Please tell me what I can do to improve the quality of the sound on the conference?

For optimal sound quality please refrain from using speakerphones, headsets, and Bluetooth devices. Sometimes hanging up and dialing back in will yield a better connection from your device as well. Our lines are hard-wire lines that only reproduce the sound put through the speaker and they do not produce echoes or static on the lines. In order to eliminate the echo or noise on the line, you as the host of the call can press *5, in order to mute callers.