BSC_Tests_ASCI: Do not expect UPLINK BUSY message

There is no UPLINK BUSY message sent by BSC, if the talker
requests/establishes the uplink. Due to timing reason, the message is
sent by the BTS itself towards the MS.

Change-Id: I2e3b866eca174ae212ea986980d508e48e31fa57
diff --git a/bsc/BSC_Tests_ASCI.ttcn b/bsc/BSC_Tests_ASCI.ttcn
index e72c065..bfc66a9 100644
--- a/bsc/BSC_Tests_ASCI.ttcn
+++ b/bsc/BSC_Tests_ASCI.ttcn
@@ -213,8 +213,9 @@
 			setverdict(fail, "VGCS: No uplink request as expected!");
 			return;
 		}
-		if (not uplink_busy) {
-			setverdict(fail, "VGCS: Uplink not busy as expected!");
+		/* UPLINK BUSY is automatically sent by BTS, but not by BSC. */
+		if (uplink_busy) {
+			setverdict(fail, "VGCS: Uplink set to busy, this is not expected!");
 			return;
 		}
 		log("VGCS: Uplink requested and uplink marked busy as expected!");
@@ -226,8 +227,9 @@
 			setverdict(fail, "VGCS: No uplink request confirm as expected!");
 			return;
 		}
-		if (not uplink_busy) {
-			setverdict(fail, "VGCS: Uplink not busy as expected!");
+		/* UPLINK BUSY is automatically sent by BTS, but not by BSC. */
+		if (uplink_busy) {
+			setverdict(fail, "VGCS: Uplink set to busy, this is not expected!");
 			return;
 		}
 		log("VGCS: Uplink established and uplink marked busy as expected!");