无法检测IVR

Question

我们想通过电话会议提供导师与用户之间的交流功能，因此以下是步骤：

1. 首先，我们将打电话给辅导老师。
2. 例如，我们将向家教提问。请按1以开始与用户的通信。

3. 一旦导师按1，然后在同一通话中将用户与导师加入。

    <?php
    require_once "vendor/autoload.php";
   
    $keypair = new \Nexmo\Client\Credentials\Keypair(
      file_get_contents('private.key__'),
      '############################'
    );
   
    $client = new \Nexmo\Client($keypair);
   
    $ncco = [
      [
        "action"=> "talk",
        "text"=> "Welcome to a Voice API I V R. ",
        "voiceName"=> "Amy",
        "bargeIn"=> false
      ],
      [
        "action"=> "talk",
        "text"=> "please press 1 to communicate with user",
        "voiceName"=> "Amy",
        "bargeIn"=> true
      ],
      [
        "action"=> "input",
        "submitOnHash"=> true,
        "eventUrl"=> ["https://studentzmojo.com/answer"]
      ]
    ];
    $call = new \Nexmo\Call\Call();
    $call->setTo('91XXXXXXXXX')
      ->setFrom('91XXXXXXXXX')
      ->setNcco($ncco);
   
    $response = $client->calls()->create($call);
    echo"<pre>";print_r($response);die;
   echo $response->getId();
   
   ?>