diff --git a/src/Network/fgcom.cxx b/src/Network/fgcom.cxx
index d55d4a1..4481313 100644
--- a/src/Network/fgcom.cxx
+++ b/src/Network/fgcom.cxx
@@ -41,7 +41,7 @@
 #include <iaxclient.h>
 
 
-#define NUM_CALLS 1
+#define NUM_CALLS 4
 #define MAX_GND_RANGE 10.0
 #define MAX_TWR_RANGE 50.0
 #define MAX_RANGE 100.0
@@ -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 ();
 
@@ -373,11 +373,11 @@ void FGCom::postinit()
 
 
     // Do the first call at start
-    //setupCommFrequency();
+    setupCommFrequency();
 
-    //connectToCommFrequency();
+    connectToCommFrequency();
 
-    iaxc_call("guest:guest@fgcom.jingweiht.com/01118300");
+    //iaxc_call("guest:guest@fgcom.jingweiht.com/01118300");
 
     SG_LOG(SG_SOUND, SG_ALERT, "FGCom: postinit 初始化完成");
 
@@ -386,7 +386,7 @@ void FGCom::postinit()
 }
 
 double FGCom::getCurrentCommVolume() const {
-    double rv = 0.4;
+    double rv = 0.8;
 
     if (_speakerLevel_node) {
         rv = rv * _speakerLevel_node->getFloatValue();
@@ -562,7 +562,7 @@ void FGCom::update(double dt)
         return;
     }
 
-    //updateCall();
+    updateCall();
 }
 
 
@@ -591,7 +591,7 @@ void FGCom::shutdown()
 
 void FGCom::valueChanged(SGPropertyNode *prop)
 {
-  return;
+  //return;
   if (prop == _enabled_node) {
       bool isEnabled = prop->getBoolValue();
       if (_enabled == isEnabled) {