Abstract: In a terminal installation (1), a router (2) connects ATM access networks (RA1-RAM) to individual installations (4) of terminals (7) so as to route cells therebetween according to a routing table (25). The router also routes cells containing routing addresses reserved for dialog with a collective control center (3) managing the routing table. The control center processes said cells with reserved routing address to allocate internal logic channels to the dialog between the control center and the terminals, and internal logic channels to incoming and outgoing communications with the terminals and internal communications between terminals, independently of the addressing scheme of the access networks.

Abstract: In a terminal installation (1), a control center (3) is connected to a router (2) between ATM access networks (RA1-RAM) and mainly individual installations (4) of terminals (7) and shared terminals (13). The control center manages identification of the terminals and routing addresses to route communications from and to terminals. Display of functions of each terminal to the other terminals and location of each terminal in the installation are managed in the form of a directory used to draw up a list of terminals having a requested common function depending on access rights by a calling terminal.