# Conference all participants on a contact in Amazon Connect Agent Workspace
<a name="3P-apps-voice-requests-conferenceparticipants"></a>

Conferences all participants on a contact together, removing any hold states and enabling all participants to communicate with each other.

 **Signature** 

```
conferenceParticipants(contactId: string): Promise<void>
```

 **Usage** 

```
await voiceClient.conferenceParticipants("contact-123");
console.log("All participants are now conferenced");
```

 **Input** 


|  **Parameter**  |  **Type**  |  **Description**  | 
| --- | --- | --- | 
| contactId Required | string | The unique identifier for the contact |