MERGE: DTMF recognition via ASR modules (implemented in UniMRCP)

src/include/switch_module_interfaces.h

@@ -400,6 +400,8 @@ struct switch_asr_interface {
 	switch_status_t (*asr_disable_grammar) (switch_asr_handle_t *ah, const char *name);
 	/*! function to disable all grammars to the asr interface */
 	switch_status_t (*asr_disable_all_grammars) (switch_asr_handle_t *ah);
+	/*! function to feed DTMF to the ASR */
+	switch_status_t (*asr_feed_dtmf) (switch_asr_handle_t *ah, const switch_dtmf_t *dtmf, switch_asr_flag_t *flags);
 };
 
 /*! an abstract representation of an asr speech interface. */