else {
//set the outbound caller id number if the caller id number is a user
$dial_string .=',origination_caller_id_number=${cond(${from_user_exists} == true ? ${outbound_caller_id_number} : ${origination_caller_id_number})}';
$dial_string .=',effective_caller_id_number=${cond(${from_user_exists} == true ? ${outbound_caller_id_number} : ${effective_caller_id_number})}';
$dial_string .=',origination_caller_id_name=${cond(${from_user_exists} == true ? ${outbound_caller_id_name} : ${origination_caller_id_name})}';
$dial_string .=',effective_caller_id_name=${cond(${from_user_exists} == true ? ${outbound_caller_id_name} : ${effective_caller_id_name})}';
}