call-subscribetotone.md

title	description	author	ms.localizationpriority	ms.subservice	doc_type	ms.date
call: subscribeToTone	Subscribe to DTMF (dual-tone multi-frequency signaling) which allows you to be notified when the user presses keys on a 'Dialpad'.	rahulva-msft	medium	cloud-communications	apiPageType	04/04/2024

call: subscribeToTone

Namespace: microsoft.graph

Subscribe to DTMF (dual-tone multi-frequency signaling) which allows you to be notified when the user presses keys on a "dialpad".

Note

The subscribeToTone action is supported only for calls that are initiated with serviceHostedMediaConfig.

[!INCLUDE national-cloud-support]

Permissions

Choose the permission or permissions marked as least privileged for this API. Use a higher privileged permission or permissions only if your app requires it. For details about delegated and application permissions, see Permission types. To learn more about these permissions, see the permissions reference.

[!INCLUDE permissions-table]

Note: Any tone data provided may not be persisted. Make sure you are compliant with the laws and regulations of your area regarding data protection and confidentiality of communications. Please see the Terms of Use and consult with your legal counsel for more information.

HTTP request

POST /communications/calls/{id}/subscribeToTone

Request headers

Name	Description
Authorization	Bearer {token}. Required. Learn more about authentication and authorization.

Request body

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

Parameter	Type	Description
clientContext	String	Unique client context string. Can have a maximum of 256 characters.

Response

If successful, this method returns 200 OK response code.

Example

The following example shows how to call this API.

Request

The following example shows the request.

HTTP

POST https://graph.microsoft.com/v1.0/communications/calls/{id}/subscribeToToneContent-Type: application/jsonContent-Length: 46 { "clientContext": "fd1c7836-4d84-4e24-b6aa-23188688cc54" }

C#

[!INCLUDE sample-code] [!INCLUDE sdk-documentation]

CLI

[!INCLUDE sample-code] [!INCLUDE sdk-documentation]

Go

[!INCLUDE sample-code] [!INCLUDE sdk-documentation]

Java

[!INCLUDE sample-code] [!INCLUDE sdk-documentation]

JavaScript

[!INCLUDE sample-code] [!INCLUDE sdk-documentation]

PHP

[!INCLUDE sample-code] [!INCLUDE sdk-documentation]

PowerShell

[!INCLUDE sample-code] [!INCLUDE sdk-documentation]

Python

[!INCLUDE sample-code] [!INCLUDE sdk-documentation]

---

Response

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

HTTP/1.1 200 OKContent-Type: application/jsonLocation: https://graph.microsoft.com/v1.0/communications/calls/57dab8b1-894c-409a-b240-bd8beae78896/operations/0fe0623f-d628-42ed-b4bd-8ac290072cc5 { "@odata.type": "#microsoft.graph.subscribeToToneOperation", "clientContext": "clientContext-value", "id": "0fe0623f-d628-42ed-b4bd-8ac290072cc5", "status": "completed" }

Notification - tone notification

The notification contains information of the tone pressed in the toneinfo resource.

POST https://bot.contoso.com/api/callsContent-Type: application/json

{ "@odata.type": "#microsoft.graph.commsNotifications", "value": [ { "@odata.type": "#microsoft.graph.commsNotification", "changeType": "updated", "resourceUrl": "/communications/calls/57dab8b1-894c-409a-b240-bd8beae78896", "resourceData": { "@odata.type": "#microsoft.graph.call", "state": "established", "toneInfo": { "@odata.type": "#microsoft.graph.toneInfo", "sequenceId": 1, "tone": "tone1" } } } ] }