Environment :
– CentOS 6.4 (64bit)
– FreeSWITCH 1.5.6b git fb238ed 2013-09-13 15:44:10Z
– FusionPBX 3.3

This error will shown if you using https to access FusionPBX

Freeswitch log :

2013-09-14 22:11:43.120093 [ERR] mod_xml_cdr.c:365 Got error [404] posting to web server [http://127.0.0.1/app/xml_cdr/v_xml_cdr_import.php]
2013-09-14 22:11:43.120093 [ERR] mod_xml_cdr.c:372 Retry will be with url [http://127.0.0.1/app/xml_cdr/v_xml_cdr_import.php]
2013-09-14 22:11:43.120093 [ERR] mod_xml_cdr.c:383 Unable to post to web server, writing to file

Fix it :D

vi /usr/local/freeswitch/conf/autoload_configs/xml_cdr.conf.xml

Change http with https (in url parameter) :

Don’t forget to reloadxml in fs_cli :D