my $encoded = $pdu->SMSSubmit( 
                        $servicecenteraddress, 
                        $phonenumber, 
                        $payload, $datacodingscheme, 
                        $validityperiod, 
                        $userdataincluded );
my ($da, $pdu, $ds, $udh, $payload) = $pdu->SMSSubmit_decode( $encoded);