| 摘要 |
PROBLEM TO BE SOLVED: To improve service in data communication by temporarily storing data in a memory used for general purpose when data can not be communicated because a data terminal is not connected with a mobile terminal, and automatically executing data communication when a service function is restored. SOLUTION: Calling information of data communication called from a mobile terminal 7#1 is given to a mobile terminal 7#2 through an exchange main body 1 as call incoming information. When the data terminal is not connected to the terminal 7#2, the terminal 7#2 sends response information of a transmission preserving request to the main body 1. The terminal 7#2 allows a display part to display a message that the call incoming of data communication occurs, and monitors a data terminal 8#2. On the other hand a main control part 5 in the main body 1 connects a speech path between a radio base station interface part 3#1 and a speech storing memory part 4 to temporarily store data in the memory part 4. |
