Fault-tolerant system, voice server operation method, and fault-tolerant program

A voice server operation method, in a fault-tolerant system in which

• a first voice server to which a first group ID is assigned using a card-type ExpEther device that employs ExpEther technology, a second voice server to which a second group ID is assigned using a card-type ExpEther device that employs the ExpEther technology, and a legacy equipment accommodation apparatus to which the first group ID is assigned using a box-type ExpEther device that employs the ExpEther technology are connected via an Ethernet network, the voice server operation method comprising:
• when a fault occurs in the first voice server, rewriting the group ID of the legacy equipment accommodation apparatus from the first group ID to the second group ID, thereby switching control of the legacy equipment accommodation apparatus to be under control of the second voice server.

A non-transitory computer readable medium storing a fault-tolerant program for a fault-tolerant system in which

• a first voice server to which a first group ID is assigned using a card-type ExpEther device that employs ExpEther technology, a second voice server to which a second group ID is assigned using a card-type ExpEther device that employs the ExpEther technology, and a legacy equipment accommodation apparatus to which the first group ID is assigned using a box-type ExpEther device that employs the ExpEther technology are connected via an Ethernet network, the program cause the second voice server to perform:
• when a fault occurs in the first voice server, rewriting the group ID of the legacy equipment accommodation apparatus from the first group ID to the second group ID, thereby switching control of the legacy equipment accommodation apparatus to be under control of the second voice server.