void empathy_tp_call_mute_input (EmpathyTpCall *call, gboolean is_muted);
void empathy_tp_call_start_tone (EmpathyTpCall *call, TpDTMFEvent event);
void empathy_tp_call_stop_tone (EmpathyTpCall *call);
+gboolean empathy_tp_call_has_dtmf (EmpathyTpCall *call);
G_END_DECLS