1 files changed, 6 insertions, 0 deletions
diff --git a/zaptel.h b/zaptel.h
index 60a0635..3bf2205 100644
--- a/zaptel.h
+++ b/zaptel.h
@@ -662,6 +662,12 @@ struct zt_versioninfo {
  */
 #define ZT_TRANSCODE_OP		_IOWR(ZT_CODE, 93, int)
 
+/*
+ * VoiceMail Waiting Indication (WMWI) -- implemented by low-level driver
+ * Tell zaptel that a voicemail message is waiting or not.
+ */
+#define ZT_VMWI			_IOWR(ZT_CODE, 94, int)
+
 /* 
  * Startup or Shutdown a span
  */