Availability of teleconferencing services may vary between vendors. Common access options and features are listed below:
Access options:
| Dial-Out or Operator-Dialed | Each participant is called prior to the start of the meeting. |
| Dial-In, Call-In, Toll free and Reservationless Voice Conferencing | Participants dial into the conference from wherever they are. Types vary and may be billed to the caller or charged to a predetermined toll free number. |
| Mixed Mode | A combination of methods used to connect participants and bill for conferencing services. |
Features:
| ASAP | For conferences that need to be arranged quickly. |
| Audio Bulletin Board | Replays a conference, message or press release. |
| Availability Anytime | 24 hours a day / 7 days a week. |
| Conferencing Monitoring | A conference coordinator can stay on the line to monitor and assist. A coordinator is generally available if not on the line. |
| Conference Taping | Preserves your conference on audiocassette. |
| Costumer Reference Codes | Identifies calls listed on the conference invoices. |
| Entrance Announcement | Participants entering the conference are announced. |
| Listen Only | Allows some participants to have 'listen only" capability. |
| Master List | The conference center can keep a list of all participants on file. |
| Multi-Point Fax | Faxes information to participants prior to the conference. |
| Music on Hold | Provides music prior to the start of the conference. |
| Participant Fax List | Faxes a lists of participants to the conference chairperson after the conference. |
| Participant Notifications | Provides advance notice to participants. |
| Polling | Surveys participants via touch-tone keypads. |
| Question & Answer Sessions | Conducted without interruptions. |
| Roll Call | Taken so you know who is on line. |
| Secured Call | Locks-out additional participants from joining the conference. |
| Standing Reservations | Made for regularly scheduled, recurring conference call. |
| Sub Conferencing | Allows designated callers to speak privately within a conference call and then be returned to the main call. |
| Tone In | Heard as each participant enters into the conference. |
| Transcription | Provided on either paper or diskette. |
| Translation Services | Offered for foreign languages or dialects. |