You must create and initialize the voice client before other Vivox SDK actions can take place. During the voice client initialization process, the Vivox SDK sets up and starts all of its different subsystems. This can cause additional shared libraries to be loaded, and allows developers to customize a variety of Vivox SDK options before connecting to Vivox services. For example, a developer can select between audio ducking settings and logging level.

await VivoxService.Instance.InitializeAsync(VivoxConfigurationOptions config)

has optional parameters that you can use to choose the configuration of the Vivox Core SDK.

The following code displays an example of how to create and initialize the voice client on Windows, macOS, Android, and iOS:

using System;using UnityEngine;using Unity.Services.Authentication;using Unity.Services.Core;using Unity.Services.Vivox;async void Start(){    await UnityServices.InitializeAsync();    await AuthenticationService.Instance.SignInAnonymouslyAsync();    await VivoxService.Instance.InitializeAsync();}

5041:VxErrorAlreadyInitialized

For more details on the Unity Authentication Service, refer to Sign-in with the Authenticaiton package. For alternative authentication approaches, refer to Sign-in with Custom IDs, or if you are already using Vivox Access Tokens in your application, refer to Using VATs with UAS.