diff --git a/utils/fgcom/fgcom_external.cxx b/utils/fgcom/fgcom_external.cxx
index f074f86..4002fc5 100644
--- a/utils/fgcom/fgcom_external.cxx
+++ b/utils/fgcom/fgcom_external.cxx
@@ -135,7 +135,7 @@ int main(int argc, char** argv)
         sgSocket.setBlocking(false);
         
         //lib_setVolume(0.0, 1.0);
-        iaxc_input_level_set(0.1);
+        iaxc_input_level_set(0.0);
         iaxc_output_level_set(0.8);
 
 
@@ -186,8 +186,8 @@ int main(int argc, char** argv)
                         SG_LOG( SG_GENERAL, SG_INFO, "[SPEAK] unmute mic, mute speaker" );
 
                         //lib_setVolume(1.0, 0.0);
-                        iaxc_input_level_set(1.0);
-                        iaxc_output_level_set(0.1);
+                        iaxc_input_level_set(0.8);
+                        iaxc_output_level_set(0.0);
 
 
                     } else {
@@ -195,7 +195,7 @@ int main(int argc, char** argv)
                         //lib_setVolume(0.0, currentData.outputVol);
                         //lib_setVolume(0.0, 1.0);
 
-                        iaxc_input_level_set(0.1);
+                        iaxc_input_level_set(0.0);
                         iaxc_output_level_set(0.8);
 
 
@@ -206,7 +206,7 @@ int main(int argc, char** argv)
                 if(currentData.outputVol != previousData.outputVol)
                     //lib_setVolume(0.0, currentData.outputVol);
 
-                    iaxc_input_level_set(0.1);
+                    iaxc_input_level_set(0.9);
                     iaxc_output_level_set(0.8);
 
 
@@ -581,16 +581,16 @@ bool lib_init()
     }
 
     iaxc_set_callerid( _callsign.c_str(), _app.c_str() );
-    iaxc_set_formats(IAXC_FORMAT_SPEEX, IAXC_FORMAT_ULAW|IAXC_FORMAT_SPEEX);
-//    iaxc_set_formats(IAXC_FORMAT_GSM, IAXC_FORMAT_ULAW|IAXC_FORMAT_GSM);
+//    iaxc_set_formats(IAXC_FORMAT_SPEEX, IAXC_FORMAT_ULAW|IAXC_FORMAT_SPEEX);
+    iaxc_set_formats(IAXC_FORMAT_GSM, IAXC_FORMAT_ULAW|IAXC_FORMAT_GSM);
 
-    iaxc_set_speex_settings(1, 5, 0, 1, 0, 3);
+//    iaxc_set_speex_settings(1, 5, 0, 1, 0, 3);
     iaxc_set_filters(IAXC_FILTER_AGC | IAXC_FILTER_DENOISE);
     iaxc_set_event_callback(iaxc_callback);
     iaxc_start_processing_thread ();
 //    lib_setSilenceThreshold(_silenceThd);
 
-    iaxc_input_level_set(0.1);
+    iaxc_input_level_set(0.0);
     iaxc_output_level_set(0.8);
 
     iaxc_millisleep(30);