diff --git a/library/RAW_NS.ttcnpp b/library/RAW_NS.ttcnpp
index d601ccd..8f986e4 100644
--- a/library/RAW_NS.ttcnpp
+++ b/library/RAW_NS.ttcnpp
@@ -468,6 +468,28 @@
 	}
 }
 
+/* perform inbound SNS-DELETE procedure */
+function f_incoming_sns_del(integer idx_del, uint8_t w_sig := 1, uint8_t w_user := 1, integer idx := 0, template (omit) NsCause cause := omit)
+runs on RAW_NS_CT {
+	log("f_incoming_sns_del(idx=", idx, ")");
+	var PDU_NS rx;
+	var NSVCConfiguration nsvc_cfg := g_nsconfig.nsvc[idx_del];
+
+	if (nsvc_cfg.provider.ip.address_family == AF_INET) {
+		var template (omit) IP4_Elements v4_elem := { ts_SNS_IPv4(nsvc_cfg.provider.ip.remote_ip,
+								     nsvc_cfg.provider.ip.remote_udp_port,
+								     w_sig, w_user) };
+		rx := f_ns_exp(tr_SNS_DEL(g_nsconfig.nsei, ?, omit, v4 := v4_elem), idx);
+	} else {
+		var template (omit) IP6_Elements v6_elem := { ts_SNS_IPv6(nsvc_cfg.provider.ip.remote_ip,
+								     nsvc_cfg.provider.ip.remote_udp_port,
+								     w_sig, w_user) };
+		rx := f_ns_exp(tr_SNS_DEL(g_nsconfig.nsei, ?, omit, omit, v6_elem), idx);
+	}
+	NSCP[idx].send(ts_SNS_ACK(g_nsconfig.nsei, rx.pDU_SNS_Delete.transactionID));
+}
+
+
 function f_outgoing_sns_del(integer idx_del, uint8_t w_sig := 1, uint8_t w_user := 1, integer idx := 0)
 runs on RAW_NS_CT {
 	log("f_outgoing_sns_del(idx_del=", idx_del, ")");