MTNL triband intermittent disconnection

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raksrules

Oracle
I am facing this issue everytime i use my MTNL triband connection. It just disconnects intermittently and reconnects

Its like ipconfig /release and ipconfig /renew happening on its own and will.

Although it is not a concern with torrent downloads but HTTP/FTP downloads (not using download manager) tend to get incomplete and in most of the cases i need to restart them if this disconnection happens in the middle of download. :(

Any specific reason and solution to it ???
 
Yeah same is happening with me , MTNL says the problem might be with line which i dont believe
 
lol same here
changing the wiring helped most of the people with this problem but mine didnt get fixed also try creating a virtual server help specially for bit torrent client
 
Post your SNR values

It must be above 12 for good connectivity

By looking at your case I guess it should lie in 3-5 range

I had the same problem , but it got fixed last month by itself . The problem lay in Junction box wiring tied to the post from where wire is coming

Try changing to G.dmt mode for a little improvement
 
Anubis said:
Post your SNR values

It must be above 12 for good connectivity

By looking at your case I guess it should lie in 3-5 range

I had the same problem , but it got fixed last month by itself . The problem lay in Junction box wiring tied to the post from where wire is coming

Try changing to G.dmt mode for a little improvement

SNR values ??? :S
Where do i get that from ????
 
raksrules said:
SNR Margin -> Downstream - 8 / Upstream - 13
Line Attenuation -> Downstream - 36 / Upstream - 20

Earlier

SNR Margin -> Downstream - 6 / Upstream - 9
Now

SNR Margin -> Downstream - 34.1 / Upstream - 25.3

SNR
SNR means Signal to Noise Ratio. Simply put divide the Signal value by Noise Value and you get SNR. You need high SNR for a stable connection. In general, a higher signal to noise ratio will result in less errors.
6bB. or below = Bad and will experience no line synchronisation and frequent disconnections
7dB-10dB. = Fair but does not leave much room for variances in conditions.
11dB-20dB. = Good with little or no disconnection problems
20dB-28dB. = Excellent
29dB. or above = Outstanding

Note that most modems display value as SNR Margin and not pure SNR.

SNR Margin
You can think of SNR margin as the measure of quality of the service; it defines the ability of the service to work error free during noise bursts.

This is a measure of the difference between your current SNR and the SNR that is required to keep a reliable service at your connection speed. If your SNR is very close to the minimum required SNR, you are more likely to suffer intermittent connection faults, or slowdowns. You need a high margin to ensure that bursts of interference don't cause constant disconnections.

With traditional broadband, the higher the SNR Margin, the better. With MaxDSL the faster speeds are only available as a trade-off with what your line can reliably support. The Target SNR Margin is about 6dB. If your broadband is provided through an LLU (Local Loop Unbundled) network, this target SNR Margin may be as high as 12dB.

Line Attenuation
In gerneral, attenuation is the loss of signal over distance. Unfortunately, dB loss is not just dependent on distance. It also depends on cable type and gauge (which can differ over the length of the cable), the number and 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
Line attenuation also affects your speed.
75 dB+: Out of range for broadband
60-75 dB: max speed up to 512kbps
43-60dB: max speed up to 1Mbps
0-42dB: speed up to 2Mbps+

SNR Margin and Line Attenuation - What do they mean?
 
dinjo said:
I couldn't find the Status Page ?

What modem you are using ???
Mine is Dlink DSL - 502T

Once you go to 192.168.1.1 then go to status tab and then select ADSL from the left side and you will get the SNR, line attenuation details etc.
 
I'm using GLB-502T, Leave the SNR part, D-link official support too suggest me that my connections- MTNL- SNR is high & it requires to set low to get uninterrupted service, I didn't do any changes (in-fact I don't know how to do :bleh:)

One visit to Top Engineer/ Head of internet department & भैया ओल इज वेल :P
 
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