| 摘要 |
<p>The present invention provides a character/data transmitting/receiving system, a terminal management apparatus, and a character/data transmitting/receiving method used therein, which can obtain responses from all the parties concerned at once without requesting a voice response from each of the parties in a group communication. PTT (Push-to-Talk) terminals and a terminal management apparatus are provided with a capability of group communication by the PTT communication and a response request capability using a communication protocol of the response control communication. The terminal management apparatus, upon receipt of a response request instruction from one of PTT terminals via the response control communication, makes an inquiry by sending a response request to the other PTT terminals participating in the group communication. The respective PTT terminals having received the inquiry send back a response to the inquiry to the terminal management apparatus. The terminal management apparatus collects the respective response status based on the responses from the PTT terminals, and informs the PTT terminal that has originated the response request instruction of the response status via the response control communication.</p> |
