Communication control apparatus

摘要

The present invention provides a communication control apparatus for controlling incoming and outgoing telephone calls (communication) in a corporate private telephone network and among a plurality of corporate telephone networks by using the IP. The communication control apparatus includes a plurality of interfaces connected to the plurality of corporate networks and processor, wherein when the processor receives an IP packet from a terminal that belongs to a first corporate network through any of the plurality of interfaces, the processor determines which of the corporate networks an incoming terminal for the packet belongs to based on outgoing SIP-URI and incoming SIP-URI contained in the header of the IP packet and performs necessary control so as to connect the outgoing terminal and the incoming terminal depending on each of the network to which the outgoing terminal belongs and other networks.