diff --git a/serval.h b/serval.h
index 8c62a088..ff33a098 100644
--- a/serval.h
+++ b/serval.h
@@ -1144,11 +1144,13 @@ typedef struct overlay_mdp_addrlist {
 
 #define MDP_VOMPEVENT 7
 #define VOMP_MAX_CALLS 16
+/* elements sorted by size for alignment */
 typedef struct overlay_mdp_vompevent {
   /* Once a call has been established, this is how the MDP/VoMP server
      and user-end process talk about the call. */
   unsigned int call_session_token;
   unsigned long long audio_sample_endtime;
+  unsigned long long audio_sample_starttime;
   unsigned long long last_activity;
 #define VOMPEVENT_RINGING (1<<0)
 #define VOMPEVENT_CALLENDED (1<<1)
@@ -1165,9 +1167,9 @@ typedef struct overlay_mdp_vompevent {
 #define VOMPEVENT_CALLINFO (1<<11)
   unsigned int flags;
   unsigned short audio_sample_bytes;
+  unsigned char audio_sample_codec;  
   unsigned char local_state;
   unsigned char remote_state;
-  unsigned char audio_sample_codec;
   /* list of codecs the registering party is willing to support
        (for VOMPEVENT_REGISTERINTEREST) */
   unsigned char supported_codecs[257];
diff --git a/vomp.c b/vomp.c
index e8f026b5..ea70ffa4 100644
--- a/vomp.c
+++ b/vomp.c
@@ -1159,6 +1159,14 @@ int app_vomp_monitor(int argc, const char *const *argv, struct command_line_opti
 		fprintf(stderr," %s",vomp_describe_codec(i));	    
 
 	    fprintf(stderr,"\n");
+	    if (rx.vompevent.audio_sample_codec) {
+	      fprintf(stderr,"    attached audio sample: codec=%s, len=%d\n",
+		      vomp_describe_codec(rx.vompevent.audio_sample_codec),
+		      rx.vompevent.audio_sample_bytes);
+	      fprintf(stderr,"    sample covers %lldms - %lldms of call.\n",
+		      rx.vompevent.audio_sample_starttime,
+		      rx.vompevent.audio_sample_endtime);
+	    }
 	    break;
 	  default:
 	    fprintf(stderr,"Unknown message (type=0x%02x)\n",rx.packetTypeAndFlags);