Is low SNR Margin casuing unstable net?

[authoritah]

I face a lot of problems with my BSNL net stability ( plan is the 1 Mbps till 6 GB then drops to 512 Kbps unlimited one). Posted some stats from modem.
The SNR Margin I think is too low and seems to me that might be the cause of unstable internet.
Any other problems you guys see and what the solution to increasing SNR Margin?
I've had the lineman change the line a few times but the SNR Margin seems to be the same and he has no clue how to fix it.
Thanks

 

[uumeshh]

I've had the lineman change the line a few times but the SNR Margin seems to be the same and he has no clue how to fix
How did you manage that? I have complained till regional manager and at pgportal but my line hasn't been changed.

 

[authoritah]

Went to the exchange, found the lineman for my area. Took his phone number and asked him to come and change the line. He obviously didn't come. Called him a few times and he finally showed up.
On another note, what site can I use to upload pics to this site? Its not accepting imageshack for some reason. I'll upload the pic directly to the OP, should be easier to read that way

 

[uumeshh]

Use imgur.com

 

[authoritah]

Thanks.
Used the same site and fixed the OP last night itself, thanks anyway.
Changed modulation to ADSL(G.DMT) from ADSL 2. SNR Margin picked up.
Was facing some disconnections though last night. Seems stable now, downloading speed has also picked up. Lets see if this fixes the problem.
Googled and found lots of different type of configuration settings for BSNL Broadband on TP-Link wi-fi modems but all of them lead to a high increase in CRC which was maybe leading to high errors. SNR Margin would drop from 18 db to 0.1 db and then the ADSL link would conk off. Can someone please give me some reliable configuration settings?
Think the issue might be with my modem settings as right now seems like just changing the modulation fixed a few things.