diff --git a/openbsc/include/openbsc/gsm_data_shared.h b/openbsc/include/openbsc/gsm_data_shared.h
index b3b7b90..011e0aa 100644
--- a/openbsc/include/openbsc/gsm_data_shared.h
+++ b/openbsc/include/openbsc/gsm_data_shared.h
@@ -568,6 +568,8 @@
 const char *gsm_lchans_name(enum gsm_lchan_state s);
 
 
+void gsm_abis_mo_reset(struct gsm_abis_mo *mo);
+
 struct gsm_abis_mo *
 gsm_objclass2mo(struct gsm_bts *bts, uint8_t obj_class,
 	    struct abis_om_obj_inst *obj_inst);
@@ -579,6 +581,9 @@
 gsm_objclass2obj(struct gsm_bts *bts, uint8_t obj_class,
 	     struct abis_om_obj_inst *obj_inst);
 
+/* reset the state of all MO in the BTS */
+void gsm_bts_mo_reset(struct gsm_bts *bts);
+
 uint8_t gsm_ts2chan_nr(const struct gsm_bts_trx_ts *ts, uint8_t lchan_nr);
 uint8_t gsm_lchan2chan_nr(const struct gsm_lchan *lchan);
 
diff --git a/openbsc/src/libbsc/bsc_init.c b/openbsc/src/libbsc/bsc_init.c
index 8654dd7..1be8cb7 100644
--- a/openbsc/src/libbsc/bsc_init.c
+++ b/openbsc/src/libbsc/bsc_init.c
@@ -292,15 +292,9 @@
 					lchan_free(&ts->lchan[lchan_no]);
 				lchan_reset(&ts->lchan[lchan_no]);
 			}
-
-			ts->mo.nm_state.operational = 0;
-			ts->mo.nm_state.availability = 0;
 		}
 
-		trx->mo.nm_state.operational = 0;
-		trx->mo.nm_state.availability = 0;
-		trx->bb_transc.mo.nm_state.operational = 0;
-		trx->bb_transc.mo.nm_state.availability = 0;
+		gsm_bts_mo_reset(trx->bts);
 
 		abis_nm_clear_queue(trx->bts);
 		break;
diff --git a/openbsc/src/libcommon/gsm_data_shared.c b/openbsc/src/libcommon/gsm_data_shared.c
index baf8c35..58e3bed 100644
--- a/openbsc/src/libcommon/gsm_data_shared.c
+++ b/openbsc/src/libcommon/gsm_data_shared.c
@@ -34,6 +34,13 @@
 
 #include <openbsc/gsm_data.h>
 
+void gsm_abis_mo_reset(struct gsm_abis_mo *mo)
+{
+	mo->nm_state.administrative = NM_STATE_NULL;
+	mo->nm_state.operational = NM_OPSTATE_NULL;
+	mo->nm_state.availability = NM_AVSTATE_POWER_OFF;
+}
+
 static void gsm_mo_init(struct gsm_abis_mo *mo, struct gsm_bts *bts,
 			uint8_t obj_class, uint8_t p1, uint8_t p2, uint8_t p3)
 {
@@ -42,9 +49,7 @@
 	mo->obj_inst.bts_nr = p1;
 	mo->obj_inst.trx_nr = p2;
 	mo->obj_inst.ts_nr = p3;
-	mo->nm_state.administrative = NM_STATE_NULL;
-	mo->nm_state.operational = NM_OPSTATE_NULL;
-	mo->nm_state.availability = NM_AVSTATE_POWER_OFF;
+	gsm_abis_mo_reset(mo);
 }
 
 static const struct value_string pchan_names[] = {
@@ -217,6 +222,30 @@
 	return bts;
 }
 
+/* reset the state of all MO in the BTS */
+void gsm_bts_mo_reset(struct gsm_bts *bts)
+{
+	struct gsm_bts_trx *trx;
+	unsigned int i;
+
+	gsm_abis_mo_reset(&bts->mo);
+	gsm_abis_mo_reset(&bts->site_mgr.mo);
+	for (i = 0; i < ARRAY_SIZE(bts->gprs.nsvc); i++)
+		gsm_abis_mo_reset(&bts->gprs.nsvc[i].mo);
+	gsm_abis_mo_reset(&bts->gprs.nse.mo);
+	gsm_abis_mo_reset(&bts->gprs.cell.mo);
+
+	llist_for_each_entry(trx, &bts->trx_list, list) {
+		gsm_abis_mo_reset(&trx->mo);
+		gsm_abis_mo_reset(&trx->bb_transc.mo);
+
+		for (i = 0; i < ARRAY_SIZE(trx->ts); i++) {
+			struct gsm_bts_trx_ts *ts = &trx->ts[i];
+			gsm_abis_mo_reset(&ts->mo);
+		}
+	}
+}
+
 struct gsm_bts_trx *gsm_bts_trx_num(struct gsm_bts *bts, int num)
 {
 	struct gsm_bts_trx *trx;