSL link may not hold and work satisfactorily. |
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09-29-09, 09:43 PM
| #4 |
| Silver Member Join Date: May 2008 Age: 27
Posts: 314
Rep Power: 2 | Thank you very mutch deepmohan  |
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09-29-09, 09:51 PM
| #5 | |
| Platinum Member Join Date: Jan 2009 Location: Chennai
Posts: 809
Rep Power: 3 | Quote:
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09-29-09, 09:54 PM
| #6 |
| Junior Member Join Date: Sep 2009 Location: Punjab Age: 18
Posts: 57
Rep Power: 1 |  First of all thanks for reply. As you know my SNR margin is low, but i am not suffering any disconnections.Why? What should i do if i want to increase by SNR margin? and also please tell me "What is actually SNR margin?" |
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09-29-09, 09:58 PM
| #7 |
| Platinum Member Join Date: Jan 2009 Location: Chennai
Posts: 809
Rep Power: 3 | Refer this SNR Margin and Line Attenuation - What do they mean? Guides that you may find useful (Guides that you may find useful in this section) OR Just Goooogle it you can fine lots of articles. Last edited by deepmohan; 09-29-09 at 09:58 PM. Reason: Automerged Doublepost |
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09-30-09, 08:53 AM
| #8 |
| Junior Member Join Date: Sep 2009 Location: Punjab Age: 18
Posts: 57
Rep Power: 1 | As you know my SNR margin is low & line attenuation is high, so should i make a complaint to BSNL service centre? What will they actually do? Actually my line wire is new(as i have new connection), so can they help me sort it out?  BSNL |
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10-01-09, 12:09 AM
| #9 | |
| Platinum Member Join Date: Jan 2009 Location: Chennai
Posts: 809
Rep Power: 3 | Quote:
 cutehkrs----- -----BSNL | |
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10-01-09, 09:57 PM
| #10 |
| Junior Member Join Date: Oct 2009
Posts: 3
Rep Power: 0 | hey i just checked my attenuation for modem its 51.5 db for download stream and 26.9 db for upload stream.what do i do... |
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10-02-09, 12:01 AM
| #11 | |
| Platinum Member Join Date: Jan 2009 Location: Chennai
Posts: 809
Rep Power: 3 | Quote:
The leading-in cable (drop wire) from the junction box (DP box) to your house should be as straight as possible, should be of a single length without any joints. The wires should not be coiled anywhere and should be away from electrical lines. With these types of irregularities, i.e with joints or coiled or near power cables, your phone might work fine but the DSL link may not hold and work satisfactorily. Complain about your line condition to the lineman concerned ask them to check out of faults like loops... etc. | |
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| low, rate, snr |
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