An embodiment of this invention is about a method and a system for determining which line is causing noise based on peer feedback. Instead of relying on special monitors or algorithms to determine which line is causing the noise, the participants of the call are paired up and asked to identify themselves and to observe the other parties audio for line noise. One system capitalizes on the fact the ability of the caller to determine if the line is producing noise is in most cases far superior to that of the conference system. One method does not require evaluation to be done by the "controlling leg" (i.e. the moderator). That is, there is no need for a centralized authority which makes the decisions on line noise. Instead, each participant is asked to evaluate another participant.