diff --git a/src/rspro_util.h b/src/rspro_util.h
new file mode 100644
index 0000000..87b2b97
--- /dev/null
+++ b/src/rspro_util.h
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <osmocom/core/msgb.h>
+#include <osmocom/rspro/RsproPDU.h>
+#include <osmocom/rspro/ComponentType.h>
+
+#define MAX_NAME_LEN 32
+struct app_comp_id {
+	enum ComponentType type;
+	char name[MAX_NAME_LEN+1];
+	char software[MAX_NAME_LEN+1];
+	char sw_version[MAX_NAME_LEN+1];
+	char hw_manufacturer[MAX_NAME_LEN+1];
+	char hw_model[MAX_NAME_LEN+1];
+	char hw_serial_nr[MAX_NAME_LEN+1];
+	char hw_version[MAX_NAME_LEN+1];
+	char fw_version[MAX_NAME_LEN+1];
+};
+
+struct msgb *rspro_msgb_alloc(void);
+struct msgb *rspro_enc_msg(RsproPDU_t *pdu);
+RsproPDU_t *rspro_dec_msg(struct msgb *msg);
+RsproPDU_t *rspro_gen_ConnectBankReq(const struct app_comp_id *a_cid,
+					uint16_t bank_id, uint16_t num_slots);
+RsproPDU_t *rspro_gen_ConnectClientReq(const struct app_comp_id *a_cid);
+RsproPDU_t *rspro_gen_CreateMappingReq(const ClientSlot_t *client, const BankSlot_t *bank);
+RsproPDU_t *rspro_gen_ConfigClientReq(const ClientSlot_t *client, uint32_t ip, uint16_t port);
+RsproPDU_t *rspro_gen_SetAtrReq(uint16_t client_id, uint16_t slot_nr, const uint8_t *atr,
+				unsigned int atr_len);