Call forwarding control system for ISDN

摘要

A call forwarding control system for use in a communication system which includes at least two terminals connected to a first network and at least two terminals connected to a second network which is coupled to the first network where the second network is an integrated services digital network and the first network is a public network. The call deflection control system being included within the second network. The call forwarding control system includes a forwarding accepter part for accepting a call forwarding request from a terminal of the second network upon that terminal receiving a call from a terminal of the first network. A judging part is included in the control system for judging whether the call forwarding request is a call forwarding to a terminal of the first or second network. A call forwarding execution part connected to the judging part executes a call forwarding to a terminal of the second network when the judging part judges that the call is to be forwarded to a terminal in the second network. A call forwarding request part requests the first network to execute the call forwarding when the judging part determines that the forwarding request is to a terminal of the first network.