diff --git a/drivers/isdn/i4l/isdn_v110.h b/drivers/isdn/i4l/isdn_v110.h
new file mode 100644
index 0000000..08f274b
--- /dev/null
+++ b/drivers/isdn/i4l/isdn_v110.h
@@ -0,0 +1,29 @@
+/* $Id: isdn_v110.h,v 1.1.2.2 2004/01/12 22:37:19 keil Exp $
+ *
+ * Linux ISDN subsystem, V.110 related functions (linklevel).
+ *
+ * Copyright by Thomas Pfeiffer (pfeiffer@pds.de)
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#ifndef _isdn_v110_h_
+#define _isdn_v110_h_
+
+/* 
+ * isdn_v110_encode will take raw data and encode it using V.110 
+ */
+extern struct sk_buff *isdn_v110_encode(isdn_v110_stream *, struct sk_buff *);
+
+/* 
+ * isdn_v110_decode receives V.110 coded data from the stream and rebuilds
+ * frames from them. The source stream doesn't need to be framed.
+ */
+extern struct sk_buff *isdn_v110_decode(isdn_v110_stream *, struct sk_buff *);
+
+extern int isdn_v110_stat_callback(int, isdn_ctrl *);
+extern void isdn_v110_close(isdn_v110_stream * v);
+
+#endif