twilio - 防止客户端未连接时通话中断

Question

我正在尝试在 Twilio 中设置一些电话号码。当特定客户端连接时，我可以很好地调用它们并正常连接(我使用唯一的 URL 来定义在调用特定号码时应调用哪个客户端...如下所示: https://example.io/my/path/to/the/twiml/?attribute=CLIENT_IDENTIFIER )

当特定客户端未连接到我的应用程序时，就会出现问题。发生这种情况时，系统会发出自动消息，但随后调用就会断开。我希望它像普通电话一样，一直响到接到语音信箱。这就是我遇到的问题。这是我的 PHP:

<?php
declare(strict_types=1);
use Twilio\TwiML\VoiceResponse;

require_once '../../../vendor/autoload.php';

$response = new VoiceResponse();
$response->say('This call may be monitored for quality assurance', 
    ['voice' => 'woman', 'language' => 'us-EN']);
$dial = $response->dial('', [
    'record' => 'record-from-ringing-dual', 
    'recordingStatusCallback' => 'https://example.com/my/callback/'
]);
$dial->client($_GET['CLIENT_IDENTIFIER'], [
    'statusCallbackEvent' => 'completed',
    'statusCallback' => 'https://example.com/my/callback/'
]);

echo $response;

我的状态回调没有被调用，所以我知道调用没有完成。所以我的问题实际上是这样的:

如何让 Twilio 在无法连接到我传递的客户端时不立即断开连接？

Answer 1

这里是 Twilio 开发者布道者。

如果 <Dial>无法连接，那么它将对其 action attribute 创建一个 webhook通过DialCallStatus作为参数。您可以使用更多 TwiML 响应 Webhook 以继续通话。

因此，您的初始 PHP 应该如下所示，并将操作属性添加到 <Dial> :

<?php
declare(strict_types=1);
use Twilio\TwiML\VoiceResponse;

require_once '../../../vendor/autoload.php';

$response = new VoiceResponse();
$response->say('This call may be monitored for quality assurance', 
    ['voice' => 'woman', 'language' => 'us-EN']);
$dial = $response->dial('', [
    'record' => 'record-from-ringing-dual', 
    'recordingStatusCallback' => 'https://example.com/my/callback/',
    'action' => 'https://example.com/my/action/'
]);
$dial->client($_GET['CLIENT_IDENTIFIER'], [
    'statusCallbackEvent' => 'completed',
    'statusCallback' => 'https://example.com/my/callback/'
]);

echo $response;

然后/my/action/可以做这样的事情:

<?php
declare(strict_types=1);
use Twilio\TwiML\VoiceResponse;

require_once '../../../vendor/autoload.php';

$response = new VoiceResponse();
if ($_POST['DialCallStatus'] == 'completed') {
    // the call succeeded, just end it
    $response->hangup();
} else {
  $response->say('The person you are calling cannot be reached right now. Please leave a message', 
      ['voice' => 'woman', 'language' => 'us-EN']);
  $response->record([
      'action' => 'https://example.com/my/callback/'
  ]);
}
echo $response;

请告诉我这是否有帮助。