SirPeterIII Posted January 18, 2010 CID Share Posted January 18, 2010 Hi, I have a question. On an adsl connection it is important to have a ns margin / voice margin higher then 6. Is there a tool somewere that can calculate the max margin possible? Quote Link to comment Share on other sites More sharing options...
mudmanc4 Posted January 18, 2010 CID Share Posted January 18, 2010 I think you mean "SN ratio " ? If this is so, then this is something that is telling you the line quality. Quote Link to comment Share on other sites More sharing options...
SirPeterIII Posted January 18, 2010 Author CID Share Posted January 18, 2010 SN ratio thats correct. And I see i made another typo. Voice margin is noise margin. I wanted to see what the maximum quality could be. The quality is ok here considering I have voice over IP with a ISDN/annex B SN-marge 8,5 Line Attenuation18,5 / 27,5 So if anyone know a tool Quote Link to comment Share on other sites More sharing options...
Roco Posted January 20, 2010 CID Share Posted January 20, 2010 your ATT looks good , Short line , the SNR is fixed by as it says by the noise on the line , there are tools that can change the SNR , all they do is hoodwink the Dslam at the exchange , 8.5 is a little low , in the UK it's normaly around 12-15 dB , depending on your router there is a tool to raise it to +20db , but that causes a decrease in sync speed , most folk are going the other way to 8-9dB for increased speed , I can haul mine down to 6dB , but the packet loss becomes so high it ain't worth it , another aspect of low SNR can be internal house wiring , Sorry I can't help with voice over IP with a ISDN/annex B , ( no experience ) Quote Link to comment Share on other sites More sharing options...
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