diff --git a/include/openbsc/misdn.h b/include/openbsc/misdn.h
new file mode 100644
index 0000000..f3f1980
--- /dev/null
+++ b/include/openbsc/misdn.h
@@ -0,0 +1,26 @@
+/* (C) 2008 by Harald Welte <laforge@gnumonks.org>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#ifndef MISDN_H
+#define MISDN_H
+
+int mi_setup(struct gsm_bts *bts, int cardnr, 
+	     void (cb)(int event, struct gsm_bts *bts));
+
+#endif
diff --git a/src/bsc_hack.c b/src/bsc_hack.c
index 384f25d..ec17877 100644
--- a/src/bsc_hack.c
+++ b/src/bsc_hack.c
@@ -32,6 +32,7 @@
 #include <openbsc/abis_rsl.h>
 #include <openbsc/abis_nm.h>
 #include <openbsc/debug.h>
+#include <openbsc/misdn.h>
 
 /* global pointer to the gsm network data structure */
 static struct gsm_network *gsmnet;