By default CDRCat will process Asterisk files in the following expected layout:
+-------------+--------------+------+-----+---------------------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------------+--------------+------+-----+---------------------+----------------+
| calldate | datetime | NO | | 0000-00-00 00:00:00 | |
| clid | varchar(80) | NO | | | |
| src | varchar(80) | NO | | | |
| dst | varchar(80) | NO | | | |
| dcontext | varchar(80) | NO | | | |
| channel | varchar(80) | NO | | | |
| dstchannel | varchar(80) | NO | | | |
| lastapp | varchar(80) | NO | | | |
| lastdata | varchar(80) | NO | | | |
| duration | int(11) | NO | | 0 | |
| billsec | int(11) | NO | | 0 | |
| disposition | varchar(45) | NO | | | |
| amaflags | int(11) | NO | | 0 | |
| accountcode | varchar(20) | NO | | | |
| uniqueid | varchar(32) | NO | | | |
| userfield | varchar(255) | NO | | | |
| export_tag | int(11) | NO | | | |
| id | int(11) | NO | PRI | NULL | auto_increment |
+-------------+--------------+------+-----+---------------------+----------------+
http://svkwiki.com/wiki/Asterisk-Brekeke-File-Layout