CONTRACT INFORMATION CACHE METHOD FOR MOBILE TERMINAL EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To reduce a processing amount and to decrease a connection delay time by storing contract information of a user to a mobile destination exchange till the terminal user moves to other exchange. SOLUTION: When a user terminal equipment 4-1 moves to an exchange 2-1 being a moving destination, position information representing the position of the user moving destination in a network is registered to a position information database 1 and a home exchange 13 transfers contract information 14 and a temporary storage area 3-1 stores the copy 6 of contract information. When the contract information is revised, a mobile destination exchange 2-1 is specified by the position information and the contract information of the exchange is updated.