diff --git a/pcu/PCU_Tests.ttcn b/pcu/PCU_Tests.ttcn
index 6c59917..d7ab69b 100644
--- a/pcu/PCU_Tests.ttcn
+++ b/pcu/PCU_Tests.ttcn
@@ -3400,6 +3400,60 @@
 	f_shutdown(__BFILE__, __LINE__, final := true);
 }
 
+/* Test scenario where MS wants to request a new UL TBF using a DL (EGPRS) ACK/NACK
+ * transmitted on ul slot provided by its DL TBF.
+ * See 3GPP TS 44.060 sec 9.3.2.4.2 "Non-extended uplink TBF mode" */
+function f_TC_ul_tbf_reestablish_with_pkt_dl_ack_nack(boolean use_egprs) runs on RAW_PCU_Test_CT {
+	var GprsMS ms;
+	var octetstring data := f_rnd_octstring(10);
+	var RlcmacDlBlock dl_block;
+	var template RlcmacDlBlock rej_tmpl;
+	var uint32_t dl_fn;
+	var uint32_t sched_fn;
+	var template (value) MSRadioAccessCapabilityV_BSSGP racap_tmpl;
+
+	if (use_egprs == true) {
+		racap_tmpl := bssgp_ms_racap_egprs_def;
+	} else {
+		racap_tmpl := bssgp_ms_racap_gprs_def;
+	}
+
+	/* Initialize NS/BSSGP side */
+	f_init_bssgp();
+	/* Initialize GPRS MS side */
+	f_init_gprs_ms();
+	ms := g_ms[0]; /* We only use first MS in this test */
+	/* Initialize the PCU interface abstraction */
+	f_init_raw(testcasename());
+
+	/* Establish BSSGP connection to the PCU */
+	f_bssgp_establish();
+	f_bssgp_client_llgmm_assign(TLLI_UNUSED, ms.tlli);
+
+	/* SGSN sends some DL data, PCU will page on CCCH (PCH) */
+	BSSGP[0].send(ts_BSSGP_DL_UD(ms.tlli, data, racap_tmpl));
+	f_ms_exp_dl_tbf_ass_ccch(ms, PCU_IF_SAPI_PCH);
+
+	/* Wait timer X2002 and DL block is available after CCCH IMM ASS: */
+	f_sleep(X2002);
+	f_rx_rlcmac_dl_block_exp_data(dl_block, dl_fn, data, 0);
+
+	/* ACK the DL block, asking for new UL TBF by including ChanReqDesc */
+	f_dltbf_ack_block(ms.dl_tbf, dl_block, '1'B);
+	f_ms_tx_ul_block(ms, f_dltbf_ts_RLCMAC_DL_ACK_NACK(ms.dl_tbf, use_egprs, ts_ChannelReqDescription()),
+			 f_dl_block_ack_fn(dl_block, dl_fn));
+
+	/* We should receive a Pkt Ul ASS */
+	f_ms_rx_pkt_ass_pacch(ms, sched_fn, tr_RLCMAC_UL_PACKET_ASS);
+	f_shutdown(__BFILE__, __LINE__, final := true);
+}
+testcase TC_ul_tbf_reestablish_with_pkt_dl_ack_nack() runs on RAW_PCU_Test_CT {
+	f_TC_ul_tbf_reestablish_with_pkt_dl_ack_nack(false);
+}
+testcase TC_ul_tbf_reestablish_with_pkt_dl_ack_nack_egprs() runs on RAW_PCU_Test_CT {
+	f_TC_ul_tbf_reestablish_with_pkt_dl_ack_nack(true);
+}
+
 /* Test CS paging over the BTS<->PCU socket.
  * When a (class B or C, not A) MS has an active TBF (or is on the PDCH), the MS can not react on CS paging over CCCH.
  * Paging should be send on the PACCH.
@@ -6742,6 +6796,8 @@
 	execute( TC_ul_multislot_tbf_ms_class_from_2phase() );
 	execute( TC_ul_tbf_reestablish_with_pkt_resource_req() );
 	execute( TC_ul_tbf_reestablish_with_pkt_resource_req_n3105_max() );
+	execute( TC_ul_tbf_reestablish_with_pkt_dl_ack_nack() );
+	execute( TC_ul_tbf_reestablish_with_pkt_dl_ack_nack_egprs() );
 
 	execute( TC_multiplex_dl_gprs_egprs() );