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Unicast and multicast voice-over-IP application


RAT is a network audio tool that allows users to participate in audio conferences over the Internet. These can be between two participants directly, or between a group of participants on a common multicast group. No special features are required to use RAT in point-to-point mode, but to use the multicast conferencing facilities of RAT, a connection to the Mbone, or a similar multicast-capable network, is required. RAT is based on IETF standards, using RTP above UDP/IP as its transport protocol, and conforming to the RTP profile for audio and video conferences with minimal control.

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