When selecting an operator to whom the current operator wants to transfer the call BackgroundCallCard::transferButtonClick

If you are developing integrations for Bitrix24 using AI tools (Codex, Claude Code, Cursor), connect to the MCP server so that the assistant can utilize the official REST documentation.

Scope: telephony

Who can subscribe: any user

The event BackgroundCallCard::transferButtonClick is triggered when a recipient for the call transfer is selected.

The event operates within the context of the application in the placement PAGE_BACKGROUND_WORKER.

What the handler receives

Data is passed to the callback BX24.placement.bindEvent

callback({
            "phoneNumber": "+19001234567",
            "target": "12"
        });

Event handler parameters

Required parameters are marked with *

Parameter
type

Description

phoneNumber*
string

The number of the current call

target*
string

The identifier of the target user for the call transfer

Subscription parameters for the event

Required parameters are marked with *

Name
type

Description

PLACEMENT*
string

The name of the interface event.

For this event — BackgroundCallCard::transferButtonClick

HANDLER*
string

The URL of the event handler to call placement.bindEvent

Code examples

How to Use Examples in Documentation

curl -X POST \
        -H "Content-Type: application/json" \
        -H "Accept: application/json" \
        -d '{"PLACEMENT":"BackgroundCallCard::transferButtonClick","HANDLER":"**your_handler_url_here**"}' \
        "https://**put_your_bitrix24_address.com**/rest/placement.bindEvent?auth=**put_access_token_here**"
        
// This snippet is an ES module: top-level await requires type="module" or a bundler.
        // $b24 is an already-initialized SDK instance (see the SDK "Get started" guide).
        import { Text } from '@bitrix24/b24jssdk'
        import type { B24Frame } from '@bitrix24/b24jssdk'
        
        declare const $b24: B24Frame
        
        try {
          const response = await $b24.actions.v2.call.make<boolean>({
            method: 'placement.bindEvent',
            params: {
              PLACEMENT: 'BackgroundCallCard::transferButtonClick',
              HANDLER: '**your_handler_url_here**',
            },
            requestId: Text.getUuidRfc4122()
          })
        
          // The payload is available only on a successful response
          if (!response.isSuccess) {
            console.error(response.getErrorMessages().join('; '))
          } else {
            const result = response.getData()!.result
            console.info('placement.bindEvent result:', result)
          }
        } catch (error) {
          // Thrown on transport or SDK failures (AjaxError, SdkError, etc.)
          console.error(error)
        }
        
<!-- Load the SDK (UMD build); it is exposed as the global B24Js -->
        <script src="https://unpkg.com/@bitrix24/b24jssdk@1/dist/umd/index.min.js"></script>
        <script>
          async function bindTransferButtonClick() {
            try {
              // Initialize the SDK inside a Bitrix24 frame
              const $b24 = await B24Js.initializeB24Frame()
        
              const response = await $b24.actions.v2.call.make({
                method: 'placement.bindEvent',
                params: {
                  PLACEMENT: 'BackgroundCallCard::transferButtonClick',
                  HANDLER: '**your_handler_url_here**',
                },
                requestId: B24Js.Text.getUuidRfc4122()
              })
        
              // The payload is available only on a successful response
              if (!response.isSuccess) {
                console.error(response.getErrorMessages().join('; '))
                return
              }
        
              const result = response.getData().result
              console.info('placement.bindEvent result:', result)
            } catch (error) {
              // Thrown on transport or SDK failures (AjaxError, SdkError, etc.)
              console.error(error)
            }
          }
        
          document.addEventListener('DOMContentLoaded', bindTransferButtonClick)
        </script>
        
try {
            $response = $b24Service
                ->core
                ->call(
                    'placement.bindEvent',
                    [
                        'PLACEMENT' => 'BackgroundCallCard::transferButtonClick',
                        'HANDLER' => '**your_handler_url_here**'
                    ]
                );
        
            $result = $response
                ->getResponseData()
                ->getResult();
        
            echo 'Success: ' . print_r($result, true);
            processData($result);
        
        } catch (Throwable $e) {
            error_log($e->getMessage());
            echo 'Error: ' . $e->getMessage();
        }
        
BX24.callMethod(
            'placement.bindEvent',
            {
                PLACEMENT: 'BackgroundCallCard::transferButtonClick',
                HANDLER: '**your_handler_url_here**'
            },
            function(result)
            {
                if (result.error())
                {
                    console.error(result.error(), result.error_description());
                }
                else
                {
                    console.log(result.data());
                }
            }
        );
        
require_once('crest.php');
        
        $result = CRest::call(
            'placement.bindEvent',
            [
                'PLACEMENT' => 'BackgroundCallCard::transferButtonClick',
                'HANDLER' => '**your_handler_url_here**'
            ]
        );
        
        echo '<PRE>';
        print_r($result);
        echo '</PRE>';

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