A telephone networking system that enables a group of learners to interact simultaneously with the teacher and with each other. Used in some forms of distance...

Telecommunication between more than two persons (either audio or visual) that enables group discussion to occur. Used in some distance education...

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...