diff --git a/openrtx/include/rtx/rtx.h b/openrtx/include/rtx/rtx.h
index 60f37dab..35c0ce0a 100644
--- a/openrtx/include/rtx/rtx.h
+++ b/openrtx/include/rtx/rtx.h
@@ -55,9 +55,14 @@ typedef struct
     uint8_t  can      : 4,  /**< M17 Channel Access Number     */
              _unused  : 4;
 
-    char     source_address[10];      /**< M17 call source address  */
-    char     destination_address[10]; /**< M17 call routing address */
-    bool     invertRxPhase;           /**< M17 RX phase inversion   */
+    char     source_address[10];       /**< M17 call source address    */
+    char     destination_address[10];  /**< M17 call routing address   */
+    bool     invertRxPhase;            /**< M17 RX phase inversion     */
+    bool     lsfOk;                    /**  M17 LSF is valid           */
+    char     M17_dst[10];              /**  M17 LSF destination        */
+    char     M17_src[10];              /**  M17 LSF source             */
+    char     M17_orig[10];             /**  M17 LSF traffic originator */
+    char     M17_refl[10];             /**  M17 LSF reflector module   */
 }
 rtxStatus_t;
 
diff --git a/openrtx/src/rtx/rtx.cpp b/openrtx/src/rtx/rtx.cpp
index b5155a6c..44001cbd 100644
--- a/openrtx/src/rtx/rtx.cpp
+++ b/openrtx/src/rtx/rtx.cpp
@@ -59,6 +59,11 @@ void rtx_init(pthread_mutex_t *m)
     rtxStatus.txToneEn      = 0;
     rtxStatus.txTone        = 0;
     rtxStatus.invertRxPhase = false;
+    rtxStatus.lsfOk         = false;
+    rtxStatus.M17_src[0]    = '\0';
+    rtxStatus.M17_dst[0]    = '\0';
+    rtxStatus.M17_orig[0]   = '\0';
+    rtxStatus.M17_refl[0]   = '\0';
     currMode = &noMode;
 
     /*