my %hash = ( 'network-type_1|conn_type_1' => [ 1 ],
             'network-type_1|conn_type_2' => [ 2 ],
             'network-type_2|conn_type_1' => [ 3 ],
             'network-type_2|conn_type_2' => [ 4 ] ); 
print $hash{ "$network|$conn" }->[ $pos ];