BTS_Tests: add altstep as_dl_sacch_lapdm_ab
Change-Id: I3ba17683892e8aa1694bb6dd32d8b37660020026
diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index 1d3dfe7..3a3d7cc 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -917,6 +917,27 @@
}
}
+/* This altstep triggers on receipt of a Downlink SACCH containing a L2 payload
+ * that matches the given LAPDm frame, as well as the given SACCH L1 header. */
+private altstep as_dl_sacch_lapdm_ab(out SacchL1Header l1h, out LapdmFrameAB frame,
+ template (present) LapdmFrameAB tr_frame := ?,
+ template (present) SacchL1Header tr_l1h := ?,
+ template (present) GsmSapi sapi := ?)
+runs on ConnHdlr {
+ var L1ctlDlMessage dl_msg;
+ template (present) RslLinkId link_id := tr_RslLinkID_SACCH(sapi);
+ template (present) L1ctlDataReq tr_data := {
+ l1header := tr_l1h,
+ l2_payload := decmatch tr_frame
+ };
+
+ [] as_l1ctl_dl_msg(dl_msg, decmatch tr_data, g_chan_nr, link_id) {
+ var octetstring data := dl_msg.payload.data_ind.payload;
+ l1h := dec_SacchL1Header(substr(data, 0, 2));
+ frame := dec_LapdmFrameAB(substr(data, 2, lengthof(data) - 2));
+ }
+}
+
/* This altstep is built on top of as_dl_dcch_lapdm_ab(), and triggers on receipt
* of a LAPDm AB frame with a L3 payload matching the given template. The L3
* payload is treated as PDU_ML3_NW_MS. */