we have problems with a few G.SHDSL lines and I wanted to ask, if there is a possibility to raise the tolerance for errors on a G.SHDSL line? I found the command "snr margin" and I don't really understand the description for this command. Could you please explain what the commands "snr margin current" and "snr margin snext" do on a Cisco 878 (Cisco 1803). Can it help to make a line more stable? If yes, then how it works and which values should be used.