Чтобы FreePBX заработал с open_basedir в хосте Apache добавляем:
php_admin_value open_basedir "/home/websites/freepbx.your-domain.ru:/usr/share:/tmp:/etc:/var/log/asterisk:/var/lib/asterisk:/var/spool/asterisk"
Иначе ошибка в логах Apache:
PHP Warning: include_once(/etc/asterisk/freepbx.conf): failed to open stream: No such file or directory in /home/websites/freepbx.your-domain.ru/www/admin/config.php on line 100 PHP Warning: include_once(): Failed opening '/etc/asterisk/freepbx.conf' for inclusion (include_path='.:/usr/share/php:/usr/share/pear') in /home/websites/freepbx.your-domain.ru/www/admin/config.php on line 100 PHP Fatal error: Class 'FreePBX' not found in /home/websites/freepbx.your-domain.ru/www/admin/config.php on line 119