1# Constants 2 3> **NOTE** 4> 5> The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version. 6 7| Name | Type | Read-Only| Description | 8| --------------------------------------- | ----------|---| ------------------ | 9| DEFAULT_VOLUME_GROUP_ID<sup>9+</sup> | number | Yes| Default volume group ID.<br>**System capability**: SystemCapability.Multimedia.Audio.Volume | 10| DEFAULT_INTERRUPT_GROUP_ID<sup>9+</sup> | number | Yes| Default audio interruption group ID.<br>**System capability**: SystemCapability.Multimedia.Audio.Interrupt | 11 12**Example** 13 14```ts 15import { audio } from '@kit.AudioKit'; 16 17const defaultVolumeGroupId = audio.DEFAULT_VOLUME_GROUP_ID; 18const defaultInterruptGroupId = audio.DEFAULT_INTERRUPT_GROUP_ID; 19``` 20