| 摘要 |
In a system and method for processing multicast in a unicast-based Voice over Internet Protocol (VoIP) system, the method includes the steps of: receiving, at a VoIP call server, subnet information from VoIP terminals authenticated by an authentication server, generating multicast group information, and then providing the multicast group information to the respective authenticated VoIP terminals; searching, at the VoIP call server, a list of grouped VoIP terminals, selecting a VoIP terminal of a corresponding subnet, and then transmitting multicast session information to the selected VoIP terminal so as to set the VoIP terminal as a relay VoIP terminal; and requesting, at the VoIP call server, a media server to transmit group message data to the relay VoIP terminal. According to the system and method, it is possible to implement multicast in a unicast-based VoIP system without the need for additional equipment.
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