Conference Calls

Definition of Conference call
A conference call is a telephone call in which the calling party wishes to have more than one called party listen in to the audio portion of the call. The conference calls may be designed to allow the called party to participate during the call, or the call may be set up so that the called party merely listens into the call and cannot speak. It is often referred to as an ATC (Audio Tele-Conference).

Three-way calling is available (usually at an extra charge) for many customers on their home or office phone line. To three-way call, the first person one wishes to talk to is dialed. Then the Hook flash button (known as the recall button in the UK and elsewhere) is pressed and the other person's phone number is dialed. While it is ringing, flash / recall is pressed again to connect the three people together. This option allows callers to add a second outgoing call to an already connected call. (Wikipedia)

How do conference calls work?
There is 2 main type conference calls
1. MeetMe conferencing : each participant dials one number
2. ad hoc conferencing : moderator calls each participant

Conference calls connect to a "conference bridge" (a specialized type of equipment that links telephone lines). Many Companies commonly use a specialized service provider who maintains the conference bridge.

Telephone conferencing systems usually require a login and personal identification number (PIN) to access the system. Participants dial to access the meeting or conference call. Users get confidential and proprietary information when accessing conference call system using PIN

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