diff --git a/opensips/install.sh b/opensips/install.sh
index a7ab970..cdc6dde 100644
--- a/opensips/install.sh
+++ b/opensips/install.sh
@@ -121,6 +121,17 @@ done
 if [ -d "/$ETCDIR/$BINNAME" ];then
 	echo "/$ETCDIR/$BINNAME already exist, make backup."
 	mv /$ETCDIR/$BINNAME /$ETCDIR/$BINNAME.backup-$(date +%F-%H-%M-%S)
+    echo "install $BINNAME.default to /$ETCDIR/default/$BINNAME..."
+    cp $ETCDIR/default/$BINNAME.default /$ETCDIR/default/$BINNAME
+    echo "install $BINNAME.init to /$ETCDIR/init.d/$BINNAME..."
+    cp $ETCDIR/init.d/$BINNAME.init /$ETCDIR/init.d/$BINNAME
+    chmod +x /$ETCDIR/init.d/$BINNAME
+    if [ -n $(command -v apt-get) ]; then
+        bash $ETCDIR/$BINNAME.postinst configure
+    elif [ -n $(command -v yum) ]; then
+        bash $ETCDIR/$BINNAME.postinst configure
+        passwd -l opensips
+    fi
 fi
 cp -r $ETCDIR/$BINNAME /$ETCDIR