Get All Cuncurrent call info and hangout all of them!

Hi every one
I use Php AGI_AsteriskManager . and remotely connect to asterisk AMI with this Php code :

require_once(‘phpagi.php’);
require_once(‘phpagi-asmanager.php’);

$hostM="203.106.97.237";
$userM="admin";
$passM="00000000";

$am = new AGI_AsteriskManager();
$am->connect($hostM,$userM,$passM))

and I want to get all concurrent call information and hangup this call . how ?
witch function help me to do this ?
thanks

RTM: voip-info.org/wiki/view/Asterisk+manager+API