Can I restrict conference audio to computers (VoIP)? Kim Smith January 24, 2018 13:41 Follow To allow only computer (VoIP) access to session audio, 1) click on the Advanced Settings menu and 2) deselect "Enable phone when audio starts." 3) Then click on Start Audio. This sequence of steps creates a VOIP-only meeting. Have more questions? Submit a request 0 Comments Please sign in to leave a comment.