protected function call_controls($post, $phone) {

		$call_button = '<svg version="1.1" fill="green" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="512px" height="512px" viewBox="0 0 512 512" style="enable-background:new 0 0 512 512;" xml:space="preserve"><g><path d="M256,32c123.5,0,224,100.5,224,224S379.5,480,256,480S32,379.5,32,256S132.5,32,256,32 M256,0C114.625,0,0,114.625,0,256 s114.625,256,256,256s256-114.625,256-256S397.375,0,256,0L256,0z M398.719,341.594l-1.438-4.375 c-3.375-10.062-14.5-20.562-24.75-23.375L334.688,303.5c-10.25-2.781-24.875,0.969-32.405,8.5l-13.688,13.688 c-49.75-13.469-88.781-52.5-102.219-102.25l13.688-13.688c7.5-7.5,11.25-22.125,8.469-32.406L198.219,139.5 c-2.781-10.25-13.344-21.375-23.406-24.75l-4.313-1.438c-10.094-3.375-24.5,0.031-32,7.563l-20.5,20.5 c-3.656,3.625-6,14.031-6,14.063c-0.688,65.063,24.813,127.719,70.813,173.75c45.875,45.875,108.313,71.345,173.156,70.781 c0.344,0,11.063-2.281,14.719-5.938l20.5-20.5C398.688,366.062,402.062,351.656,398.719,341.594z"/></g></svg>';
		$hangup_button = '<svg version="1.1" fill="red" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="512px" height="512px" viewBox="0 0 512 512" style="enable-background:new 0 0 512 512;" xml:space="preserve"><g><path d="M256,32c123.5,0,224,100.5,224,224S379.5,480,256,480S32,379.5,32,256S132.5,32,256,32 M256,0C114.625,0,0,114.625,0,256 s114.625,256,256,256s256-114.625,256-256S397.375,0,256,0L256,0z M398.719,341.594l-1.438-4.375 c-3.375-10.062-14.5-20.562-24.75-23.375L334.688,303.5c-10.25-2.781-24.875,0.969-32.405,8.5l-13.688,13.688 c-49.75-13.469-88.781-52.5-102.219-102.25l13.688-13.688c7.5-7.5,11.25-22.125,8.469-32.406L198.219,139.5 c-2.781-10.25-13.344-21.375-23.406-24.75l-4.313-1.438c-10.094-3.375-24.5,0.031-32,7.563l-20.5,20.5 c-3.656,3.625-6,14.031-6,14.063c-0.688,65.063,24.813,127.719,70.813,173.75c45.875,45.875,108.313,71.345,173.156,70.781 c0.344,0,11.063-2.281,14.719-5.938l20.5-20.5C398.688,366.062,402.062,351.656,398.719,341.594z"/></g></svg>';
		$svg_args = array( 'svg'  => array( 'xmlns'   => true, 'width'   => true, 'height'  => true, 'fill'    => true, 'viewbox' => true, ), 'path' => array( 'd' => true ), );

		?>
        <script>
          if (jQuery('.send_message_tabs')) {
            $tab=' <li data-tab="send_message_tab_call"><?php echo esc_html__( 'Call', 'CalculatorsCallsAddon' ); ?></li>';
            jQuery('.send_message_tabs').append($tab);
          }
        </script>

        <div class="send_message__wrapper" id="send_message_tab_call" >
            <div id="call-controls">
                <input data-leadid="<?php echo esc_attr( $post->ID ); ?>" id="phone-number" type="hidden" value="<?php echo esc_attr( $phone ); ?>"/>
                <button class="button" id="button-call" title="<?php echo esc_attr__( 'Call', 'CalculatorsCallsAddon' ); ?>"><?php echo wp_kses( $call_button, $svg_args ); ?></button>
                <button class="button" id="button-hangup" title="<?php echo esc_attr__( 'Hangup', 'CalculatorsCallsAddon' ); ?>"><?php echo wp_kses( $hangup_button, $svg_args ); ?></button>
            </div>
            <div id="log"></div>
        </div>

        <?php
    }