| 摘要 |
PROBLEM TO BE SOLVED: To assist a call originating terminal and a call incoming terminal with efficient peer-to-peer communication.SOLUTION: A subscriber information management server 5 receives an identifier of a call incoming terminal 1b and an identifier of a call incoming side subscriber packet switch 3b from the call incoming side subscriber packet switch 3b and stores them in switch address data 51. When a call originating terminal 1a performs peer-to-peer connection with the call incoming terminal 1b, it transmits an identifier of the call originating terminal 1a and the identifier of the call incoming terminal 1b to a call originating side subscriber packet switch 3a via a call originating side base station 2a. The call originating side subscriber packet switch 3a obtains an address of the call incoming side subscriber packet switch 3b from the subscriber information management server 5. The call originating side packet switch 3a request the call incoming side subscriber packet switch 3b to set a path on the basis of the address obtained from the subscriber information management server 5. The call originating terminal 1a or call incoming terminal 1b assigns an IP address to a communication destination terminal via the set path. |
