| 摘要 |
According to one embodiment, a communication system includes a first terminal connected to an IP network and communicates with a second terminal through the IP network and a server apparatus including a controller that controls a communication between the first and second terminals. The first terminal includes a transmitter that transmits an instruction data for activating an additional function in response to a request operation for activating the additional function while the first terminal communicates with the second terminal. The controller of the server apparatus analyses a received data by the server apparatus. When it is analysed that the received data includes the instruction data for activating the additional function, the controller performs the additional function based on the instruction data. Suitable for a Session Initiation Protocol (SIP) environment. |
