participant: configureMixer

Namespace: microsoft.graph


APIs under the /beta version in Microsoft Graph are subject to change. Use of these APIs in production applications is not supported. To determine whether an API is available in v1.0, use the Version selector.

Configure how audio is mixed for different participants in a multiparty conversation.


One of the following permissions is required to call this API. To learn more, including how to choose permissions, see Permissions.

Permission type Permissions (from least to most privileged)
Delegated (work or school account) Not Supported
Delegated (personal Microsoft account) Not Supported
Application Calls.JoinGroupCallsasGuest.All, Calls.JoinGroupCalls.All, Calls.InitiateGroupCalls.All

HTTP request

POST /app/calls/{id}/participants/configureMixer
POST /communications/calls/{id}/participants/configureMixer

Note: The /app path is deprecated. Going forward, use the /communications path.

Request headers

Name Description
Authorization Bearer {token}. Required.

Request body

In the request body, provide a JSON object with the following parameters.

Parameter Type Description
participantMixerLevels participantMixerLevel collection Configuration of mixer levels for given audio participant.
clientContext String The client context.


Returns 202 Accepted response code and a Location header with a uri to the commsOperation created for this request.


The following example shows how to call this API.


The following example shows the request.

Content-Type: application/json
Content-Length: 501

  "clientContext": "d45324c1-fcb5-430a-902c-f20af696537c",
  "participantMixerLevels": [
      "participant": "550fae72-d251-43ec-868c-373732c2704f",
      "exclusive": true,
      "ducking": {
        "rampActive": 50,
        "rampInactive": 50,
        "lowerLevel": 10,
        "upperLevel": 50
      "sourceLevels": [
          "participant": "632899f8-2ea1-4604-8413-27bd2892079f",
          "level": 50,
          "duckOthers": false

Note: The response object shown here might be shortened for readability.

HTTP/1.1 200 OK

  "@odata.type": "#microsoft.graph.commsOperation",
  "clientContext": "clientContext-value",
  "id": "0fe0623f-d628-42ed-b4bd-8ac290072cc5",
  "resultInfo": null,
  "status": "running"
Notification - operation completed
Content-Type: application/json
  "@odata.type": "#microsoft.graph.commsNotifications",
  "value": [
      "@odata.type": "#microsoft.graph.commsOperation",
      "changeType": "deleted",
      "resourceUrl": "/communications/calls/57dab8b1-894c-409a-b240-bd8beae78896/operations/0fe0623f-d628-42ed-b4bd-8ac290072cc5",
      "resourceData": {
        "@odata.type": "#microsoft.graph.commsOperation",
        "": "/communications/calls/57dab8b1-894c-409a-b240-bd8beae78896/operations/0fe0623f-d628-42ed-b4bd-8ac290072cc5",
        "@odata.etag": "W/\"1\"",
        "clientContext": "d45324c1-fcb5-430a-902c-f20af696537c",
        "status": "completed"