diff --git a/src/Makefile.am b/src/Makefile.am
index 857d049..daa91ec 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -88,7 +88,8 @@
 	ta.h \
 	sba.h \
 	rlc.h \
-	decoding.h
+	decoding.h \
+	llc.h
 
 osmo_pcu_SOURCES = pcu_main.cpp
 
diff --git a/src/llc.h b/src/llc.h
new file mode 100644
index 0000000..3144362
--- /dev/null
+++ b/src/llc.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2013 by Holger Hans Peter Freyther
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#define LLC_MAX_LEN 1543
+
+/**
+ * I represent the LLC data to a MS
+ */
+struct gprs_llc {
+	void init();
+	void reset();
+	void reset_frame_space();
+
+	void enqueue(struct msgb *llc_msg);
+	struct msgb *dequeue();
+
+	void update_frame(struct msgb *msg);
+	void put_frame(const uint8_t *data, size_t len);
+	void clear(BTS *bts);
+
+	uint8_t frame[LLC_MAX_LEN]; /* current DL or UL frame */
+	uint16_t index; /* current write/read position of frame */
+	uint16_t length; /* len of current DL LLC_frame, 0 == no frame */
+	struct llist_head queue; /* queued LLC DL data */
+};
+
diff --git a/src/tbf.h b/src/tbf.h
index 374a289..9bb40a3 100644
--- a/src/tbf.h
+++ b/src/tbf.h
@@ -19,6 +19,7 @@
 #pragma once
 
 #include "gprs_rlcmac.h"
+#include "llc.h"
 
 #include <stdint.h>
 
@@ -30,7 +31,6 @@
  * TBF instance
  */
 
-#define LLC_MAX_LEN 1543
 #define RLC_MAX_SNS 128 /* GPRS, must be power of 2 */
 #define RLC_MAX_WS  64 /* max window size */
 #define RLC_MAX_LEN 54 /* CS-4 including spare bits */
@@ -85,27 +85,6 @@
 #define GPRS_RLCMAC_FLAG_TO_DL_ASS	7
 #define GPRS_RLCMAC_FLAG_TO_MASK	0xf0 /* timeout bits */
 
-/**
- * I represent the LLC data to a MS
- */
-struct gprs_llc {
-	void init();
-	void reset();
-	void reset_frame_space();
-
-	void enqueue(struct msgb *llc_msg);
-	struct msgb *dequeue();
-
-	void update_frame(struct msgb *msg);
-	void put_frame(const uint8_t *data, size_t len);
-	void clear(BTS *bts);
-
-	uint8_t frame[LLC_MAX_LEN]; /* current DL or UL frame */
-	uint16_t index; /* current write/read position of frame */
-	uint16_t length; /* len of current DL LLC_frame, 0 == no frame */
-	struct llist_head queue; /* queued LLC DL data */
-};
-
 struct gprs_rlcmac_tbf {
 
 	static void free_all(struct gprs_rlcmac_trx *trx);