Requesting in the Twitter API using Jquery and Ajax

I'm trying to fetch data from a Twitter page, with no success so far. I got the access token through the PHP Controller, and I intend to use it to make requests.

var token = 'Bearer <?php echo $token['twitter'] ?>';
$.ajax({
    type: 'GET',
    url: "https://api.twitter.com/1.1/statuses/user_timeline.json?screen_name=<?php echo $empresa['twitter']?>",
    crossDomain: true,
    dataType: 'jsonp',
    beforeSend : function( xhr ) {
        xhr.setRequestHeader("Authorization", token );
        xhr.setRequestHeader("User-Agent", "My Twitter App v1.0.23");
        xhr.setRequestHeader("Accept-Encoding", "gzip");
    },
}).done(function(data){
    console.log(data);
});

According to Twitter, the request must contain the following data in its header:

  

GET /1.1/statuses/user_timeline.json?count=100&screen_name=twitterapi HTTP / 1.1

     

Host: api.twitter.com

     

User-Agent: My Twitter App v1.0.23

     

Authorization: Bearer AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA% 2FAAAAAAAAAAAAAAAAAAAA% 3DAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

     

Accept-Encoding: gzip

To confirm if the problem was not the key, I implemented the call in PHP, and everything worked perfectly.

When you access the page that holds the script, the call occurs, and error 401 is returned. According to Twitter:

  

401 Unauthorized

The header that is being inserted into the Ajax call is the same one that was entered in PHP, so what's the problem?