Communication system e.g. for telephone conference, enables information exchange between subscribers coupled via central communications switch when subscriber information matches information stored in list

摘要

The communication system includes two different transmission networks, one of which is a telephone network, and the other the Internet. Individual identification information is provided for each subscriber. In the central switch, a list of individual ID information for all subscribers is stored. The central switch has a subscriber authentication device (8) which enables the information exchange only between subscribers whose ID information matches the information stored in the list.