diff --git a/bsc/MSC_ConnectionHandler.ttcn b/bsc/MSC_ConnectionHandler.ttcn
index 7a5e55e..b499244 100644
--- a/bsc/MSC_ConnectionHandler.ttcn
+++ b/bsc/MSC_ConnectionHandler.ttcn
@@ -581,6 +581,7 @@
 
 /* initialize all parameters */
 function f_MscConnHdlr_init(integer i, HostName bts, HostName mgw, BSSMAP_FIELD_CodecType codecType) runs on MSC_ConnHdlr {
+	g_trans_id := i * 1000; /* Avoid different MscConnHdlr submitting same trans_id over MGCP-IPA */
 	f_MediaState_init(g_media, i, bts, mgw, codecType);
 	f_MscConnHdlr_init_vty();
 }