After receiving the ConnectRequest, the server must respond with one of three commands:
- **answer**: Accept and establish the call, enabling bidirectional audio streaming
- **busy**: Indicate the endpoint is busy, which terminates the connection
- **reject**: Decline the call, which terminates the connection

This response determines whether the WebSocket connection proceeds to the audio streaming phase or is closed.Client responds with answer/busy/reject command

Method: RECEIVE
Version: 1.0.0
## Operation Details

Action: receive
After receiving the ConnectRequest, the server must respond with one of three commands:
- **answer**: Accept and establish the call, enabling bidirectional audio streaming
- **busy**: Indicate the endpoint is busy, which terminates the connection
- **reject**: Decline the call, which terminates the connection

This response determines whether the WebSocket connection proceeds to the audio streaming phase or is closed.
Client responds with answer/busy/reject command

### Messages

#### Message