After you update call configuration, WhatsApp users may take up to 7 days to reflect those changes. Most users refresh much sooner. You can force an immediate refresh in WhatsApp by entering the chat window with business and open the chat info page. Regardless of WhatsApp client behavior, the semantics of settings are still honored on the server side.

Request syntax

POST /<PHONE_NUMBER_ID>/settings

Endpoint parameters

Placeholder	Description	Sample Value
`<PHONE_NUMBER_ID>` Integer	Required ID of the business phone number for which you are updating Calling API settings.	`106540352242922`

Request body

{
  "calling": {
    "status": "ENABLED",
    "call_icon_visibility": "DEFAULT",
    "call_icons": {
      "restrict_to_user_countries": [
        "US",
        "BR"
      ]
    },
    "call_hours": {
      "status": "ENABLED",
      "timezone_id": "America/Manaus",
      "weekly_operating_hours": [
        {
          "day_of_week": "MONDAY",
          "open_time": "0400",
          "close_time": "1020"
        },
        {
          "day_of_week": "TUESDAY",
          "open_time": "0108",
          "close_time": "1020"
        }
      ],
      "holiday_schedule": [
        {
          "date": "2026-01-01",
          "start_time": "0000",
          "end_time": "2359"
        }
      ]
    },
    "callback_permission_status": "ENABLED",
    "sip": {
      "status": "ENABLED | DISABLED (default)",
      "servers": [
        {
          "hostname": SIP_SERVER_HOSTNAME,
          "port": SIP_SERVER_PORT,
          "request_uri_user_params": {
            "KEY1": "VALUE1",
            "KEY2": "VALUE2"
          }
        }
      ]
    },
    "audio": {
      "additional_codecs": ["PCMA", "PCMU"]
    }
  }
}

Body parameters

Parameter	Description	Sample Value
`status` String	Optional Enable or disable the Calling API for the given business phone number.	`“ENABLED”` `“DISABLED”`
`call_icon_visibility` String	Optional Configure whether the WhatsApp call button icon displays for users when chatting with the business. View call icon visibility behavior details below	View call icon visibility behavior details below
`call_icons` String	Optional Configure whether WhatsApp call button icon displays for users when chatting with the business. View call icons visibility behavior details below	View call icons behavior details below
`call_hours` JSON object	Optional Allows you to specify and trigger call settings for incoming calls based on your timezone, business operating hours, and holiday schedules. Any previously configured values in `call_hours` will be replaced with the values passed in the request body of this API call. View call hours behavior details below	View call hours behavior details below
`callback_permission_status` String	Optional Configure whether a WhatsApp user is prompted with a call permission request after calling your business. Note: The call permission request is triggered from either a missed or connected call. View callback permission status behavior details below	`“ENABLED”` `“DISABLED”`
`sip` JSON object	Optional Configure call signaling via signal initiation protocol (SIP). Note: When SIP is enabled, you cannot use calling related endpoints and will not receive calling related webhooks. Learn how to configure and use SIP call signaling	View Configure SIP settings on business phone number
`audio` JSON object	Optional Configure call audio codec settings. Opus is the default codec and is always present. View audio codec details below	"audio": { "additional_codecs": [ "PCMA", "PCMU" ] }

Calling status

When the status parameter is set to “ENABLED”, calling features are enabled for the business phone number. WhatsApp client applications will render the call button icon in both the business chat and business chat profile.

When the status parameter is set to “DISABLED”, calling features are disabled, and both the business chat and business chat profile do not display the call button icon.

Updates to status will update the call button icon in existing business chats in near real-time when the business phone number is in the WhatsApp user’s contacts.

Otherwise, updates are real-time for a limited number of users in conversation with the business, and are eventual for the rest of the conversations.

Call button icon visibility

When Calling API features are enabled for a business number, you can still choose whether to show the call button icon or not by using the call_icon_visibility parameter. Note: Disabling call button icon visibility does not disable a WhatsApp user’s ability to make unsolicited calls to your business.

The behavior for supported options is as follows:

DEFAULT

The Call button icon will be displayed in the chat menu bar and the business info page, allowing for unsolicited calls to the business by WhatsApp users.

Screenshot showing call button icon displayed in WhatsApp chat

DISABLE_ALL

The call button icon is hidden in the chat menu bar and the business info page, and all other entry points external to the chat are also disabled. Consumers cannot make unsolicited calls to the business.

Your business can still send interactive messages or template messages with a Calling API CTA button.

Screenshot showing hidden call button icon in WhatsApp chat

Callback permissions

Calling a WhatsApp user requires explicit permission from the user. One way to obtain calling permissions is to request permission when a WhatsApp user calls your business.

You can configure the call permission UI to automatically show in the WhatsApp user’s client app when they call your business number. The user may change their permission selection at any time.

Diagram showing callback permissions flow in WhatsApp

Call icons

With the call_icons setting, you can specify the countries where these icons should show up.

"call_icons": {
  "restrict_to_user_countries": [
    "US",
    "BR"
  ]
}

Parameter	Description	Sample Values
`restrict_to_user_countries` List of Strings	Optional Restrict the visibility of call icons to these countries. NOTE: For example if you restrict it to “US,” then it will apply to all the people who have a US registered phone number. These people could be physically located inside or outside of the USA.	Restrict to US and Brazil: "restrict_to_user_countries": [ "US", "BR" ] No restriction: "restrict_to_user_countries": []

Call hours

With the call_hours setting, you can specify the timezone, business operating hours, and holiday schedules that will be enforced for all user-initiated calls.

Configuring this setting restricts calls only to available weekly hours you configure. User-initiated calls are unavailable outside of the weekly hours and holiday schedules you set.

The WhatsApp client app will show users an option to chat with the business, or request a callback, if callback_permission_status is ENABLED. The user will also be shown the next available calling slot on the option screen.

Screenshot showing call hours unavailable message in WhatsApp

"call_hours": {
  "status": "ENABLED",
  "timezone_id": "America/Manaus",
  "weekly_operating_hours": [
    {
      "day_of_week": "MONDAY",
      "open_time": "0400",
      "close_time": "1020"
    },
    {
      "day_of_week": "TUESDAY",
      "open_time": "0108",
      "close_time": "1020"
    }
  ],
  "holiday_schedule": [
    {
      "date": "2026-01-01",
      "start_time": "0000",
      "end_time": "2359"
    }
  ]
}

Parameter Description Sample Values

status

String

Required

Enable or disable the call hours for the business.

If call hours are disabled, the business is considered open all 24 hours of the day, 7 days a week.

“ENABLED”

“DISABLED”

timezone_id

String

Required

The timezone that the business is operating within.

Learn more about supported values for timezone_id

“America/Menominee”

“Asia/Singapore”

weekly_operating_hours

List of JSON object

Required

The operating hours schedule for each day of the week.

Each entry is a JSON object with 3 key/value pairs:

day_of_week — (Enum) [Required]

The day of the week.

Can take one of seven values: "MONDAY", “TUESDAY”, “WEDNESDAY”, “THURSDAY”, “FRIDAY”, “SATURDAY”, “SUNDAY”

open_time

close_time — (Integer) [Required]

Opening and closing times represented in 24 hour format, for example "1130" = 11:30AM

Maximum of 2 entries allowed per day of week

open_time must be before close_time

Overlapping entries not allowed

{
"day_of_week": "MONDAY",
"open_time": "0400",
"close_time": "1020"
},
{
"day_of_week":"TUESDAY",
"open_time": "0108",
"close_time": "1020"
}
...

holiday_schedule

String

Optional

An optional override to the weekly schedule.

Up to 20 overrides can be specified.

Note: If holiday_schedule is not passed in the request, then the existing holiday_schedule will be deleted and replaced with an empty schedule.

date — (String) [Required]

Date for which you want to specify the override.

YYYY-MM-DD format.

open_time

close_time — (Integer) [Required]

Opening and closing times represented in 24 hour format, for example, ”1130” = 11:30AM

Maximum of 2 entries allowed per day of week

open_time must be before close_time

Overlapping entries not allowed

{
"date": "2026-01-01",
"start_time": "0000",
"end_time": "2359",
}
...

Audio codec

Opus is the default audio codec for all WhatsApp calls. You can enable G.711 (PCMA/PCMU) codecs for interoperability with legacy telephony systems or PSTN gateways.

Guidelines and considerations

Opus is the recommended codec. Opus delivers higher audio quality with lower bandwidth usage and is the default for all WhatsApp calls. Use Opus unless you have a specific requirement for G.711.

G.711 requires transcoding. When a G.711 codec is negotiated, audio is transcoded between Opus (on the WhatsApp user side) and G.711 (on the business side), which can add latency to the call.

G.711 has lower audio quality. G.711 encodes audio at a fixed 64 kbps without advanced compression, resulting in lower fidelity compared to Opus.

G.711 uses more bandwidth. G.711 requires approximately 64 kbps per direction, while Opus achieves comparable or better quality at significantly lower bitrates.

Use G.711 only when necessary. The primary use case is interoperability with legacy telephony infrastructure and PSTN gateways that do not support Opus.

"audio": {
  "additional_codecs": ["PCMA", "PCMU"]
}

Parameter	Description	Sample Values
`additional_codecs` List of Strings	Optional Enable additional audio codecs. Supported values: `"PCMA"` (G.711 A-law), `"PCMU"` (G.711 µ-law). Opus is always enabled by default and cannot be removed. After enabling additional codecs, they can be selected during SDP codec negotiation according to RFC 3264.	"additional_codecs": [ "PCMA", "PCMU" ] No additional codecs: "additional_codecs": []

Success response

{
  "success": true
}

Error response

Possible errors that can occur:

Permissions/Authorization errors

Invalid status

Invalid schedule for call_hours

Holiday given in call_hours is a past date

Timezone is invalid in call_hours

weekly_operating_hours in call_hours cannot be empty

Date format in holiday_schedule for call_hours is invalid

More than 2 entries not allowed in weekly_operating_hours schedule in call_hours

Overlapping schedule in call_hours is not allowed

View Calling API Error Codes and Troubleshooting for more information

View general Cloud API Error Codes here

Get phone number calling settings

Use this endpoint to check the configuration of your Calling API feature settings.

This endpoint can return information for other Cloud API feature settings.

Request syntax

GET /<PHONE_NUMBER_ID>/settings

Endpoint parameters

Parameter	Description	Sample Value
`<PHONE_NUMBER_ID>` Integer	Required ID of the business phone number for which you are getting Calling API settings.	`106540352242922`

App permission required

whatsapp_business_management: Advanced access is required to use the API for end business clients

Response body

{
  "calling": {
    "status": "ENABLED",
    "call_icon_visibility": "DEFAULT",
    "callback_permission_status": "ENABLED",
    "call_hours": {
      "status": "ENABLED",
      "timezone_id": "[REDACTED]",
      "weekly_operating_hours": [
        {
          "day_of_week": "MONDAY",
          "open_time": "0400",
          "close_time": "1020"
        },
        {
          "day_of_week": "TUESDAY",
          "open_time": "0108",
          "close_time": "1020"
        }
      ],
      "holiday_schedule": [
        {
          "date": "2026-01-01",
          "start_time": "0000",
          "end_time": "2359"
        }
      ]
    },
    "sip": {
      "status": "ENABLED",
      "servers": [
        {
          "hostname": "[REDACTED]",
          "sip_user_password": "[REDACTED]"
        }
      ]
    },
    "audio": {
      "additional_codecs": ["PCMA", "PCMU"]
    }
  },
  <Other non-calling feature configuration...>
}

Include SIP user password in response

Optionally, you can include SIP user credentials in your response body by adding the SIP credentials query parameter in the POST request:

GET /<PHONE_NUMBER_ID>/settings?include_sip_credentials=true

Where the response will look like this:

{
  "calling": {
    ... // other calling api settings
    "sip": {
      "status": "ENABLED",
      "servers": [
        {
          "hostname": "sip.example.com",
          "sip_user_password": "{SIP_USER_PASSWORD}"
        }
      ]
    }
  }
}

Response details

The Settings API returns Calling API settings, along with other configuration information for your WhatsApp business phone number.

Learn more about Calling API settings and their values

Response with calling restrictions

If your business has restrictions enforced, the response body contains information about the restriction along with other calling API settings.

 {
   "calling": {
     ... // other calling api settings
     "restrictions": {
       "restrictions_list": [
         {
           "type": "[RESTRICTED_BUSINESS_INITIATED_CALLING|RESTRICTED_USER_INITIATED_CALLING]",
           "reason": "Business|User initiated calling capability has been temporarily disabled for this phone number due to high negative feedback from users.",
           "expiration": 1754072386
         }
       ]
     }
   }
}

Parameter Description

Parameter	Description
`<restrictions>` JSON Object	The restrictions object contains the following values: `restriction_list` (JSON Object): list of currently imposed restrictions with the following values `type` (string) - for calling restriction, this would have the value of `RESTRICTED_BUSINESS_INITIATED_CALLING` or `RESTRICTED_USER_INITIATED_CALLING` `reason` (string) - description of restriction `expiration` (Integer) - The UNIX time at which the restriction will expire in UTC timezone

<restrictions>

JSON Object

The restrictions object contains the following values: restriction_list (JSON Object): list of currently imposed restrictions with the following values
type (string) - for calling restriction, this would have the value of RESTRICTED_BUSINESS_INITIATED_CALLING or RESTRICTED_USER_INITIATED_CALLING

reason (string) - description of restriction

expiration (Integer) - The UNIX time at which the restriction will expire in UTC timezone

Error response

Possible errors that can occur:

Permissions/Authorization errors

View Calling API Error Codes and Troubleshooting for more information

View general Cloud API Error Codes here

Call settings in WhatsApp Manager

You can also control your call settings via WhatsApp Manager⁠.

To access calling controls in WhatsApp Manager:

Click on Account tools > Phone numbers panel

Click the gear icon next to the phone number you are using for calling

Click the Calls tab

Screenshot of WhatsApp Manager call settings interface

Configure and use call signaling via session initiation protocol (SIP)

Session Initiation Protocol (SIP) is a signaling protocol used for initiating, maintaining, modifying, and terminating real-time communication sessions between two or more endpoints. You can send and receive call signals using SIP instead of Graph API endpoints.

Learn more about how to use and configure SIP

Settings update webhooks

You can subscribe to a new webhook subscription field account_settings_update to get notified on updates to phone number settings.

You’ll be notified even for your own updates

Currently, only changes to calling settings are supported. Under the calling object, only changes to these fields are observed: status, call_icon_visibility, callback_permission_status, sip.status, and srtp_key_exchange_protocol.

Steps to get started

Set up your webhook subscription and subscribe to the account_settings_update field.

The same app should also be subscribed to the WhatsApp Business Account of your business phone number.

Your app should have whatsapp_business_management permission to receive the webhooks. Using access token for the same app, if you’re able to get settings successfully, your app is good to receive the webhooks too.

Webhook payload

{
    "object": "whatsapp_business_account",
    "entry": [
        {
            "id": "whatsapp-business-account-id",
            "changes": [
                {
                    "value": {
                        "messaging_product": "whatsapp",
                        "timestamp": "1671644824",
                        "type": "[phone_number_settings]",
                        "phone_number_settings": {
                            "phone_number_id": "phone-number-id",
                            "calling": {
                                "status": "ENABLED",
                                "call_icon_visibility": "DEFAULT",
                                "callback_permission_status": "ENABLED",
                                "call_hours": {
                                    "status": "ENABLED",
                                    "timezone_id": "[REDACTED]",
                                    "weekly_operating_hours": [
                                        {
                                            "day_of_week": "MONDAY",
                                            "open_time": "0400",
                                            "close_time": "1020"
                                        },
                                        {
                                            "day_of_week": "TUESDAY",
                                            "open_time": "0108",
                                            "close_time": "1020"
                                        }
                                    ],
                                    "holiday_schedule": [
                                        {
                                            "date": "2026-01-01",
                                            "start_time": "0000",
                                            "end_time": "2359"
                                        }
                                    ]
                                },
                                "sip": {
                                    "status": "ENABLED",
                                    "servers": [
                                        {
                                            "hostname": "[REDACTED]",
                                            "port": SIP_SERVER_PORT
                                        }
                                    ]
                                }
                            }
                        }
                    },
                    "field": "account_settings_update"
                }
            ]
        }
    ]
}

Webhook values

Placeholder	Description
`messaging_product` String	Always `whatsapp` for now
`timestamp` Integer	Time when the settings got updated
`type` String	Type of the change. Currently only `PHONE_NUMBER_SETTINGS`
`phone_number_settings` Object	This field is present if the type is `PHONE_NUMBER_SETTINGS`. Currently only `calling` sub-field under this is supported.
`phone_number_settings.phone_number_id` String	The phone number id, whose settings got updated
`phone_number_settings.calling` Object	This is present only if fields related to `calling` are updated. It’s null otherwise. When present, the payload is same as Get settings API

Calling restrictions for user feedback

If your calls receive a high negative user feedback, such as blocks and reports, business initiated calling, user initiated calling, or both functionalities on your phone number can be restricted.

Early warning

You will be notified when the business phone number is close to being paused as an early warning. The early warning notifications will be communicated via below channels

Email

Enforcement emails are sent to the email addresses of all users and admins associated with the business. If you did not receive an email, confirm which email you have designated as the contact email for your app and make sure that it is active, can receive new email, and does not flag the email as junk or spam mail.

Webhook

A webhook will be sent on the account_update field:

{
  "object": "whatsapp_business_account",
  "entry": [
    {
      "id": "0",
      "time": 1623862418,
      "changes": [
        {
          "field": "account_update",
          "value": {
            "phone_number": "PN",
            "event": "ACCOUNT_VIOLATION",
            "violation_info": {
               "violation_type": "[LOW_BUSINESS_INITIATED_CALLING_QUALITY|LOW_USER_INITIATED_CALLING_QUALITY]",
            }
          }
        }
      ]
    }
  ]
}

If either business or user initiated calling are close to being paused, you will receive a webhook for the respective violation type. Refer account_update for information about the webhook.

Pause in calling functionality

Once the negative user feedback reaches a threshold, Cloud API will automatically restrict calling functionality on your phone number for a period of 7 days. While paused the calling phone number will be unable to

Make business initiated calls to users

Send call permissions requests

Once your phone number has been paused, notifications will be communicated via below channels.

Note: Any call permissions approved or declined by the users while paused, will still be valid.

Email

Webhook

A webhook will be sent on the account_update field:

{
  "object": "whatsapp_business_account",
  "entry": [
    {
      "id": "0",
      "time": 1641848059,
      "changes": [
        {
          "field": "account_update",
          "value": {
            "phone_number": "PN",
            "event": "ACCOUNT_RESTRICTION",
            "restriction_info": [
              {
                "restriction_type": "RESTRICTED_BUSINESS_INITIATED_CALLING",
                "expiration": 1641848057
              }
            ]
          }
        }
      ]
    }
  ]
}

Refer account_update for information about the webhook.

Pause in user initiated calling functionality

Once the negative user feedback reaches a threshold, Cloud API will automatically restrict user initiated calling functionality on your phone number for a period of 7 days. While paused the calling phone number will be unable to

Receive calls from users

Have call icon visible

Once your phone number has been paused, notifications will be communicated via below channels.

Email

Webhook

A webhook will be sent on the account_update field:

{
  "object": "whatsapp_business_account",
  "entry": [
    {
      "id": "0",
      "time": 1641848059,
      "changes": [
        {
          "field": "account_update",
          "value": {
            "phone_number": "PN",
            "event": "ACCOUNT_RESTRICTION",
            "restriction_info": [
              {
                "restriction_type": "RESTRICTED_USER_INITIATED_CALLING",
                "expiration": 1641848057
              }
            ]
          }
        }
      ]
    }
  ]
}

Refer account_update for information about the webhook.

Calling restrictions for low call pickup rates

When calling is enabled on your business phone number, you are expected to pick up calls that users place to you.

If a significant number of calls placed to your calling-enabled business phone number are not picked up, you will be notified and expected to make a change.

What happens if you do not pick up calls

Warning via Email: You receive an email notification with options to change how you handle incoming calls.

Calling becomes restricted on the business phone number: The calling button will be hidden from users.

How to mitigate the situation

If you receive a warning

Continue allowing users to call:

Please identify and address the cause of calls not being picked up and make sure you are properly resourced to handle expected call volumes.

Hide call buttons for user-initiated calls:

You can do so either by working with your partner or going to WhatsApp Manager⁠ > Account tools > Phone numbers > select Phone number [WA phone number] > Calls > toggle off Display call buttons.

Turn off calling altogether:

You can do so either by working with your partner or going to WhatsApp Manager⁠ > Account tools > Phone numbers > select Phone number [WA phone number] > Calls > toggle off Allow voice calls.

If the call button is hidden for the business phone number

Re-display calling buttons:

Please identify and address the cause of calls not being picked up and make sure you are properly resourced to handle expected call volumes.

Next, display the calling buttons by either working with your partner or going to WhatsApp Manager⁠ > Account tools > Phone numbers > select Phone number [WA phone number] > Calls > toggle on Display call buttons.

Turn off calling altogether:

You can do so either by working with your partner or going to WhatsApp Manager⁠ > Account tools > Phone numbers > select Phone number [WA phone number] > Calls > toggle off Allow voice calls.

Webhooks

Warning webhook

[
  {
    "object": "whatsapp_business_account",
    "entry": [
      {
        "id": "0",
        "time": 1641848059,
        "changes": [
          {
            "field": "account_update",
            "value": {
              "phone_number": "16505552771",
              "event": "ACCOUNT_VIOLATION",
              "violation_info": {
                "violation_type": "USER_INITIATED_CALLS_LOW_PICKUP_RATE",
                "remediation": "Please identify and address the cause of user-initiated calls not being picked up and make sure the business is properly resourced to handle expected call volumes."
              }
            }
          }
        ]
      }
    ]
  }
]

Enforcement webhook

[
  {
    "object": "whatsapp_business_account",
    "entry": [
      {
        "id": "0",
        "time": 1641848059,
        "changes": [
          {
            "field": "account_update",
            "value": {
              "phone_number": "16505552771",
              "event": "ACCOUNT_RESTRICTION",
              "restriction_info": [
                {
                  "restriction_type": "RESTRICTED_USER_INITIATED_CALLING_CALL_BUTTON_HIDDEN",
                  "remediation": "The call button has been hidden due to low pickup rates. Please identify and address the cause of user-initiated calls not being picked up.  Next, display the calling buttons by either working with your partner or going to WhatsApp Manager > Account tools > Phone numbers > select Phone number > Calls > toggle on Display call buttons"
                }
              ]
            }
          }
        ]
      }
    ]
  }
]

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