diff --git a/mgw/MGCP_Test.ttcn b/mgw/MGCP_Test.ttcn
index 9eff8c2..4969a3f 100644
--- a/mgw/MGCP_Test.ttcn
+++ b/mgw/MGCP_Test.ttcn
@@ -1314,6 +1314,63 @@
 		setverdict(pass);
 	}
 
+
+	/* create two local RTP emulations; create two connections on MGW EP, see if
+	 * exchanged data is converted bwtween ts101318 and rfc5993 */
+	testcase TC_ts101318_rfc5993_rtp_conversion() runs on dummy_CT {
+		var RtpFlowData flow[2];
+		var RtpemStats stats[2];
+		var MgcpResponse resp;
+		var MgcpEndpoint ep := c_mgw_ep_rtpbridge & "2@" & c_mgw_domain;
+		var MgcpCallId call_id := '1226'H;
+
+		f_init(ep);
+
+		/* Turn on conversion mode */
+		f_vty_enter_config(MGWVTY);
+		f_vty_transceive(MGWVTY, "mgcp");
+		f_vty_transceive(MGWVTY, "rtp-patch rfc5993hr");
+
+		/* from us to MGW */
+		flow[0] := valueof(t_RtpFlow(mp_local_ip, mp_remote_ip, 111, "GSM-HR-08/8000"));
+		/* bind local RTP emulation sockets */
+		flow[0].em.portnr := 10000;
+		flow[0].rtp_cfg := c_RtpemDefaultCfg;
+		flow[0].rtp_cfg.tx_payload_type := flow[0].pt;
+		flow[0].rtp_cfg.rx_fixed_payload := '0b11b3eede60be4e3ec68838c7b5'O;
+		flow[0].rtp_cfg.tx_fixed_payload := '0b11b3eede60be4e3ec68838c7b5'O;
+		f_flow_create(RTPEM[0], ep, call_id, "sendrecv", flow[0]);
+
+		/* from MGW back to us */
+		flow[1] := valueof(t_RtpFlow(mp_local_ip, mp_remote_ip, 111, "GSM-HR-08/8000"));
+		flow[1].em.portnr := 20000;
+		flow[1].rtp_cfg	:= c_RtpemDefaultCfg;
+		flow[1].rtp_cfg.tx_payload_type := flow[1].pt;
+		flow[1].rtp_cfg.rx_fixed_payload := '000b11b3eede60be4e3ec68838c7b5'O;
+		flow[1].rtp_cfg.tx_fixed_payload := '000b11b3eede60be4e3ec68838c7b5'O;
+		f_flow_create(RTPEM[1], ep, call_id, "sendrecv", flow[1]);
+
+		f_rtpem_mode(RTPEM[1], RTPEM_MODE_BIDIR);
+		f_rtpem_mode(RTPEM[0], RTPEM_MODE_BIDIR);
+
+		f_sleep(1.0);
+
+		f_flow_delete(RTPEM[0]);
+		f_flow_delete(RTPEM[1], ep, call_id);
+
+		stats[0] := f_rtpem_stats_get(RTPEM[0]);
+		stats[1] := f_rtpem_stats_get(RTPEM[1]);
+
+		f_rtpem_stats_err_check(stats[0]);
+		f_rtpem_stats_err_check(stats[1]);
+
+		/* Turn off conversion mode */
+		f_vty_transceive(MGWVTY, "no rtp-patch rfc5993hr");
+
+		setverdict(pass);
+	}
+
+
 	/* TODO: Double-DLCX (no retransmission) */
 
 
@@ -1364,5 +1421,6 @@
 		execute(TC_two_crcx_mdcx_and_rtp());
 		execute(TC_two_crcx_and_unsolicited_rtp());
 		execute(TC_two_crcx_and_one_mdcx_rtp_ho());
+		execute(TC_ts101318_rfc5993_rtp_conversion());
 	}
 }
diff --git a/mgw/expected-results.xml b/mgw/expected-results.xml
index b45ba1f..f5bc1a0 100644
--- a/mgw/expected-results.xml
+++ b/mgw/expected-results.xml
@@ -37,4 +37,5 @@
   <testcase classname='MGCP_Test' name='TC_two_crcx_mdcx_and_rtp' time='MASKED'/>
   <testcase classname='MGCP_Test' name='TC_two_crcx_and_unsolicited_rtp' time='MASKED'/>
   <testcase classname='MGCP_Test' name='TC_two_crcx_and_one_mdcx_rtp_ho' time='MASKED'/>
+  <testcase classname='MGCP_Test' name='TC_ts101318_rfc5993_rtp_conversion' time='MASKED'/>
 </testsuite>