AST_DIAL_OPTION_ANSWER_EXEC, /*!< Execute application upon answer in async mode */
AST_DIAL_OPTION_MUSIC, /*!< Play music on hold instead of ringing to the calling channel */
AST_DIAL_OPTION_DISABLE_CALL_FORWARDING, /*!< Disable call forwarding on channels */
+ AST_DIAL_OPTION_PREDIAL, /*!< Execute a predial subroutine before dialing */
AST_DIAL_OPTION_MAX, /*!< End terminator -- must always remain last */
};