diff --git a/utils/fgcom/fgcom_external.cxx b/utils/fgcom/fgcom_external.cxx
index 2727f0a..fb2864d 100644
--- a/utils/fgcom/fgcom_external.cxx
+++ b/utils/fgcom/fgcom_external.cxx
@@ -475,7 +475,7 @@ std::string computePhoneNumber(double freq, std::string icao, bool atis)
 
     sprintf( exten,
              "%02d%02d%02d%02d%02d%06d",
-             prefix,
+             01,
              tmp[0],
              tmp[1],
              tmp[2],
@@ -485,7 +485,7 @@ std::string computePhoneNumber(double freq, std::string icao, bool atis)
 
     sprintf( exten,
              "%02d%06d",
-             prefix,
+             01,
              (int) (freq * 1000 + 0.5) );
     exten[8] = '\0';
 
@@ -497,6 +497,9 @@ std::string computePhoneNumber(double freq, std::string icao, bool atis)
               _password.c_str(),
               _server.c_str(),
               exten);
+
+    SG_LOG(SG_SOUND, SG_ALERT, "FGCom: computePhoneNumber:" << phoneNumber << "   icao:" << icao);
+
     return phoneNumber;
 }