| 摘要 |
According to an aspect of the present invention, there is provided a Session Initiation Protocol (SIP) telephone system comprises a server unit, telephone terminals and a module. The server is connected to Internet Protocol (IP) network. The telephone terminals transmit and receive SIP messages to and from the server unit via the IP network. The module applies SIP messages regarding event notification to data transmission to form interactive communication paths among the server unit and each of the telephone terminals.
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