call: answer

Namespace: microsoft.graph

Enable a bot to answer an incoming call. The incoming call request can be an invite from a participant in a group call or a peer-to-peer call. If an invite to a group call is received, the notification will contain the chatInfo and meetingInfo parameters.

The bot is expected to answer, reject, or redirect the call before the call times out. The current timeout value is 15 seconds for regular scenarios, and 5 seconds for policy-based recording scenarios.

Permissions

You do not need any permissions to answer a peer-to-peer call. You need one of the following permissions to join a group call. 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.JoinGroupCall.All, Calls.JoinGroupCallAsGuest.All

Note: For a call that uses application-hosted media, you also need the Calls.AccessMedia.All permission. You must have at least one of the following permissions to ensure that the source in the incoming call notification is decrypted: Calls.AccessMedia.All, Calls.Initiate.All, Calls.InitiateGroupCall.All, Calls.JoinGroupCall.All, Calls.JoinGroupCallAsGuest.All. The source is the caller info in the incoming call notification. Without at least one of these permissions, the source will remain encrypted.

HTTP request

POST /communications/calls/{id}/answer

Request headers

Name	Description
Authorization	Bearer {token}. Required.
Content-type	application/json. Required.

Request body

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

Parameter	Type	Description
callbackUri	String	Allows bots to provide a specific callback URI for the concurrent call to receive later notifications. If this property has not been set, the bot's global callback URI will be used instead. This must be https.
acceptedModalities	String collection	The list of accept modalities. Possible values are: audio, video, videoBasedScreenSharing. Required for answering a call.
callOptions	incomingCallOptions	The call options.
mediaConfig	appHostedMediaConfig or serviceHostedMediaConfig	The media configuration. (Required)
participantCapacity	Int32	The number of participant that the application can handle for the call, for Teams policy-based recording scenario.

Response

This method returns a 202 Accepted response code.

Examples

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}/answer
Content-Type: application/json
Content-Length: 211

{
  "callbackUri": "callbackUri-value",
  "mediaConfig": {
    "@odata.type": "#microsoft.graph.appHostedMediaConfig",
    "blob": "<Media Session Configuration Blob>"
  },
  "acceptedModalities": [
    "audio"
  ],
  "callOptions": {
    "@odata.type": "#microsoft.graph.incomingCallOptions",
    "isContentSharingNotificationEnabled": true
  },
  "participantCapacity": 200
}

C#

var graphClient = new GraphServiceClient(requestAdapter);

var requestBody = new Microsoft.Graph.Communications.Calls.Item.Answer.AnswerPostRequestBody
{
	CallbackUri = "callbackUri-value",
	MediaConfig = new MediaConfig
	{
		OdataType = "#microsoft.graph.appHostedMediaConfig",
		AdditionalData = new Dictionary<string, object>
		{
			{
				"blob" , "<Media Session Configuration Blob>"
			},
		},
	},
	AcceptedModalities = new List<Modality?>
	{
		Modality.Audio,
	},
	CallOptions = new IncomingCallOptions
	{
		OdataType = "#microsoft.graph.incomingCallOptions",
		IsContentSharingNotificationEnabled = true,
	},
	ParticipantCapacity = 200,
};
await graphClient.Communications.Calls["{call-id}"].Answer.PostAsync(requestBody);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

JavaScript

const options = {
	authProvider,
};

const client = Client.init(options);

const answer = {
  callbackUri: 'callbackUri-value',
  mediaConfig: {
    '@odata.type': '#microsoft.graph.appHostedMediaConfig',
    blob: '<Media Session Configuration Blob>'
  },
  acceptedModalities: [
    'audio'
  ],
  callOptions: {
    '@odata.type': '#microsoft.graph.incomingCallOptions',
    isContentSharingNotificationEnabled: true
  },
  participantCapacity: 200
};

await client.api('/communications/calls/{id}/answer')
	.post(answer);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Java

GraphServiceClient graphClient = GraphServiceClient.builder().authenticationProvider( authProvider ).buildClient();

String callbackUri = "callbackUri-value";

AppHostedMediaConfig mediaConfig = new AppHostedMediaConfig();
mediaConfig.blob = "<Media Session Configuration Blob>";

LinkedList<Modality> acceptedModalitiesList = new LinkedList<Modality>();
acceptedModalitiesList.add(Modality.AUDIO);

IncomingCallOptions callOptions = new IncomingCallOptions();
callOptions.isContentSharingNotificationEnabled = true;

int participantCapacity = 200;

graphClient.communications().calls("{id}")
	.answer(CallAnswerParameterSet
		.newBuilder()
		.withCallbackUri(callbackUri)
		.withMediaConfig(mediaConfig)
		.withAcceptedModalities(acceptedModalitiesList)
		.withParticipantCapacity(participantCapacity)
		.withCallOptions(callOptions)
		.build())
	.buildRequest()
	.post();

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Go

//THE GO SDK IS IN PREVIEW. NON-PRODUCTION USE ONLY
graphClient := msgraphsdk.NewGraphServiceClientWithCredentials(cred, scopes)

requestBody := graphmodels.NewAnswerPostRequestBody()
callbackUri := "callbackUri-value"
requestBody.SetCallbackUri(&callbackUri) 
mediaConfig := graphmodels.NewMediaConfig()
additionalData := map[string]interface{}{
	"blob" : "<Media Session Configuration Blob>", 
}
mediaConfig.SetAdditionalData(additionalData)
requestBody.SetMediaConfig(mediaConfig)
acceptedModalities := []graphmodels.Modalityable {
	modality := graphmodels.AUDIO_MODALITY 
	requestBody.SetModality(&modality) 

}
requestBody.SetAcceptedModalities(acceptedModalities)
callOptions := graphmodels.NewIncomingCallOptions()
isContentSharingNotificationEnabled := true
callOptions.SetIsContentSharingNotificationEnabled(&isContentSharingNotificationEnabled) 
requestBody.SetCallOptions(callOptions)
participantCapacity := int32(200)
requestBody.SetParticipantCapacity(&participantCapacity) 

graphClient.Communications().CallsById("call-id").Answer().Post(context.Background(), requestBody, nil)

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PowerShell

Import-Module Microsoft.Graph.CloudCommunications

$params = @{
	CallbackUri = "callbackUri-value"
	MediaConfig = @{
		"@odata.type" = "#microsoft.graph.appHostedMediaConfig"
		Blob = "<Media Session Configuration Blob>"
	}
	AcceptedModalities = @(
		"audio"
	)
	CallOptions = @{
		"@odata.type" = "#microsoft.graph.incomingCallOptions"
		IsContentSharingNotificationEnabled = $true
	}
	ParticipantCapacity = 200
}

Invoke-MgAnswerCommunicationCall -CallId $callId -BodyParameter $params

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PHP

<?php

// THIS SNIPPET IS A PREVIEW FOR THE KIOTA BASED SDK. NON-PRODUCTION USE ONLY
$graphServiceClient = new GraphServiceClient($requestAdapter);

$requestBody = new AnswerPostRequestBody();
$requestBody->setCallbackUri('callbackUri-value');

$mediaConfig = new MediaConfig();
$mediaConfig->set@odatatype('#microsoft.graph.appHostedMediaConfig');

$additionalData = [
'blob' => '<Media Session Configuration Blob>', 
];
$mediaConfig->setAdditionalData($additionalData);



$requestBody->setMediaConfig($mediaConfig);
$requestBody->setAcceptedModalities([$requestBody->setModality(new Modality('audio'));
]);

$callOptions = new IncomingCallOptions();
$callOptions->set@odatatype('#microsoft.graph.incomingCallOptions');

$callOptions->setIsContentSharingNotificationEnabled(true);


$requestBody->setCallOptions($callOptions);
$requestBody->setParticipantCapacity(200);



$graphServiceClient->communications()->callsById('call-id')->answer()->post($requestBody);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Response

The following is an example of the response.

HTTP/1.1 202 Accepted

Example 1: Answer a Peer-to-Peer VoIP call with service hosted media

Notification - incoming

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

{
  "@odata.type": "#microsoft.graph.commsNotifications",
  "value": [
    {
      "@odata.type": "#microsoft.graph.commsNotification",
      "changeType": "created",
      "resourceUrl": "/communications/calls/57DAB8B1894C409AB240BD8BEAE78896",
      "resourceData": {
        "@odata.type": "#microsoft.graph.call",
        "@odata.id": "/communications/calls/57DAB8B1894C409AB240BD8BEAE78896",
        "@odata.etag": "W/\"5445\"",
        "state": "incoming",
        "direction": "incoming",
        "source": {
          "identity": {
            "user": {
              "displayName": "Test User",
              "id": "8A34A46B-3D17-4ADC-8DCE-DC4E7D572698"
            }
          },
          "region": "westus",
          "languageId": "en-US"
        },
        "targets": [
          {
            "identity": {
              "application": {
                "displayName": "Test BOT",
                "id": "8A34A46B-3D17-4ADC-8DCE-DC4E7D572698"
              }
            }
          }
        ],
        "requestedModalities": [ "audio" ]
      }
    }
  ]
}

Request

HTTP

POST /communications/calls/57DAB8B1894C409AB240BD8BEAE78896/answer
Content-Type: application/json

{
  "callbackUri": "https://bot.contoso.com/api/calls",
  "acceptedModalities": [ "audio" ],
  "mediaConfig": {
    "@odata.type": "#microsoft.graph.serviceHostedMediaConfig",
    "preFetchMedia": [
      {
        "uri": "https://cdn.contoso.com/beep.wav",
        "resourceId": "1D6DE2D4-CD51-4309-8DAA-70768651088E"
      },
      {
        "uri": "https://cdn.contoso.com/cool.wav",
        "resourceId": "1D6DE2D4-CD51-4309-8DAA-70768651088F"
      }
    ]
  }
}

C#

GraphServiceClient graphClient = new GraphServiceClient( authProvider );

var callbackUri = "https://bot.contoso.com/api/calls";

var acceptedModalities = new List<Modality>()
{
	Modality.Audio
};

var mediaConfig = new ServiceHostedMediaConfig
{
	PreFetchMedia = new List<MediaInfo>()
	{
		new MediaInfo
		{
			Uri = "https://cdn.contoso.com/beep.wav",
			ResourceId = "1D6DE2D4-CD51-4309-8DAA-70768651088E"
		},
		new MediaInfo
		{
			Uri = "https://cdn.contoso.com/cool.wav",
			ResourceId = "1D6DE2D4-CD51-4309-8DAA-70768651088F"
		}
	}
};

await graphClient.Communications.Calls["{call-id}"]
	.Answer(callbackUri,mediaConfig,acceptedModalities,null,null)
	.Request()
	.PostAsync();

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

JavaScript

const options = {
	authProvider,
};

const client = Client.init(options);

const answer = {
  callbackUri: 'https://bot.contoso.com/api/calls',
  acceptedModalities: [ 'audio' ],
  mediaConfig: {
    '@odata.type': '#microsoft.graph.serviceHostedMediaConfig',
    preFetchMedia: [
      {
        uri: 'https://cdn.contoso.com/beep.wav',
        resourceId: '1D6DE2D4-CD51-4309-8DAA-70768651088E'
      },
      {
        uri: 'https://cdn.contoso.com/cool.wav',
        resourceId: '1D6DE2D4-CD51-4309-8DAA-70768651088F'
      }
    ]
  }
};

await client.api('/communications/calls/57DAB8B1894C409AB240BD8BEAE78896/answer')
	.post(answer);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Java

GraphServiceClient graphClient = GraphServiceClient.builder().authenticationProvider( authProvider ).buildClient();

String callbackUri = "https://bot.contoso.com/api/calls";

LinkedList<Modality> acceptedModalitiesList = new LinkedList<Modality>();
acceptedModalitiesList.add(Modality.AUDIO);

ServiceHostedMediaConfig mediaConfig = new ServiceHostedMediaConfig();
LinkedList<MediaInfo> preFetchMediaList = new LinkedList<MediaInfo>();
MediaInfo preFetchMedia = new MediaInfo();
preFetchMedia.uri = "https://cdn.contoso.com/beep.wav";
preFetchMedia.resourceId = "1D6DE2D4-CD51-4309-8DAA-70768651088E";
preFetchMediaList.add(preFetchMedia);
MediaInfo preFetchMedia1 = new MediaInfo();
preFetchMedia1.uri = "https://cdn.contoso.com/cool.wav";
preFetchMedia1.resourceId = "1D6DE2D4-CD51-4309-8DAA-70768651088F";
preFetchMediaList.add(preFetchMedia1);
mediaConfig.preFetchMedia = preFetchMediaList;

graphClient.communications().calls("57DAB8B1894C409AB240BD8BEAE78896")
	.answer(CallAnswerParameterSet
		.newBuilder()
		.withCallbackUri(callbackUri)
		.withMediaConfig(mediaConfig)
		.withAcceptedModalities(acceptedModalitiesList)
		.withParticipantCapacity(null)
		.withCallOptions(null)
		.build())
	.buildRequest()
	.post();

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Go

//THE GO SDK IS IN PREVIEW. NON-PRODUCTION USE ONLY
graphClient := msgraphsdk.NewGraphServiceClient(requestAdapter)

requestBody := graphmodels.NewAnswerPostRequestBody()
callbackUri := "https://bot.contoso.com/api/calls"
requestBody.SetCallbackUri(&callbackUri) 
acceptedModalities := []graphmodels.Modalityable {
	modality := graphmodels.AUDIO_MODALITY 
	requestBody.SetModality(&modality) 

}
requestBody.SetAcceptedModalities(acceptedModalities)
mediaConfig := graphmodels.NewMediaConfig()
additionalData := map[string]interface{}{


 := graphmodels.New()
uri := "https://cdn.contoso.com/beep.wav"
.SetUri(&uri) 
resourceId := "1D6DE2D4-CD51-4309-8DAA-70768651088E"
.SetResourceId(&resourceId) 
 := graphmodels.New()
uri := "https://cdn.contoso.com/cool.wav"
.SetUri(&uri) 
resourceId := "1D6DE2D4-CD51-4309-8DAA-70768651088F"
.SetResourceId(&resourceId) 

	preFetchMedia := []graphmodels.Objectable {
		,
		,

	}
}
mediaConfig.SetAdditionalData(additionalData)
requestBody.SetMediaConfig(mediaConfig)

graphClient.Communications().CallsById("call-id").Answer().Post(context.Background(), requestBody, nil)

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PowerShell

Import-Module Microsoft.Graph.CloudCommunications

$params = @{
	CallbackUri = "https://bot.contoso.com/api/calls"
	AcceptedModalities = @(
		"audio"
	)
	MediaConfig = @{
		"@odata.type" = "#microsoft.graph.serviceHostedMediaConfig"
		PreFetchMedia = @(
		)
	}
}

Invoke-MgAnswerCommunicationCall -CallId $callId -BodyParameter $params

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PHP

<?php

// THIS SNIPPET IS A PREVIEW FOR THE KIOTA BASED SDK. NON-PRODUCTION USE ONLY
$graphServiceClient = new GraphServiceClient($requestAdapter);

$requestBody = new AnswerPostRequestBody();
$requestBody->setCallbackUri('https://bot.contoso.com/api/calls');

$requestBody->setAcceptedModalities([$requestBody->setModality(new Modality('audio'));
]);

$mediaConfig = new MediaConfig();
$mediaConfig->set@odatatype('#microsoft.graph.serviceHostedMediaConfig');

$additionalData = [
'preFetchMedia' => $preFetchMedia1 = new ();
$	preFetchMedia1->setUri('https://cdn.contoso.com/beep.wav');

$	preFetchMedia1->setResourceId('1D6DE2D4-CD51-4309-8DAA-70768651088E');


$preFetchMediaArray []= $preFetchMedia1;
$preFetchMedia2 = new ();
$	preFetchMedia2->setUri('https://cdn.contoso.com/cool.wav');

$	preFetchMedia2->setResourceId('1D6DE2D4-CD51-4309-8DAA-70768651088F');


$preFetchMediaArray []= $preFetchMedia2;
$mediaConfig->setPreFetchMedia($preFetchMediaArray);


];
$mediaConfig->setAdditionalData($additionalData);



$requestBody->setMediaConfig($mediaConfig);


$graphServiceClient->communications()->callsById('call-id')->answer()->post($requestBody);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Response

HTTP/1.1 202 Accepted

Notification - establishing

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

{
  "@odata.type": "#microsoft.graph.commsNotifications",
  "value": [
    {
      "@odata.type": "#microsoft.graph.commsNotification",
      "changeType": "updated",
      "resourceUrl": "/communications/calls/57DAB8B1894C409AB240BD8BEAE78896",
      "resourceData": {
        "@odata.type": "#microsoft.graph.call",
        "@odata.id": "/communications/calls/57DAB8B1894C409AB240BD8BEAE78896",
        "@odata.etag": "W/\"5445\"",
        "state": "establishing"
      }
    }
  ]
}

Note: Call establishing/established notifications may arrive out of order.

Notification - established

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

{
  "@odata.type": "#microsoft.graph.commsNotifications",
  "value": [
    {
      "@odata.type": "#microsoft.graph.commsNotification",
      "changeType": "updated",
      "resourceUrl": "/communications/calls/57DAB8B1894C409AB240BD8BEAE78896",
      "resourceData": {
        "@odata.type": "#microsoft.graph.call",
        "@odata.id": "/communications/calls/57DAB8B1894C409AB240BD8BEAE78896",
        "@odata.etag": "W/\"5445\"",
        "state": "established"
      }
    }
  ]
}

Note: Call establishing/established notifications may arrive out of order.

Example 2: Answer VOIP call with application hosted media

Notification - incoming

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

{
  "@odata.type": "#microsoft.graph.commsNotifications",
  "value": [
    {
      "@odata.type": "#microsoft.graph.commsNotification",
      "changeType": "created",
      "resourceUrl": "/communications/calls/57DAB8B1894C409AB240BD8BEAE78896",
      "resourceData": {
        "@odata.type": "#microsoft.graph.call",
        "@odata.id": "/communications/calls/57DAB8B1894C409AB240BD8BEAE78896",
        "@odata.etag": "W/\"5445\"",
        "state": "incoming",
        "direction": "incoming",
        "source": {
          "@odata.type": "#microsoft.graph.participantInfo",
          "identity": {
            "user": {
              "displayName": "Test User",
              "id": "8A34A46B-3D17-4ADC-8DCE-DC4E7D572698"
            }
          },
          "region": "westus",
          "languageId": "en-US"
        },
        "targets": [
          {
            "@odata.type": "#microsoft.graph.invitationParticipantInfo",
            "identity": {
              "application": {
                "displayName": "Test BOT",
                "id": "8A34A46B-3D17-4ADC-8DCE-DC4E7D572698"
              }
            }
          }
        ],
        "requestedModalities": [ "audio" ]
      }
    }
  ]
}

Request

HTTP

POST /communications/calls/57DAB8B1894C409AB240BD8BEAE78896/answer
Content-Type: application/json

{
  "callbackUri": "https://bot.contoso.com/api/calls",
  "acceptedModalities": [ "audio" ],
  "mediaConfig": {
    "@odata.type": "#microsoft.graph.appHostedMediaConfig",
    "blob": "<Media Session Configuration Blob>"
  }
}

C#

GraphServiceClient graphClient = new GraphServiceClient( authProvider );

var callbackUri = "https://bot.contoso.com/api/calls";

var acceptedModalities = new List<Modality>()
{
	Modality.Audio
};

var mediaConfig = new AppHostedMediaConfig
{
	Blob = "<Media Session Configuration Blob>"
};

await graphClient.Communications.Calls["{call-id}"]
	.Answer(callbackUri,mediaConfig,acceptedModalities,null,null)
	.Request()
	.PostAsync();

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

JavaScript

const options = {
	authProvider,
};

const client = Client.init(options);

const answer = {
  callbackUri: 'https://bot.contoso.com/api/calls',
  acceptedModalities: [ 'audio' ],
  mediaConfig: {
    '@odata.type': '#microsoft.graph.appHostedMediaConfig',
    blob: '<Media Session Configuration Blob>'
  }
};

await client.api('/communications/calls/57DAB8B1894C409AB240BD8BEAE78896/answer')
	.post(answer);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Java

GraphServiceClient graphClient = GraphServiceClient.builder().authenticationProvider( authProvider ).buildClient();

String callbackUri = "https://bot.contoso.com/api/calls";

LinkedList<Modality> acceptedModalitiesList = new LinkedList<Modality>();
acceptedModalitiesList.add(Modality.AUDIO);

AppHostedMediaConfig mediaConfig = new AppHostedMediaConfig();
mediaConfig.blob = "<Media Session Configuration Blob>";

graphClient.communications().calls("57DAB8B1894C409AB240BD8BEAE78896")
	.answer(CallAnswerParameterSet
		.newBuilder()
		.withCallbackUri(callbackUri)
		.withMediaConfig(mediaConfig)
		.withAcceptedModalities(acceptedModalitiesList)
		.withParticipantCapacity(null)
		.withCallOptions(null)
		.build())
	.buildRequest()
	.post();

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Go

//THE GO SDK IS IN PREVIEW. NON-PRODUCTION USE ONLY
graphClient := msgraphsdk.NewGraphServiceClient(requestAdapter)

requestBody := graphmodels.NewAnswerPostRequestBody()
callbackUri := "https://bot.contoso.com/api/calls"
requestBody.SetCallbackUri(&callbackUri) 
acceptedModalities := []graphmodels.Modalityable {
	modality := graphmodels.AUDIO_MODALITY 
	requestBody.SetModality(&modality) 

}
requestBody.SetAcceptedModalities(acceptedModalities)
mediaConfig := graphmodels.NewMediaConfig()
additionalData := map[string]interface{}{
	"blob" : "<Media Session Configuration Blob>", 
}
mediaConfig.SetAdditionalData(additionalData)
requestBody.SetMediaConfig(mediaConfig)

graphClient.Communications().CallsById("call-id").Answer().Post(context.Background(), requestBody, nil)

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PowerShell

Import-Module Microsoft.Graph.CloudCommunications

$params = @{
	CallbackUri = "https://bot.contoso.com/api/calls"
	AcceptedModalities = @(
		"audio"
	)
	MediaConfig = @{
		"@odata.type" = "#microsoft.graph.appHostedMediaConfig"
		Blob = "<Media Session Configuration Blob>"
	}
}

Invoke-MgAnswerCommunicationCall -CallId $callId -BodyParameter $params

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PHP

<?php

// THIS SNIPPET IS A PREVIEW FOR THE KIOTA BASED SDK. NON-PRODUCTION USE ONLY
$graphServiceClient = new GraphServiceClient($requestAdapter);

$requestBody = new AnswerPostRequestBody();
$requestBody->setCallbackUri('https://bot.contoso.com/api/calls');

$requestBody->setAcceptedModalities([$requestBody->setModality(new Modality('audio'));
]);

$mediaConfig = new MediaConfig();
$mediaConfig->set@odatatype('#microsoft.graph.appHostedMediaConfig');

$additionalData = [
'blob' => '<Media Session Configuration Blob>', 
];
$mediaConfig->setAdditionalData($additionalData);



$requestBody->setMediaConfig($mediaConfig);


$graphServiceClient->communications()->callsById('call-id')->answer()->post($requestBody);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Response

HTTP/1.1 202 Accepted

Notification - establishing

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

{
  "@odata.type": "#microsoft.graph.commsNotifications",
  "value": [
    {
      "@odata.type": "#microsoft.graph.commsNotification",
      "changeType": "updated",
      "resourceUrl": "/communications/calls/57DAB8B1894C409AB240BD8BEAE78896",
      "resourceData": {
        "@odata.type": "#microsoft.graph.call",
        "@odata.id": "/communications/calls/57DAB8B1894C409AB240BD8BEAE78896",
        "@odata.etag": "W/\"5445\"",
        "state": "establishing"
      }
    }
  ]
}

Note: Call establishing/established notifications may arrive out of order.

Notification - established

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

{
  "@odata.type": "#microsoft.graph.commsNotifications",
  "value": [
    {
      "@odata.type": "#microsoft.graph.commsNotification",
      "changeType": "updated",
      "resourceUrl": "/communications/calls/57DAB8B1894C409AB240BD8BEAE78896",
      "resourceData": {
        "@odata.type": "#microsoft.graph.call",
        "@odata.id": "/communications/calls/57DAB8B1894C409AB240BD8BEAE78896",
        "@odata.etag": "W/\"5445\"",
        "state": "established"
      }
    }
  ]
}

Note: Call establishing/established notifications may arrive out of order.

Notification - content sharing started

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

{
  "@odata.type": "#microsoft.graph.commsNotifications",
  "value": [
    {
      "@odata.type": "#microsoft.graph.commsNotification",
      "changeType": "created",
      "resourceUrl": "/communications/calls/421f4c00-4436-4c3a-9d9a-c4924cf98e67/contentsharingsessions/2765eb15-01f8-47c6-b12b-c32111a4a86f"
    }
  ]
}

Notification - content sharing ended

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

{
  "@odata.type": "#microsoft.graph.commsNotifications",
  "value": [
    {
      "@odata.type": "#microsoft.graph.commsNotification",
      "changeType": "deleted",
      "resourceUrl": "/communications/calls/421f4c00-4436-4c3a-9d9a-c4924cf98e67/contentsharingsessions/2765eb15-01f8-47c6-b12b-c32111a4a86f"
    }
  ]
}

Example 3: Answer a policy-based recording call

Under the Policy-based recording scenario, before a participant under policy joins a call, an incoming call notification will be sent to the bot associated with the policy. The join information can be found under the botData property. The bot can then choose to answer the call and update the recording status accordingly.

When participantCapacity is specified in the Answer request for a policy-based recording notification, subsequent participant joining event belonging to the same policy group will be sent out as participantJoiningNotification instead of new incoming call notification, until number of participants that current call instance is handling has reached the number specified in participantCapacity.

The following is an example of the incoming call notification that a bot would receive in this case.

{
   "@odata.type":"#microsoft.graph.commsNotifications",
   "value":[
      {
         "@odata.type":"#microsoft.graph.commsNotification",
         "changeType":"created",
         "resource":"/app/calls/e71f0300-9c1f-4d99-b5f4-2722e877d497",
         "resourceUrl":"/communications/calls/e71f0300-9c1f-4d99-b5f4-2722e877d497",
         "resourceData":{
            "@odata.type":"#microsoft.graph.call",
            "state":"incoming",
            "direction":"incoming",
            "source":{
               "@odata.type":"#microsoft.graph.participantInfo",
               "id":"90fad2ce-8989-41a1-8a66-f6636e629a2a",
               "identity":{
                  "@odata.type":"#microsoft.graph.identitySet",
                  "user":{
                     "@odata.type":"#microsoft.graph.identity",
                     "id":"8A34A46B-3D17-4ADC-8DCE-DC4E7D572698",
                     "identityProvider":"AAD"
                  }
               },
               "endpointType":"default",
               "region":"amer"
            },
            "targets":[
               {
                  "@odata.type":"#microsoft.graph.invitationParticipantInfo",
                  "identity":{
                     "@odata.type":"#microsoft.graph.identitySet",
                     "applicationInstance":{
                        "@odata.type":"#microsoft.graph.identity",
                        "id":"832899f8-2ea1-4604-8413-27bd2892079f",
                        "identityProvider":"AAD"
                     }
                  },
                  "endpointType":"default",
                  "id":"4520a1a5-5394-5a41-aa12-9ee6fa18cfc8",
                  "region":null,
                  "languageId":null
               }
            ],
            "meetingInfo":{
               "@odata.type":"#microsoft.graph.tokenMeetingInfo",
               "token":"join token"
            },
            "tenantId":"932899f8-2ea1-4604-8413-27bd2892079f",
            "myParticipantId":"1520a1a5-5394-4a41-aa72-9ee6fa18cfc8",
            "callChainId":"05f2f70f-3a9c-47c1-80a9-cc79e91d8cec",
            "incomingContext":{
               "@odata.type":"#microsoft.graph.incomingContext",
               "sourceParticipantId":"30fad2ce-8989-41a1-8a66-f6636e629a2a",
               "observedParticipantId":"30fad2ce-8989-41a1-8a66-f6636e629a2a"
            },
            "id":"e71f0300-9c1f-4d99-b5f4-2722e877d497",
            "applicationMetadata":{
               "botData":{
                  "mediaHostedRegion":"USEA",
                  "user":{
                     "participationMethod":"callee",
                     "clientLocation":"US"
                  },
                  "otherSideUser":{
                     "id":"971f0300-9c1f-4d99-b5f4-2722e877d490",
                     "participantId":"3520a1a5-5394-4a41-aa72-9ee6fa18cfc8",
                     "tenantId":"1540a1a5-2394-4a41-aa72-9ee6fa18cfc8",
                     "onBehalfOf":{
                        "id":"871f0300-9c1f-4d99-b5f4-2722e877d490"
                     },
                     "participationMethod":"caller",
                     "clientLocation":"EUNO"
                  },
                  "inviteReasons":[
                     "PolicyBasedRecording"
                  ],
                  "policyIdentifier":"Test Policy",
                  "pairedRecorders":[
                     {
                        "id":"471f0300-5c1f-4d99-b5f4-2722e877d490",
                        "participantId":"371f0300-2c1f-4d99-b5f4-2722e877d490"
                     }
                  ],
                  "otherRecorders":[
                     {
                        "id":"671f0300-9c1f-4d99-b5f4-2722e877d490",
                        "participantId":"a71f0300-ec1f-4d99-b5f4-2722e877d490"
                     }
                  ]
               }
            }
         }
      }
   ]
}