Patent ID: 8886233

Claim:
A communication service management system carrying out a communication service for transmitting data in a store-and-forward system, the communication service management system comprising a communication relay apparatus, provided on a data transmission path from a source network where a calling terminal device is located to a destination network where a receiving terminal device is located, for relaying the data, the communication relay apparatus comprising: an address information receiving unit for receiving address information, of the source network where the calling terminal device is located, attached to the data to be relayed; an address information storage unit for storing the address information of the source network received by the address information receiving unit; a location inquiry request generating unit for adding the address information of the source network stored by the address information storage unit to generate a location inquiry request of requesting a location of the receiving terminal device; a location inquiry request transmitting unit for transmitting the location inquiry request generated by the location inquiry request generating unit to the destination network; a connection determination request unit for requesting a communication carrier of the destination network to perform connection determination on whether a connection of the communication service between the communication carrier of the destination network and a communication carrier of the source network satisfies a predetermined connection permission condition; and a connection control unit for controlling the communication service to be connected, when a result of the connection determination is positive, and when the receiving terminal device is located in the destination network; wherein the location inquiry request includes a request for maintaining information indicating the communication carrier of the source network without change, by prohibiting overwriting of the information indicating the communication carrier of the source network, and wherein the address information storage unit in the communication relay apparatus stores the data in a format including a pair of a message section composed of data indicating the data to be relayed and a source address section composed of a source network address indicating the source network and being associated with the data of the message section, in a message box of a storage.