Abstract: An apparatus monitors a communication system including at least one communication device. The monitoring apparatus includes a memory, a processor. A second virtual system is generated by changing a first virtual system determined according to a combination of an arrangement of a plurality of virtual machines arranged in the at least one communication device, and a communication path between the plurality of virtual machines. The memory stores system information that represents an arrangement and a communication path of virtual machines used in the second virtual system. The processor receives the fault information that reports an occurrence of a fault. The processor identifies the fault information as being generated in the virtual machine within the first virtual system when a specified fault detected in a case where the fault information is transmitted from any of the virtual machines within the second virtual system represented by the system information is not detected.

Abstract: An apparatus monitors a communication system including at least one communication device. The monitoring apparatus includes a memory, a processor. A second virtual system is generated by changing a first virtual system determined according to a combination of an arrangement of a plurality of virtual machines arranged in the at least one communication device, and a communication path between the plurality of virtual machines. The memory stores system information that represents an arrangement and a communication path of virtual machines used in the second virtual system. The processor receives the fault information that reports an occurrence of a fault. The processor identifies the fault information as being generated in the virtual machine within the first virtual system when a specified fault detected in a case where the fault information is transmitted from any of the virtual machines within the second virtual system represented by the system information is not detected.

Abstract: A line providing apparatus has an acceptance processor accepting a line use request from the terminal apparatus, a contract determiner determines a state of conclusion of a first contract, a second contract or a combined contract obtained by substantially combining the first contract and the second contract at the terminal apparatus which is a source of the line use request accepted by the acceptance processor, and an assistance processor performing an assisting process for conclusion of a contract found not to be concluded according to a result of determination on the state of conclusion of the first contract, the second contract or the combined contract by the contract determiner, whereby the user of the terminal apparatus which does not yet conclude can sign the contract for the communication service or the information providing service through the terminal apparatus.

Abstract: A line providing apparatus has an acceptance processor accepting a line use request from the terminal apparatus, a contract determiner determines a state of conclusion of a first contract, a second contract or a combined contract obtained by substantially combining the first contract and the second contract at the terminal apparatus which is a source of the line use request accepted by the acceptance processor, and an assistance processor performing an assisting process for conclusion of a contract found not to be concluded according to a result of determination on the state of conclusion of the first contract, the second contract or the combined contract by the contract determiner, whereby the user of the terminal apparatus which does not yet conclude can sign the contract for the communication service or the information providing service through the terminal apparatus.