COMMUNICATION METHOD, COMMUNICATION DEVICE, PORTABLE TELEPHONE TERMINAL, AND COMMUNICATION SYSTEM

摘要

A home gateway apparatus is connected to a storage apparatus. A cell phone terminal is connected to the home gateway apparatus via an IP network. Upon acknowledging a telephone number from the cell phone terminal, the home gateway apparatus communicates an IP address of the home gateway apparatus to the cell phone terminal. Subsequently, upon acknowledging a connection request to the IP address thus communicated, the home gateway apparatus performs a process of authenticating the connection request, based on the telephone number of the cell phone terminal and the telephone number already acknowledged. Further, the home gateway apparatus makes the storage apparatus available for use by the cell phone terminal thus authenticated via the IP network.