PAGI\Client\IClient::exec PHP Method

    public function exec($application, array $options = array());

 /**
  * (non-PHPdoc)
  * @see PAGI\CallerId.ICallerId::setCallerPres()
  */
 public function setCallerPres($presentationMode)
 {
     $this->_client->exec('SET', array("CALLERPRES()={$presentationMode}"));
 }