diff --git a/pcu/GPRS_Components.ttcn b/pcu/GPRS_Components.ttcn
index 5cf9104..2297fb6 100644
--- a/pcu/GPRS_Components.ttcn
+++ b/pcu/GPRS_Components.ttcn
@@ -626,7 +626,7 @@
 function f_ms_tx_data_ind(inout GprsMS ms, octetstring data, uint32_t fn := 0,
 			  template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum)
 runs on MS_BTS_IFACE_CT {
-	f_pcuif_tx_data_ind(data, ms.lqual_cb, fn, nr := nr);
+	f_pcuif_tx_data_ind(data, fn, ms.ta, ms.lqual_cb, nr := nr);
 }
 
 function f_ms_tx_ul_block(inout GprsMS ms, template (value) RlcmacUlBlock ul_data,
@@ -1070,14 +1070,15 @@
 }
 
 /* Enqueue DATA.ind (both TDMA frame and block numbers to be patched) */
-function f_pcuif_tx_data_ind(octetstring data, int16_t lqual_cb := 0, uint32_t fn := 0,
+function f_pcuif_tx_data_ind(octetstring data, uint32_t fn := 0,
+			     TimingAdvance ta := 0, int16_t lqual_cb := 0,
 			     template (value) TsTrxBtsNum nr := ts_TsTrxBtsNum)
 runs on MS_BTS_IFACE_CT {
 	var template RAW_PCU_EventParam ev_param := {tdma_fn := ? };
 	BTS.send(ts_PCUIF_DATA_IND(nr.bts_nr, nr.trx_nr, nr.ts_nr, nr.blk_nr,
 				   sapi := PCU_IF_SAPI_PDTCH, data := data,
 				   fn := fn, arfcn := f_trxnr2arfcn(valueof(nr.trx_nr)),
-				   lqual_cb := lqual_cb));
+				   ta_offs_qbits := ta * 4, lqual_cb := lqual_cb));
 	if (fn != 0) {
 		ev_param := {tdma_fn := fn };
 	}