diff --git a/bts/BTS_Tests_ASCI.ttcn b/bts/BTS_Tests_ASCI.ttcn
index e0277bd..315b67f 100644
--- a/bts/BTS_Tests_ASCI.ttcn
+++ b/bts/BTS_Tests_ASCI.ttcn
@@ -290,10 +290,54 @@
 	Misc_Helpers.f_shutdown(__BFILE__, __LINE__);
 }
 
+/* A VGCS channel is activated. The BSC sends UPLINK FREE message. The MS sends RACH on VGCS channel.
+ * The MS receives VGCS UPLINK GRAND and establishes layer 2. Then the BSC forces to releases the uplink.
+ */
+private function f_TC_vgcs_talker_est_rel(charstring id) runs on ConnHdlr
+{
+	var octetstring uplink_free := '082B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B2B'O;
+	var octetstring l3 := '01020304'O;
+	template RslLinkId link_id := ts_RslLinkID_DCCH(0);
+	var RSL_Message rm;
+
+	/* Perform link establishment and talker detection. */
+	f_vgcs_talker_detect();
+
+	/* Establish layer 2. It also detects, if RSL Est Ind is received. */
+	f_est_rll_mo(0, valueof(link_id), l3);
+
+	/* Release link by BSC. */
+	RSL.send(ts_RSL_REL_REQ(g_chan_nr, link_id, RSL_REL_MODE_LOCAL));
+
+	log("Send UPLINK FREE.");
+	RSL.send(ts_RSL_UNITDATA_REQ(g_chan_nr, link_id, uplink_free));
+	f_l1_exp_lapdm(tr_LAPDm_Bter_UI(uplink_free));
+	log("Received UPLINK FREE.");
+
+	/* Deactivate and cleanup. */
+	f_vgcs_cleanup();
+}
+testcase TC_vgcs_talker_est_rel() runs on test_CT
+{
+	var template RSL_IE_ChannelMode ch_mode;
+	var ConnHdlrPars pars;
+	var ConnHdlr vc_conn;
+
+	f_init();
+
+	ch_mode := ts_RSL_ChanMode(RSL_CHRT_TCH_F_GROUP, RSL_CMOD_SP_GSM1);
+	pars := valueof(t_Pars(t_RslChanNr_Bm(1), ch_mode));
+	vc_conn := f_start_handler(refers(f_TC_vgcs_talker_est_rel), pars);
+	vc_conn.done;
+
+	Misc_Helpers.f_shutdown(__BFILE__, __LINE__);
+}
+
 control {
 	execute( TC_vbs_notification() );
 	execute( TC_vgcs_uplink_free_and_busy() );
 	execute( TC_vgcs_talker_fail() );
+	execute( TC_vgcs_talker_est_rel() );
 
 }