Asterisk is an Open Source PBX and telephony toolkit. . This package provides the following modules for basic MySQL support for the Asterisk PBX: * cdr_addon_mysql.so for logging call detail records (CDR) into a MySQL database * app_addon_sql_mysql.so for querying a MySQL database from your dialplan * res_config_mysql.so for configuring Asterisk using a MySQL database . For more information about the Asterisk PBX, have a look at the Asterisk package.