> ## Documentation Index
> Fetch the complete documentation index at: https://docs.duix.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Call process

> Step-by-step lifecycle of the Duix H5 SDK, from initialization to session termination.

## Overview

The following diagram illustrates the **Duix H5 SDK call flow**,\
showing how each method and event connects within a real-time digital human session.\
This helps developers understand when to initialize, start, interact, and properly close the session.

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## SDK Call Flow

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## Lifecycle Summary

Below is a simplified description of the SDK’s execution lifecycle:

1. **Initialize**\
   Call `duix.init()` with the required configuration (`sign`, `containerLable`, `conversationId`, `platform`).

2. **Wait for Initialization Event**\
   Listen for the `initialSuccess` event to confirm all resources have loaded.

3. **Start the Session**\
   Invoke `duix.start()` to begin rendering the digital human and enable audio/video streaming.

4. **Interact in Real Time**
   * Use `duix.speak()` or `duix.answer()` for text/audio-based responses.
   * Enable or disable speech recognition via `duix.openAsr()` / `duix.closeAsr()`.
   * Monitor lifecycle events such as `speakStart`, `speakEnd`, `asrData`, and `report`.

5. **Handle User Actions & Network Events**
   * Respond to `error` or `report` events for network diagnostics.
   * Use `duix.break()` to interrupt speech or `duix.setVideoMuted()` to toggle playback.

6. **Terminate the Session**
   * When done, call `duix.stop()` to gracefully release all WebRTC resources.
   * Optionally bind `duix.stop()` to `window.beforeunload` for page refresh or close.

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## Best Practices

* Always **register event listeners before** calling `duix.start()`.
* For browsers with autoplay restrictions, start muted (`muted: true`) and later unmute via `setVideoMuted(false)`.
* If using green-screen background removal (`wipeGreen: true`), ensure the input video uses a **pure green background** during session creation.
* To maintain performance, stop the session (`duix.stop()`) when inactive for long periods.

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> **Tip:**\
> Pair this diagram with the [Methods](/sdks/h5/methods) and [Events](/sdks/h5/events) sections\
> to see both the functional flow and event sequence.