Videoconference session switching from unicast to multicast

摘要

A method for switching a videoconference session that is currently taking place from unicast to multicast. The method includes the steps of sending an invitation from server to an additional party, assigning a common multicast Internet Protocol (IP) address and transmitting the common multicast IP address to the current participant in the videoconference session and an additional party to be added to the videoconference session, transmitting an IGMP message to the network from the current participant and the additional party, and hosting videoconference session on multicast address.