Abstract: A communication network capable of establishing an SVC bypass route when a failure occurs in a PVC multiplexed line wherein each of ATM switches at both ends of a PVC stores the relations of SVC specifying information and the other party PVC information in association with each PVC in a management table. At the time of bypassing, one of the switches transmits a message including the other party PVC information to another ATM switch for each PVC to be bypassed and another ATM switch specifies a PVC to be switched on the basis of the received message and switches the PVC to an SVC specified by the corresponding SVC specifying information stored in the management table.

Abstract: A communication apparatus capable of being connected to networks of a plurality of types, comprising a network discrimination table for discriminating an incoming network of a call setup message, a routing table for selecting an outgoing network of the call setup message, and a control unit for rewriting the contents of an address field and a sub-address field of the received call setup message on the basis of the routing table and transmitting the resultant message to the outgoing network.

Abstract: In an ATM network having a non-ATM apparatus such as a PBX, a band and various apparatuses are effectively used by employing SVC, so that a ring back tone, etc., is transmitted to the non-ATM apparatus of originating side. An ATM signaling apparatus 210 comprises a signaling convert section 201 for making conversion of signaling information between an ATM network 220 and a PBX 230, and a cell assembly and disassembly section (CLAD) 204 for cell assembling and disassembling user information. An ATM signaling interface section 203 receives and transmits ATM signaling information from/to the ATM network 220, and sends a user VC connect and a release indication 209 to the CLAD section 204. An non-ATM signaling interface section 202 receives and transmits PBX signaling information from/to the PBX 230. User information 206 and a user information cell 208 sent from the PBX 230 and the ATM network 220 is cell assembled and cell disassembled by the CLAD section 204.

Abstract: The present invention intends to realize highly reliable communications between a frame relay network and an ATM network by corresponding service classes decided in both networks to each other.

Abstract: The present invention intends to realize highly reliable communications between a frame relay network and an ATM network by corresponding service classes decided in both networks to each other. In order to achieve the above object, the frame relay data communication apparatus of the present invention used to allow communications between the frame relay network and the ATM network is provided with a frame receiver unit for receiving frame data from the frame relay network; a cell assembly unit for assembling received frame data into ATM cells and transmitting assembled cells to the ATM network; and a controller for controlling both frame receiver unit and cell assembly unit so as to extract priority order information from received frame data and receive priority order information of data used in ATM networks from an ATM network and decide a service class of the received data to assemble the received frame data into cells according to the decided service class.