Create Call

Creates a new outbound phone call.

Request URL

POSThttps://voice.bandwidth.com/api/v2/accounts/{accountId}/calls/

Basic Authentication

Bandwidth's Voice API leverages Basic Authentication with your Dashboard API Credentials. Read more about how Bandwidth secures endpoints in the Security & Credentials document.

Supported Parameters

Parameter Description Mandatory
from A Bandwidth phone number on your account the call should come from (must be in E.164 format, like +15555551212). Yes
to The number to call (must be an E.164 formatted number, like +15555551212 Yes
applicationId The id of the application to associate this call with, for billing purposes. Yes
answerUrl The full URL to send the Answer event to when the called party answers. This endpoint should return the first BXML document to be executed in the call. Yes
answerMethod (optional) The HTTP method to use for the request to answerUrl. GET or POST. Default value is POST. No
disconnectUrl (optional) The URL to send the Disconnect event to when the call ends. This event does not expect a BXML as response. No
disconnectMethod (optional) The HTTP method to use for the request to disconnectUrl. GET or POST. Default value is POST. No
username (optional) The username to send in the HTTP request to answerUrl and disconnectUrl. No
password (optional) The password to send in the HTTP request to answerUrl and disconnectUrl. No
callTimeout (optional) This is the timeout (in seconds) for the callee to answer the call. Can be any numeric value (including decimals) between 1 and 300. Default: 30 No
tag (optional) A custom string that will be sent with this and all future callbacks unless overwritten by a future tag attribute or cleared.

May be cleared by setting tag=""

Max length 256 characters.		 No

NOTE: Any error that causes the call to be hung up (for example invalid BXML or rate limiting) will be delivered to the disconnectUrl via a Disconnect event. This is currently the only way to receive user errors, so while disconnectUrl is not mandatory, we highly recommend providing it so that user errors can be delivered.

Example 1 of 1: Create an outbound phone call

curl -X POST \
    --url 'https://voice.bandwidth.com/api/v2/accounts/{accountId}/calls' \
    -u '{username}:{password}' \
    -H 'Content-type: application/json' \
    --data-raw '
    {
      "from"          : "+15555551212",
      "to"            : "+15555551313",
      "answerUrl"     : "http://www.myapp.com/hello",
      "applicationId" : "7fc9698a-b04a-468b-9e8f-91238c0d0086"
    }'

Responds

HTTP/1.1 201
Content-type: application/json
Location: https://voice.bandwidth.com/api/v2/accounts/55555555/calls/c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d

{
    "from"             : "+19195551212",
    "to"               : "+19195551313",
    "applicationId"    : "7fc9698a-b04a-468b-9e8f-91238c0d0086",
    "callId"           : "c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d",
    "callUrl"          : "https://voice.bandwidth.com/api/v2/accounts/55555555/calls/c-95ac8d6e-1a31c52e-b38f-4198-93c1-51633ec68f8d",
    "callTimeout"      : 30,
    "answerUrl"        : "http://www.myapp.com/hello",
    "answerMethod"     : "POST",
    "disconnectUrl"    : null,
    "disconnectMethod" : "POST",
    "username"         : null,
    "password"         : null,
    "tag"              : null
}

ApiCreateCallRequest apiCreateCallRequest = new ApiCreateCallRequest();
apiCreateCallRequest.From = "+19195551212";
apiCreateCallRequest.To = "+19195551313";
apiCreateCallRequest.AnswerUrl = "http://www.myapp.com/hello";
apiCreateCallRequest.ApplicationId = VOICE_APPLICATION_ID; //string

var response = voiceClient.CreateCall(VOICE_ACCOUNT_ID, apiCreateCallRequest);
Console.WriteLine(response.Data.CallId);

body = ApiCreateCallRequest.new
body.from = "+19195551212"
body.to = "+19195551313"
body.answer_url = "http://www.myapp.com/hello"
body.application_id = "7fc9698a-b04a-468b-9e8f-91238c0d0086"

begin
    result = voice_client.create_call("55555",body: body)
    puts result.data.call_id
rescue Exception => e
    puts e
end

body = ApiCreateCallRequest()
body.mfrom = "+19195551212"
body.to = "+19195551313"
body.answer_url = "http://www.myapp.com/hello"
body.application_id = "7fc9698a-b04a-468b-9e8f-91238c0d0086"

try:
    result = voice_client.create_call("55555", body)
    print(result.data.call_id)
except Exception as e:
    print(e)

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