| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a conference system with a multicast terminal and a unicast terminal. <P>SOLUTION: A telecommunications system 10 includes a multicast IP or PMP (Point-to-Multipoint) ATM terminal 12 having audio and video streams. The system 10 includes a unicast terminal 14 having only an audio stream. The system includes a mixer 20 configured to form a call between the multicast IP or PMP ATM terminal 12 and the unicast terminal 14. The mixer 20 converts an upstream telephone audio stream from the unicast terminal 14 to a PMP audio stream for the multicast IP or PMP ATM terminal 12, and mixes/converts a downstream PMP/multicast audio stream from the multicast IP or PMP ATM terminal 12 to a unicast telephone audio stream for the unicast terminal 14. <P>COPYRIGHT: (C)2011,JPO&INPIT |
