videostrategytype.php

См. документацию.

<?php
 
namespace Bitrix\Im\Call;

class VideoStrategyType {
    public const ALLOW_ALL = 'AllowAll';
    public const ALLOW_NONE = 'AllowNone';
    public const ONLY_SPEAKER = 'OnlySpeaker';
    public const CURRENTLY_TALKING = 'CurrentlyTalking';
 
    public static function getList()
    {
        return [static::ALLOW_ALL, static::ALLOW_NONE, static::ONLY_SPEAKER, static::CURRENTLY_TALKING];
    }
}