diff --git a/src/sccp_helpers.h b/src/sccp_helpers.h
new file mode 100644
index 0000000..089d69a
--- /dev/null
+++ b/src/sccp_helpers.h
@@ -0,0 +1,33 @@
+#pragma once
+#include <unistd.h>
+#include <osmocom/core/msgb.h>
+#include <osmocom/sigtran/sccp_sap.h>
+#include <osmocom/sigtran/sua.h>
+
+int sccp_tx_unitdata(struct osmo_sua_link *link,
+		     const struct osmo_sccp_addr *calling_addr,
+		     const struct osmo_sccp_addr *called_addr,
+		     uint8_t *data, unsigned int len);
+
+int sccp_tx_unitdata_msg(struct osmo_sua_link *link,
+			 const struct osmo_sccp_addr *calling_addr,
+			 const struct osmo_sccp_addr *called_addr,
+			 struct msgb *msg);
+
+void sccp_make_addr_pc_ssn(struct osmo_sccp_addr *addr, uint32_t pc, uint32_t ssn);
+
+int sccp_tx_conn_req(struct osmo_sua_link *link, uint32_t conn_id,
+		     const struct osmo_sccp_addr *calling_addr,
+		     const struct osmo_sccp_addr *called_addr,
+		     uint8_t *data, unsigned int len);
+
+int sccp_tx_conn_req_msg(struct osmo_sua_link *link, uint32_t conn_id,
+			 const struct osmo_sccp_addr *calling_addr,
+			 const struct osmo_sccp_addr *called_addr,
+			 struct msgb *msg);
+
+int sccp_tx_data(struct osmo_sua_link *link, uint32_t conn_id,
+		 uint8_t *data, unsigned int len);
+
+int sccp_tx_data_msg(struct osmo_sua_link *link, uint32_t conn_id,
+		     struct msgb *msg);