# SdkErrorCode

Source: https://docs.voice.kheelona.com/reference/sdk/type-aliases/sdkerrorcode/

> **SdkErrorCode** = `"microphone_unavailable"` \| `"audio_unavailable"` \| `"network"` \| `"transport_failed"`

Codes the SDK raises itself, never sent by the service:
- `microphone_unavailable`: the microphone is missing, blocked or in use.
- `audio_unavailable`: the browser refused to play the voice (autoplay). Call `VoiceSession.resumeAudio()` from a
  click handler.
- `network`: the network failed before a connection was made.
- `transport_failed`: neither WebRTC nor the WebSocket could be set up.