diff --git a/include/Makefile.am b/include/Makefile.am
index 61e6cf5..16fa506 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -3,4 +3,4 @@
 nobase_include_HEADERS = osmocom/abis/ipa.h osmocom/abis/trau_frame.h	\
  osmocom/abis/ipa_proxy.h osmocom/abis/ipaccess.h osmocom/abis/abis.h	\
  osmocom/abis/subchan_demux.h osmocom/abis/e1_input.h			\
- osmocom/abis/lapd.h osmocom/trau/osmo_ortp.h
+ osmocom/abis/lapd.h osmocom/abis/lapd_pcap.h osmocom/trau/osmo_ortp.h
diff --git a/include/osmocom/abis/lapd.h b/include/osmocom/abis/lapd.h
index 847a597..2457cde 100644
--- a/include/osmocom/abis/lapd.h
+++ b/include/osmocom/abis/lapd.h
@@ -35,6 +35,7 @@
 	struct lapd_profile profile; /* must be a copy */
 
 	struct llist_head tei_list;	/* list of TEI in this LAPD instance */
+	int pcap_fd;			/* PCAP file descriptor */
 };
 
 enum lapd_recv_errors {
diff --git a/include/osmocom/abis/lapd_pcap.h b/include/osmocom/abis/lapd_pcap.h
new file mode 100644
index 0000000..1c0d555
--- /dev/null
+++ b/include/osmocom/abis/lapd_pcap.h
@@ -0,0 +1,11 @@
+#ifndef _LAPD_PCAP_H_
+#define _LAPD_PCAP_H_
+
+#define OSMO_LAPD_PCAP_INPUT	0
+#define OSMO_LAPD_PCAP_OUTPUT	1
+
+int osmo_pcap_lapd_open(char *filename, mode_t mode);
+int osmo_pcap_lapd_write(int fd, int direction, struct msgb *msg);
+int osmo_pcap_lapd_close(int fd);
+
+#endif