Dialplan的xml结构体switch_caller_extension_t

struct switch_caller_extension {
        /*! The name of the extension */
        char *extension_name;
        /*! The number of the extension */
        char *extension_number;
        /*! Pointer to the current application for this extension */
        switch_caller_application_t *current_application;
        /*! Pointer to the last application for this extension */
        switch_caller_application_t *last_application;
        /*! Pointer to the entire stack of applications for this extension */
        switch_caller_application_t *applications;
        struct switch_caller_profile *children;
        struct switch_caller_extension *next;
};