diff --git a/library/RTP_Emulation.ttcn b/library/RTP_Emulation.ttcn
index 60f040a..be4bcc4 100644
--- a/library/RTP_Emulation.ttcn
+++ b/library/RTP_Emulation.ttcn
@@ -206,9 +206,7 @@
 	};
 	var template RTP_RecvFrom tr_rtp := tr;
 	var template RTP_RecvFrom tr_rtcp := tr;
-	tr_rtp.connId := g_rtp_conn_id;
 	tr_rtp.msg := { rtp := ? };
-	tr_rtp.connId := g_rtcp_conn_id;
 	tr_rtcp.msg := { rtcp := ? };
 
 	g_iuup_ent := valueof(t_IuUP_Entity(g_cfg.iuup_tx_init));
@@ -225,9 +223,11 @@
 			res := RTP_CodecPort_CtrlFunct.f_IPL4_listen(RTP, g_local_host,
 								g_local_port, {udp:={}});
 			g_rtp_conn_id := res.connId;
+			tr_rtp.connId := g_rtp_conn_id;
 			res := RTP_CodecPort_CtrlFunct.f_IPL4_listen(RTP, g_local_host,
 								g_local_port+1, {udp:={}});
 			g_rtcp_conn_id := res.connId;
+			tr_rtcp.connId := g_rtcp_conn_id;
 			CTRL.reply(RTPEM_bind:{g_local_host, g_local_port});
 		}
 		[] CTRL.getcall(RTPEM_connect:{?,?}) -> param (g_remote_host, g_remote_port) {