Did you run it? Maybe if you told us what error you got?

#!/usr/bin/perl -w
use strict;

ref_test1();

sub ref_test1
{
    print "Here in ref_test1.\n";
    ref_test2("connect");
}

sub ref_test2
{
    my ($type) = @_;
    print "Type: $type\n";
    print "Here in ref_test2\n";
}
[download]

Here in ref_test1.
Type: connect
Here in ref_test2
[download]