Our company has several conference call lines with Eagle Teleconferencing. I am a speaker on all of those conference call lines. I do recommend if you are a speaker or moderator that you use lecture mode. This is great for noisy conference calls. All you do is press *5 on your phone and this mutes all the participants in the conference call. This is great because you can speak without all that noise but you can only use this feature if you are a speaker or moderator. Then to take it out of lecture mode you just press *5 again. You also have to make sure that you use speaker or moderator code when dialing into the conference call line. Great feature for noisy conference calls!