Companies commonly use a specialized service provider who maintains the conference bridge, or who provides the phone numbers and PIN codes that participants dial to access the meeting or conference call. These service providers can often dial-out to participants, connecting them to call and introducing them to the parties who are on-the-line. The operators can also take additional information such as question and answer details and also enable and disable advanced conferencing features such as muting lines, muting participants and enabling a recording feature.