diff --git a/pcu/PCU_Tests.ttcn b/pcu/PCU_Tests.ttcn
index 5ab208bbf..7e27537ca 100644
--- a/pcu/PCU_Tests.ttcn
+++ b/pcu/PCU_Tests.ttcn
@@ -5121,6 +5121,35 @@ testcase TC_rim_ran_info_req_single_rep_no_si() runs on RAW_PCU_Test_CT {
 	f_shutdown(__BFILE__, __LINE__, final := true);
 }
 
+testcase TC_tuwat() runs on RAW_PCU_Test_CT {
+	var GprsMS ms := valueof(t_GprsMS_def);
+	var BTS_PDTCH_Block msg;
+
+	/* Initialize NS/BSSGP side */
+	f_init_bssgp();
+
+	/* Initialize the PCU interface abstraction */
+	f_init_raw(testcasename());
+
+	/* Establish BSSGP connection to the PCU */
+	f_bssgp_establish();
+
+	f_ms_establish_ul_tbf(ms);
+
+	BTS.clear;
+
+	for (var integer i := 0; i < 48; i := i + 1) {
+		var RlcmacDlBlock block;
+		var uint32_t dl_fn;
+
+		f_rx_rlcmac_dl_block(block, dl_fn);
+		log("Rx PDU: ", block);
+		f_sleep(0.5);
+	}
+
+	f_shutdown(__BFILE__, __LINE__, final := true);
+}
+
 control {
 	execute( TC_pcuif_suspend() );
 	execute( TC_pcuif_suspend_active_tbf() );