diff --git a/msc/BSC_ConnectionHandler.ttcn b/msc/BSC_ConnectionHandler.ttcn
index 796b0ce..29cde36 100644
--- a/msc/BSC_ConnectionHandler.ttcn
+++ b/msc/BSC_ConnectionHandler.ttcn
@@ -209,6 +209,7 @@
 	decode_dtap := true,
 	role_ms := true,
 	protocol := RAN_PROTOCOL_BSSAP,
+	use_osmux := false,
 	sccp_addr_local := omit,
 	sccp_addr_peer := omit
 }