Once the server answers the call, audio can flow from the server to the platform as binary WebSocket frames.Client sends audio frames to the platform (binary WebSocket messages)

Method: RECEIVE
Version: 1.0.0
## Operation Details

Action: receive
Once the server answers the call, audio can flow from the server to the platform as binary WebSocket frames.
Client sends audio frames to the platform (binary WebSocket messages)

### Messages

#### Audio frame (binary)
Raw PCM (Pulse Code Modulation) audio bytes transmitted as a binary WebSocket frame.

**Format:** 16-bit signed linear PCM, mono (single channel), little-endian byte order.

**Frame size:** Audio should be sent in 20ms chunks. At 8 kHz this is 320 bytes per frame (160 samples × 2 bytes);
at 16 kHz it is 640 bytes per frame. Larger chunks are accepted but increase latency.

The sample rate is determined by the value specified in the SVAML `connectStream` command.
Raw PCM audio bytes sent as a WebSocket binary message