BSC_Tests: s/f_verify_active_layer3/f_mo_l3_transceive/g

The new name is more concrete and better reflects what the
function does: transmit a MO L3 payload to the IUT over the
A-bis/RSL and receive it back on the A/BSSAP.

Change-Id: Ic2b60b60c49ae7788ce03503b8b867bb9e55244b
Related: OS#3716
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 9672357..2efe2fd 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -4464,7 +4464,7 @@
 	f_shutdown_helper();
 }
 
-private function f_verify_active_layer3() runs on MSC_ConnHdlr
+private function f_mo_l3_transceive() runs on MSC_ConnHdlr
 {
 	/* The old lchan and conn should still be active. See that arbitrary L3
 	 * is still going through. */
@@ -4503,7 +4503,7 @@
 	 * Let's give it a bit extra. */
 	f_sleep(15.0);
 
-	f_verify_active_layer3();
+	f_mo_l3_transceive();
 	f_sleep(1.0);
 }
 testcase TC_ho_out_fail_no_msc_response() runs on test_CT {
@@ -4581,7 +4581,7 @@
 
 	f_sleep(1.0);
 
-	f_verify_active_layer3();
+	f_mo_l3_transceive();
 	f_sleep(1.0);
 
 	setverdict(pass);