provided by Star2Billing S.L.

It looks like the port directive in a2billing.conf is not being parsed to be used in function pg_connect.

In /etc/a2billing.conf, I'm specifying port = 9999, but it isn't actually being used to connect to the database.

If I hack the following file:
admin/lib/adodb/drivers/adodb-postgres64.inc.php

and add
$str .= " port=9999";
after the line
if ($db) $str .= " dbname=".$db; //this is on line 670

then a2billing can connect.