diff --git a/src/Network/fgcom.cxx b/src/Network/fgcom.cxx
index 1d312cc..949caf5 100644
--- a/src/Network/fgcom.cxx
+++ b/src/Network/fgcom.cxx
@@ -264,15 +264,15 @@ void FGCom::postinit()
 
     //iaxc_set_callerid("guest","FGCOM");
 
-    iaxc_set_formats (IAXC_FORMAT_SPEEX, IAXC_FORMAT_ULAW|IAXC_FORMAT_SPEEX);
+    //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_GSM, IAXC_FORMAT_ULAW|IAXC_FORMAT_GSM);
 
 
 
 
     //iaxc_set_speex_settings(1, 5, 0, 1, 0, 3);
-    iaxc_set_speex_settings(1,-1,-1,0,8000,3);
+    //iaxc_set_speex_settings(1,-1,-1,0,8000,3);
 
     /*
      void iaxc_set_speex_settings(int decode_enhance, float quality,
@@ -280,8 +280,8 @@ void FGCom::postinit()
 
     */
 
-    iaxc_set_filters(IAXC_FILTER_AGC | IAXC_FILTER_DENOISE);
-    iaxc_set_silence_threshold(_silenceThd_node->getFloatValue());
+    //iaxc_set_filters(IAXC_FILTER_AGC | IAXC_FILTER_DENOISE);
+    //iaxc_set_silence_threshold(_silenceThd_node->getFloatValue());
     
     iaxc_start_processing_thread ();