diff --git a/bts/BTS_Tests_SMSCB.ttcn b/bts/BTS_Tests_SMSCB.ttcn
index 874acb4a5..ac7ec9f73 100644
--- a/bts/BTS_Tests_SMSCB.ttcn
+++ b/bts/BTS_Tests_SMSCB.ttcn
@@ -570,6 +570,24 @@ testcase TC_sms_cb_cmd_sdcch8_multi() runs on test_CT {
 	f_TC_smscb(pars);
 }
 
+/* transmit multiple commands of each 4 blocks on CBCH EXTD */
+testcase TC_sms_cb_cmd_sdcch4_extd_multi() runs on test_CT {
+	var CbchTestPars pars := {
+		use_sdcch4 := true,
+		basic := valueof(t_CbchPC({})),
+		extended := valueof(t_CbchPC(msgs_3m_4b_norm))
+	};
+	f_TC_smscb(pars);
+}
+testcase TC_sms_cb_cmd_sdcch8_extd_multi() runs on test_CT {
+	var CbchTestPars pars := {
+		use_sdcch4 := false,
+		basic := valueof(t_CbchPC({})),
+		extended := valueof(t_CbchPC(msgs_3m_4b_norm))
+	};
+	f_TC_smscb(pars);
+}
+
 /* transmit SMSCB COMMAND with SCHEDULE payload */
 testcase TC_sms_cb_cmd_sdcch4_schedule() runs on test_CT {
 	var CbchTestPars pars := {