Skip to main content

Overview

Teler supports real-time, bidirectional media streaming over WebSockets.

Media streams can be useful for building virtual agents, live transcription systems, and audio analysis pipelines.

How It Works​

1. Call Initiation​

  • Incoming - A call is received on your Teler number.
  • Outgoing - You initiate a call using the HTTP API.

2. Call Flow Retrieval​

  • Incoming - Call flow is fetched via the Incoming Call URL of your Voice App.
  • Outgoing - Call flow is fetched via the flow_url value provided while initiating the call using the HTTP API.

3. Stream Flow Response​

Your application responds with a Stream flow that includes a ws_url.

4. WebSocket Connection​

Teler establishes a WebSocket connection with the provided ws_url.

5. Audio Streaming (Teler → Application)​

Teler streams Base64-encoded audio chunks to your application over the WebSocket connection.

6. Audio Streaming (Application → Teler)​

Your application can optionally send audio chunks back over the same connection, which Teler plays back into the call.

7. Call Termination​

Teler closes the WebSocket connection when the call ends.