MSC: Verify CSFB INDICATOR is present in CLEAR COMMAND
When a CSFB voice call is cleared by the MSC, it must include the
CSFB INDICATOR in order to trigger the BSC to perform actions
required for Fast Return to LTE.
This patch changes TC_sgsap_lu_and_mt_call() and
TC_bssap_lu_sgsap_lu_and_mt_call() to ensure the CSFB INDICATOR IE
is present as expected.
Change-Id: I6ce3a34f85aca7143cf7925cb9319bc679e8d395
diff --git a/msc/BSC_ConnectionHandler.ttcn b/msc/BSC_ConnectionHandler.ttcn
index 7b88192..b041007 100644
--- a/msc/BSC_ConnectionHandler.ttcn
+++ b/msc/BSC_ConnectionHandler.ttcn
@@ -646,13 +646,18 @@
setverdict(pass);
}
-function f_call_hangup(inout CallParameters cpars, boolean release_by_ms)
+function f_call_hangup(inout CallParameters cpars, boolean release_by_ms, boolean is_csfb := false)
runs on BSC_ConnHdlr {
var MobileIdentityLV mi;
var MNCC_PDU mncc;
var MgcpCommand mgcp_cmd;
var boolean respond_to_dlcx;
+ var template PDU_BSSAP t_clear := tr_BSSMAP_ClearCommand;
+
+ if (is_csfb) {
+ t_clear := tr_BSSMAP_ClearCommandCSFB;
+ }
MNCC.send(ts_MNCC_DISC_req(cpars.mncc_callref, valueof(ts_MNCC_cause(23))));
BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_CC_DISC(cpars.transaction_id)));
@@ -673,7 +678,7 @@
/* clearing of radio channel */
interleave {
- [] BSSAP.receive(tr_BSSMAP_ClearCommand) {
+ [] BSSAP.receive(t_clear) {
BSSAP.send(ts_BSSMAP_ClearComplete);
BSSAP.receive(BSSAP_Conn_Prim:MSC_CONN_PRIM_DISC_IND);
}