transcription

Emitted when transcription data is received during a call. Transcription messages are automatically separated from regular infoReceived events.

Callback Parameters

Parameter	Type	Description
`transcription`	`object`	The transcription data extracted from the `_transcription` property of the incoming SIP INFO message.

The transcription object typically has the following structure (depending on your Voice Gateway configuration):

Property	Type	Description
`originator`	`string`	Indicates the source of the transcription, for example, `'user'` or `'bot'`.
`messages`	`{ text: string }[]`	Array of message objects, each containing a `text` field.

Example

client.on('transcription', (transcription) => {
  const speaker = transcription.originator === 'user' ? 'User' : 'Bot';
  transcription.messages.forEach((message) => {
    console.log(`${speaker}: ${message.text}`);
  });
});

If an incoming info message contains a _transcription property, it is emitted only as a transcription event — not as an infoReceived event.

Transcription Filtering

The SDK automatically separates transcription data from regular info messages. No additional configuration is needed — the filtering is handled automatically:

transcription event: Receives only messages that contain a _transcription property.
infoReceived event: Receives all other info messages.

This means you can listen to both events independently without worrying about duplicates.

More Information

Last modified on April 21, 2026

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Transcription Filtering

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Callback Parameters

Example

Transcription Filtering

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