System and process for mass telephony conference call

An automated teleconferencing control system and method reduces conference call setup time by simultaneously out dialing to multiple conferees through a plurality of parallel telecommunications resources. The teleconferencing control system includes the feature of automatically gathering statistics of each connection attempt, as well as many other call aspects, using these statistics to automatically improve the efficiency of subsequent conference call initiations. Gathered statistics are also used to automatically configure the system to cause all of the conferees to be connected to a conference call at substantially the same time. The selection of which telecommunications resources are used for contacting each target conferee is made based on criteria that include the telephone number or Internet address of the target conferee's telephone.