MRCP connections and protocols
Avaya IR communicates with MRCP servers using the following protocols:
- Signaling requests for call set-up and tear-down between servers use Real-time Streaming Protocol (RTSP) connections.
- Audio data (speech delivered to an ASR engine for recognition and synthesized speech delivered from a TTS engine) is carried over a Real-time Transport Protocol (RTP) connection.
The two protocols use different ports and port ranges. For IBM WVS servers (and typically other MRCP-compliant vendor engines):
- RTSP uses a base port of 554
- RTP uses a base port of 10,000
