diff --git a/src/osmo-smlc/sccp_lb_inst.c b/src/osmo-smlc/sccp_lb_inst.c
index bfe8a0e..cea74bf 100644
--- a/src/osmo-smlc/sccp_lb_inst.c
+++ b/src/osmo-smlc/sccp_lb_inst.c
@@ -85,6 +85,36 @@ struct sccp_lb_inst *sccp_lb_init(void *talloc_ctx, struct osmo_sccp_instance *s
 	return sli;
 }
 
+static void handle_notice_ind(struct sccp_lb_inst *sli, const struct osmo_scu_notice_param *ni)
+{
+	struct lb_peer *lbp;
+
+	lbp = lb_peer_find(sli, &ni->calling_addr);
+	if (!lbp) {
+		LOG_SCCP_LB(sli, LOGL_DEBUG, "(calling_addr=%s) N-NOTICE.ind cause=%u='%s' importance=%u didn't match any lb_peer, ignoring\n",
+			    osmo_sccp_addr_dump(&ni->calling_addr),
+			    ni->cause, osmo_sccp_return_cause_name(ni->cause),
+			    ni->importance);
+		return;
+	}
+
+	LOG_LB_PEER(lbp, LOGL_NOTICE, "N-NOTICE.ind cause=%u='%s' importance=%u\n",
+		     ni->cause, osmo_sccp_return_cause_name(ni->cause),
+		     ni->importance);
+
+	switch (ni->cause) {
+	case SCCP_RETURN_CAUSE_SUBSYSTEM_CONGESTION:
+	case SCCP_RETURN_CAUSE_NETWORK_CONGESTION:
+		/* Transient failures (hopefully), keep going. */
+		return;
+	default:
+		break;
+	}
+
+	/* Messages are not arriving to lb_peer. Signal it is unavailable to update local state. */
+	osmo_fsm_inst_dispatch(lbp->fi, LB_PEER_EV_UNAVAILABLE, NULL);
+}
+
 static void handle_pcstate_ind(struct sccp_lb_inst *sli, const struct osmo_scu_pcstate_param *pcst)
 {
 	struct osmo_ss7_instance *cs7 = osmo_sccp_get_ss7(sli->sccp);
@@ -253,6 +283,11 @@ static int sccp_lb_sap_up(struct osmo_prim_hdr *oph, void *_scu)
 		rc = lb_peer_up_l2(sli, peer_addr, false, 0, oph->msg);
 		break;
 
+	case OSMO_PRIM(OSMO_SCU_PRIM_N_NOTICE, PRIM_OP_INDICATION):
+		handle_notice_ind(sli, &prim->u.notice);
+		rc = 0;
+		break;
+
 	case OSMO_PRIM(OSMO_SCU_PRIM_N_PCSTATE, PRIM_OP_INDICATION):
 		handle_pcstate_ind(sli, &prim->u.pcstate);
 		rc = 0;