The communication control system (2) is connected to an external server (4) connected to an IP network (5), via which IP terminals (6) can communicate with the server. The server includes a means (11) for receiving and processing status information relating to the communication network (1) and communication terminals (3), in addition to a means (12) for receiving instructions from the IP terminals, sending instructions to the communication control system and setting up or terminating connections between the communication terminals.