Effective Teleconferencing For Effective People - by John Thompson

The notion is to allow a group (three or more people) interactive communication through an electronic avenue between people at several locations

A Look At Conference Call Services - by David Sanders

Conference calls can include the option of the caller actually making calls to the other participants or, in some cases individuals can call directly into a conference call

How Conference Calls Save You Money and Time - by Mark Kessler

Conference calls pricing, however, can range from a small amount for three-way calling to a large amount for adding in phone lines that can be connected to each other