TRANSFER PROGRAM, TRANSFER DEVICE AND TRANSFER METHOD

PROBLEM TO BE SOLVED: To save call charge.SOLUTION: A PBX10 accepts a call originated from a PS30A to the number of a PS30B used in a first network. The PBX10 also refers to attribute information in which presence or absence of the ability for connecting the PS30 with a second network different from the first network is associated with each PS30. Furthermore, the PBX10 controls whether or not the call is transferred to a transfer destination number corresponding to the number of the PS30B, depending on whether or not the presence or absence of the ability for connecting the PS30A with a second network different from the first network, and the ability for connecting the PS30 with a second network different from the first network have a predetermined relationship.