diff --git a/utils/fgcom/fgcom_external.cxx b/utils/fgcom/fgcom_external.cxx
index 6057e3b..0159565 100644
--- a/utils/fgcom/fgcom_external.cxx
+++ b/utils/fgcom/fgcom_external.cxx
@@ -133,7 +133,12 @@ int main(int argc, char** argv)
         sgSocket.open(false);
         sgSocket.bind(_host.c_str(), _port);
         sgSocket.setBlocking(false);
-        lib_setVolume(0.0, 1.0);
+        
+        //lib_setVolume(0.0, 1.0);
+        iaxc_input_level_set(0.1);
+        iaxc_output_level_set(0.8);
+
+
         static char currentPacket[MAXBUFLEN+2], previousPacket[MAXBUFLEN+2];
         struct Data currentData, previousData, previousPosData;
         double currentFreq = -1, previousFreq = -1;
@@ -179,18 +184,31 @@ int main(int argc, char** argv)
                         SG_LOG( SG_GENERAL, SG_INFO, "Select radio " << activeComm << " on " << currentFreq << " MHz" );
                     } else if(currentData.ptt) {
                         SG_LOG( SG_GENERAL, SG_INFO, "[SPEAK] unmute mic, mute speaker" );
-                        lib_setVolume(1.0, 0.0);
+
+                        //lib_setVolume(1.0, 0.0);
+                        iaxc_input_level_set(1.0);
+                        iaxc_output_level_set(0.1);
+
+
                     } else {
                         SG_LOG( SG_GENERAL, SG_INFO, "[LISTEN] mute mic, unmute speaker" );
                         //lib_setVolume(0.0, currentData.outputVol);
-                        lib_setVolume(0.0, 1.0);
+                        //lib_setVolume(0.0, 1.0);
+
+                        iaxc_input_level_set(0.1);
+                        iaxc_output_level_set(0.8);
+
 
 
                     }
                 }
 
                 if(currentData.outputVol != previousData.outputVol)
-                    lib_setVolume(0.0, currentData.outputVol);
+                    //lib_setVolume(0.0, currentData.outputVol);
+
+                    iaxc_input_level_set(0.1);
+                    iaxc_output_level_set(0.8);
+
 
                 if(currentData.silenceThd != previousData.silenceThd)
                     lib_setSilenceThreshold(currentData.silenceThd);
@@ -256,11 +274,17 @@ int main(int argc, char** argv)
         if(mode == OBS) {
             SG_LOG( SG_GENERAL, SG_INFO, "Entering main loop in mode OBS (max duration: 6 hours)" );
             sessionDuration *= 2160; // 6 hours for OBS mode
-            lib_setVolume(0.0, 1.0);
+            //lib_setVolume(0.0, 1.0);
+            iaxc_input_level_set(0.1);
+            iaxc_output_level_set(0.8);
+
             lib_setCallerId("::OBS::");
             num = computePhoneNumber(_frequency, _airport);
         } else {
-            lib_setVolume(1.0, 1.0);
+            //lib_setVolume(1.0, 1.0);
+                        iaxc_input_level_set(1.0);
+                        iaxc_output_level_set(0.8);
+
             if(mode == TEST) {
                 sessionDuration *= 65; // 65 seconds for TEST mode
                 SG_LOG( SG_GENERAL, SG_INFO, "Entering main loop in mode TEST (max duration: 65 seconds)" );
@@ -565,6 +589,12 @@ bool lib_init()
     iaxc_set_event_callback(iaxc_callback);
     iaxc_start_processing_thread ();
     lib_setSilenceThreshold(_silenceThd);
+
+    iaxc_input_level_set(0.1);
+    iaxc_output_level_set(0.8);
+
+    iaxc_millisleep(30);
+
     return true;
 }