Computer Conferencing
Interactive sessions between networked computers whereby data, documents, and/or video and audio are shared. The term encompasses both data conferencing and desktop video conferencing. Web chat, whiteboards, and web based conferencing may be used in computer conferencing.
From :www.edb.utexas.edu/resta/itesm2002/glossary/glossary_c.html

Computer-Mediated Communication (CMC) is any form of communication between two or more individual people who interact and/or influence each other via separate computers through the Internet or a network connection - using social software. CMC does not include the methods by which two computers communicate, but rather how people communicate using computers. It is only peripherally concerned with any common work product created.
From :en.wikipedia.org/wiki/Computer_mediated_communication