diff --git a/utils/fgcom/fgcom_external.cxx b/utils/fgcom/fgcom_external.cxx
index 5a01196..351e1d5 100644
--- a/utils/fgcom/fgcom_external.cxx
+++ b/utils/fgcom/fgcom_external.cxx
@@ -546,12 +546,16 @@ 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_speex_settings(1, 5, 0, 1, 0, 3);
-    iaxc_set_filters(IAXC_FILTER_AGC | IAXC_FILTER_DENOISE);
+//    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_filters(IAXC_FILTER_AGC | IAXC_FILTER_DENOISE);
     iaxc_set_event_callback(iaxc_callback);
     iaxc_start_processing_thread ();
-    lib_setSilenceThreshold(_silenceThd);
+//    lib_setSilenceThreshold(_silenceThd);
     return true;
 }