add bsc/BSC_Tests_VAMOS.ttcn
BSC_Tests_VAMOS.ttcn is separate from BSC_Tests.ttcn in order to
instruct osmo-bts-omldummy to pass BTS_FEAT_VAMOS == true in the OML BTS
attributes.
Add tests:
TC_chan_act_to_vamos()
TC_mode_modify_to_vamos_fr()
TC_mode_modify_to_vamos_hr()
TC_assign_to_secondary_lchan_fr()
TC_assign_to_secondary_lchan_hr()
TC_vamos_multiplex_tch_f_tch_f()
TC_vamos_multiplex_tch_h_tch_h_tch_h_tch_h()
Change-Id: I2c504099163a30ea102cbd26d3615ca2e5ce1e64
diff --git a/bsc/BSC_Tests_VAMOS.ttcn b/bsc/BSC_Tests_VAMOS.ttcn
new file mode 100644
index 0000000..bf487cf
--- /dev/null
+++ b/bsc/BSC_Tests_VAMOS.ttcn
@@ -0,0 +1,738 @@
+module BSC_Tests_VAMOS {
+
+/* Integration Tests for OsmoBSC
+ * (C) 2021 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
+ * All rights reserved.
+ *
+ * Released under the terms of GNU General Public License, Version 2 or
+ * (at your option) any later version.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * This test suite tests OsmoBSC while emulating both multiple BTS + MS as
+ * well as the MSC. See README for more details.
+ *
+ * There are test cases that run in so-called 'handler mode' and test cases
+ * that run directly on top of the BSSAP and RSL CodecPorts. The "handler mode"
+ * tests abstract the multiplexing/demultiplexing of multiple SCCP connections
+ * and/or RSL channels and are hence suitable for higher-level test cases, while
+ * the "raw" tests directly on top of the CodecPorts are more suitable for lower-
+ * level testing.
+ */
+
+import from BSC_Tests all;
+
+import from Misc_Helpers all;
+import from General_Types all;
+import from Osmocom_Types all;
+import from GSM_Types all;
+import from IPL4asp_Types all;
+
+import from BSSAP_Types all;
+import from RAN_Adapter all;
+import from BSSAP_LE_Adapter all;
+import from BSSAP_LE_CodecPort all;
+import from BSSAP_LE_Types all;
+import from BSSLAP_Types all;
+import from BSSAP_CodecPort all;
+import from BSSMAP_Templates all;
+import from IPA_Emulation all;
+import from IPA_CodecPort all;
+import from IPA_Types all;
+import from IPA_Testing all;
+import from RSL_Types all;
+import from RSL_Emulation all;
+import from MGCP_Emulation all;
+import from MGCP_Templates all;
+import from MGCP_Types all;
+import from MGCP_CodecPort all;
+
+import from Osmocom_CTRL_Functions all;
+import from Osmocom_CTRL_Types all;
+import from Osmocom_CTRL_Adapter all;
+
+import from StatsD_Types all;
+import from StatsD_CodecPort all;
+import from StatsD_CodecPort_CtrlFunct all;
+import from StatsD_Checker all;
+
+import from Osmocom_VTY_Functions all;
+import from TELNETasp_PortType all;
+
+import from MobileL3_CommonIE_Types all;
+import from MobileL3_Types all;
+import from MobileL3_RRM_Types all;
+import from L3_Templates all;
+import from GSM_RR_Types all;
+
+import from SCCP_Templates all;
+import from BSSMAP_Templates all;
+import from BSSMAP_LE_Templates all;
+
+import from SCCPasp_Types all;
+
+import from GSM_SystemInformation all;
+import from GSM_RestOctets all;
+import from TCCConversion_Functions all;
+
+import from RAN_Emulation all;
+import from MSC_ConnectionHandler all;
+
+import from Native_Functions all;
+
+const integer NUM_BTS := 3;
+const integer NUM_MSC := 3;
+
+private function f_rsl_chan_nr_to_subslot(RslChannelNr chan_nr)
+return integer
+{
+ var integer subslot;
+ select (chan_nr) {
+ case (t_RslChanNr_Bm(?)) {
+ /* TCH/F, always subslot 0 */
+ subslot := 0;
+ }
+ case (t_RslChanNr_Lm(?, ?)) {
+ /* TCH/H */
+ subslot := chan_nr.u.lm.sub_chan;
+ }
+ case (t_RslChanNr_Osmo_VAMOS_Bm(?)) {
+ /* TCH/F, always subslot 0 */
+ subslot := 0;
+ }
+ case (t_RslChanNr_Osmo_VAMOS_Lm(?, ?)) {
+ /* TCH/H */
+ subslot := chan_nr.u.lm.sub_chan;
+ }
+ case else {
+ setverdict(fail, "unsupported RslChannelNr type in f_rsl_chan_nr_to_subslot()");
+ mtc.stop;
+ }
+ }
+ return subslot;
+}
+
+private function f_rsl_chan_nr_to_rsl_cbits(RslChannelNr chan_nr)
+return BIT5
+{
+ var BIT5 rsl_cbits;
+ select (chan_nr) {
+ case (t_RslChanNr_Bm(?)) {
+ rsl_cbits := '00001'B;
+ }
+ case (t_RslChanNr_Lm(?, ?)) {
+ rsl_cbits := int2bit(2 + chan_nr.u.lm.sub_chan, 5); /* '0001x'B */
+ }
+ case (t_RslChanNr_Osmo_VAMOS_Bm(?)) {
+ rsl_cbits := '11101'B;
+ }
+ case (t_RslChanNr_Osmo_VAMOS_Lm(?, ?)) {
+ rsl_cbits := int2bit(30 + chan_nr.u.lm.sub_chan, 5); /* '1111x'B */
+ }
+ case else {
+ setverdict(fail, "unsupported RslChannelNr type in f_rsl_chan_nr_to_rsl_cbits()");
+ mtc.stop;
+ }
+ }
+ return rsl_cbits;
+}
+
+private function f_rsl_chan_nr_to_rr_cbits(RslChannelNr chan_nr)
+return BIT5
+{
+ var BIT5 rr_cbits;
+ select (chan_nr) {
+ case (t_RslChanNr_Bm(?)) {
+ rr_cbits := '00001'B;
+ }
+ case (t_RslChanNr_Lm(?, ?)) {
+ rr_cbits := int2bit(2 + chan_nr.u.lm.sub_chan, 5); /* '0001x'B */
+ }
+ case (t_RslChanNr_Osmo_VAMOS_Bm(?)) {
+ rr_cbits := '00001'B;
+ /* In RR, there must *not* be Osmocom specific cbits */
+ }
+ case (t_RslChanNr_Osmo_VAMOS_Lm(?, ?)) {
+ rr_cbits := int2bit(2 + chan_nr.u.lm.sub_chan, 5); /* '0001x'B */
+ /* In RR, there must *not* be Osmocom specific cbits */
+ }
+ case else {
+ setverdict(fail, "unsupported RslChannelNr type in f_rsl_chan_nr_to_rr_cbits()");
+ mtc.stop;
+ }
+ }
+ return rr_cbits;
+}
+
+private function f_rsl_chan_nr_to_chrt(RslChannelNr chan_nr, boolean vamos)
+return RSL_ChanRateType
+{
+ var boolean fr;
+ select (chan_nr) {
+ case (t_RslChanNr_Bm(?)) {
+ fr := true;
+ }
+ case (t_RslChanNr_Lm(?, ?)) {
+ fr := false;
+ }
+ case (t_RslChanNr_Osmo_VAMOS_Bm(?)) {
+ fr := true;
+ }
+ case (t_RslChanNr_Osmo_VAMOS_Lm(?, ?)) {
+ fr := false;
+ }
+ case else {
+ setverdict(fail, "unsupported RslChannelNr type in f_rsl_chan_nr_to_chrt()");
+ mtc.stop;
+ }
+ }
+ if (fr) {
+ if (vamos) {
+ return RSL_CHRT_OSMO_TCH_F_VAMOS;
+ } else {
+ return RSL_CHRT_TCH_F;
+ }
+ } else {
+ if (vamos) {
+ return RSL_CHRT_OSMO_TCH_H_VAMOS;
+ } else {
+ return RSL_CHRT_TCH_H;
+ }
+ }
+}
+
+private function f_lchan_str(integer bts_nr, integer trx_nr, RslChannelNr chan_nr)
+return charstring
+{
+ var integer subslot := f_rsl_chan_nr_to_subslot(chan_nr);
+ return "lchan " & int2str(bts_nr) & " " & int2str(trx_nr) & " " & int2str(chan_nr.tn) & " " & int2str(subslot);
+}
+
+private function f_long_lchan_str(integer bts_nr, integer trx_nr, RslChannelNr chan_nr)
+return charstring
+{
+ var integer subslot := f_rsl_chan_nr_to_subslot(chan_nr);
+ return "bts " & int2str(bts_nr) & " trx " & int2str(trx_nr) & " timeslot " & int2str(chan_nr.tn) & " sub-slot " & int2str(subslot);
+}
+
+private function f_lchan_ensure_established(TELNETasp_PT vty, integer bts_nr, integer trx_nr, RslChannelNr chan_nr)
+{
+ var charstring lchan_str := f_lchan_str(bts_nr, trx_nr, chan_nr);
+ var charstring lchan_info := f_vty_transceive_ret(vty, "show " & lchan_str);
+ if (f_strstr(lchan_info, "State: ESTABLISHED") < 0) {
+ log("'show lchan' replied: ", lchan_info);
+ setverdict(fail, "lchan " & lchan_str & " is not in state ESTABLISHED");
+ mtc.stop;
+ }
+ setverdict(pass);
+}
+
+/* Activate a primary lchan in VAMOS speech mode */
+testcase TC_chan_act_to_vamos() runs on test_CT {
+ f_init_vty();
+
+ f_logp(BSCVTY, "TC_chan_act_to_vamos");
+
+ f_init(1, false);
+ f_sleep(1.0);
+
+ f_vty_transceive(BSCVTY, "bts 0 trx 0 timeslot 1 sub-slot 0 activate-vamos fr");
+
+ var RSL_Message rsl;
+
+ rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_CHAN_ACTIV));
+
+ var RSL_IE_Body chan_mode_ie;
+ if (f_rsl_find_ie(rsl, RSL_IE_CHAN_MODE, chan_mode_ie) == false) {
+ setverdict(fail, "Cannot find RSL_IE_CHAN_MODE");
+ mtc.stop;
+ }
+ if (chan_mode_ie.chan_mode.ch_rate_type != RSL_CHRT_OSMO_TCH_F_VAMOS) {
+ setverdict(fail, "expected chan_mode.ch_rate_type == RSL_CHRT_OSMO_TCH_F_VAMOS");
+ mtc.stop;
+ }
+
+ var RSL_IE_Body osmo_tsc_ie;
+ if (f_rsl_find_ie(rsl, RSL_IE_OSMO_TRAINING_SEQUENCE, osmo_tsc_ie) == false) {
+ setverdict(fail, "Cannot find RSL_IE_OSMO_TRAINING_SEQUENCE");
+ mtc.stop;
+ }
+
+ var RslChannelNr chan_nr := rsl.ies[0].body.chan_nr;
+ f_ipa_tx(0, ts_RSL_CHAN_ACT_ACK(chan_nr, 23+10));
+
+ f_sleep(1.0);
+ f_lchan_ensure_established(BSCVTY, 0, 0, chan_nr);
+
+ f_shutdown_helper();
+}
+
+/* verify that DTAP passes through both ways with the right cbits */
+private function f_verify_dtap() runs on MSC_ConnHdlr
+{
+ var octetstring l3_data := '00010203040506'O;
+ var PDU_BSSAP rx_bssap_dtap;
+
+ /* MS to NW */
+ RSL.send(ts_RSL_DATA_IND(g_chan_nr, valueof(ts_RslLinkID_DCCH(0)), l3_data));
+ BSSAP.receive(tr_BSSAP_DTAP) -> value rx_bssap_dtap;
+ if (not match(rx_bssap_dtap.pdu.dtap, l3_data)) {
+ setverdict(fail, "unexpected L3 data");
+ mtc.stop;
+ }
+
+ /* NW to MS */
+ l3_data := '0800dcba9876543210'O;
+ BSSAP.send(ts_BSSAP_DTAP(l3_data, '00'O));
+ RSL.receive(tr_RSL_DATA_REQ(g_chan_nr, tr_RslLinkID_DCCH(0), l3_data));
+}
+
+
+private function f_est_lchan_and_mode_modify_to_vamos() runs on MSC_ConnHdlr {
+ var PDU_BSSAP ass_cmd := f_gen_ass_req(g_pars.use_osmux);
+ var template PDU_BSSAP exp_compl := f_gen_exp_compl(g_pars.use_osmux);
+
+ /* puzzle together the ASSIGNMENT REQ for given codec[s] */
+ if (mp_bssap_cfg[0].transport == BSSAP_TRANSPORT_AoIP) {
+ ass_cmd.pdu.bssmap.assignmentRequest.codecList := g_pars.ass_codec_list;
+ exp_compl.pdu.bssmap.assignmentComplete.speechCodec.codecElements[0] :=
+ g_pars.ass_codec_list.codecElements[0];
+ if (isvalue(g_pars.expect_mr_s0_s7)) {
+ exp_compl.pdu.bssmap.assignmentComplete.speechCodec.codecElements[0].s0_7 :=
+ g_pars.expect_mr_s0_s7;
+ }
+ }
+ ass_cmd.pdu.bssmap.assignmentRequest.channelType :=
+ f_BSSMAP_chtype_from_codec(g_pars.ass_codec_list.codecElements[0]);
+ log("expecting ASS COMPL like this: ", exp_compl);
+
+ f_establish_fully(ass_cmd, exp_compl);
+
+ f_lchan_ensure_established(BSCVTY, 0, 0, g_chan_nr);
+
+ var charstring current_long_lchan_str := f_long_lchan_str(0, 0, g_chan_nr);
+ f_vty_transceive(BSCVTY, current_long_lchan_str & " modify vamos tsc 2 3");
+
+ var RSL_Message rsl_rr;
+ RSL.receive(tr_RSL_DATA_REQ(g_chan_nr)) -> value rsl_rr;
+
+ var PDU_ML3_NW_MS l3 := dec_PDU_ML3_NW_MS(rsl_rr.ies[2].body.l3_info.payload);
+
+ var integer current_subslot := f_rsl_chan_nr_to_subslot(g_chan_nr);
+
+ template PDU_ML3_NW_MS expect_rr_modify := tr_RRM_ModeModify(
+ tr_ChannelDescription2_V(timeslotNumber := int2bit(g_chan_nr.tn, 3)),
+ tr_ChannelMode_V(mode := 'C1'O /* 1 1 0 0 0 0 0 1 speech full rate or half rate version 1 in VAMOS mode (3GPP TS 44.018) */),
+ extendedTSCSet := tr_ExtendedTSCSet_TV(cSDomainTSCSet := '01'B));
+
+ if (not match(l3, expect_rr_modify)) {
+ log("expected: ", expect_rr_modify);
+ log("got: ", l3);
+ setverdict(fail, "RR channelModeModify message is not as expected");
+ mtc.stop;
+ }
+ f_rsl_reply(ts_RRM_ModeModifyAck(l3.msgs.rrm.channelModeModify.channelDescription,
+ l3.msgs.rrm.channelModeModify.channelMode,
+ l3.msgs.rrm.channelModeModify.extendedTSCSet), rsl_rr);
+
+ var RSL_Message rsl;
+ RSL.receive(tr_RSL_MODE_MODIFY_REQ_with_OSMO_TSC(g_chan_nr, tr_RSL_ChanMode(f_rsl_chan_nr_to_chrt(g_chan_nr, true), RSL_CMOD_SP_GSM1),
+ tsc_set := 1, /* 1 means TSC Set 2 (range 1-4 in spec tables and naming, 0-3 on the wire) */
+ tsc := 3));
+ RSL.send(ts_RSL_MODE_MODIFY_ACK(g_chan_nr));
+ f_sleep(1.0);
+
+ f_lchan_ensure_established(BSCVTY, 0, 0, g_chan_nr);
+ f_verify_dtap();
+}
+
+private function f_TC_mode_modify_to_vamos(charstring id) runs on MSC_ConnHdlr {
+ f_est_lchan_and_mode_modify_to_vamos();
+}
+
+/* Modify a primary lchan into VAMOS speech mode */
+testcase TC_mode_modify_to_vamos_fr() runs on test_CT {
+ var TestHdlrParams pars := f_gen_test_hdlr_pars();
+ var MSC_ConnHdlr vc_conn;
+
+ f_init(1, true);
+ f_sleep(1.0);
+
+ pars.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
+ vc_conn := f_start_handler(refers(f_TC_mode_modify_to_vamos), pars);
+ vc_conn.done;
+ f_shutdown_helper();
+}
+
+/* Modify a primary lchan into VAMOS speech mode */
+testcase TC_mode_modify_to_vamos_hr() runs on test_CT {
+ var TestHdlrParams pars := f_gen_test_hdlr_pars();
+ var MSC_ConnHdlr vc_conn;
+
+ f_init(1, true);
+ f_sleep(1.0);
+
+ pars.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecHR}));
+ vc_conn := f_start_handler(refers(f_TC_mode_modify_to_vamos), pars);
+ vc_conn.done;
+ f_shutdown_helper();
+}
+
+/* Establish a primary lchan, and then do a re-assignment to a VAMOS shadow lchan. */
+private function f_reassign_secondary_to_primary_lchan(RslChannelNr new_chan_nr) runs on MSC_ConnHdlr
+{
+ var integer current_subslot := f_rsl_chan_nr_to_subslot(g_chan_nr);
+
+ var integer new_subslot := f_rsl_chan_nr_to_subslot(new_chan_nr);
+ var BIT5 new_rr_cbits := f_rsl_chan_nr_to_rr_cbits(new_chan_nr);
+
+ activate(as_Media_mgw());
+
+ f_rslem_register(0, new_chan_nr, RSL_PROC);
+ log("f_rslem_register(0, new_chan_nr = ", new_chan_nr, ")");
+
+ f_vty_transceive(BSCVTY, "bts 0 trx 0 timeslot " & int2str(g_chan_nr.tn) & " vamos-sub-slot " & int2str(current_subslot)
+ & " reassign-to trx 0 timeslot " & int2str(new_chan_nr.tn) & " sub-slot " & int2str(new_subslot));
+ /* RSL CHAN ACT is ACKed by RSL emulation */
+
+ var RSL_Message rsl;
+ var RSL_IE_Body ie;
+ var boolean b_unused;
+ interleave {
+ [] RSL.receive(tr_RSL_DATA_REQ(g_chan_nr)) -> value rsl {
+ var PDU_ML3_NW_MS l3 := dec_PDU_ML3_NW_MS(rsl.ies[2].body.l3_info.payload);
+ var template PDU_ML3_NW_MS expect_rr_assignment := tr_RR_AssignmentCommand(
+ desc := tr_ChannelDescription2_V(timeslotNumber := int2bit(new_chan_nr.tn, 3),
+ channelTypeandTDMAOffset := new_rr_cbits),
+ mode := tr_ChannelMode_TV(mode := '01'O
+ /* 0 0 0 0 0 0 0 1 speech full rate or half rate version 1 (3GPP TS 44.018) */),
+ extendedTSCSet := omit);
+ if (not match(l3, expect_rr_assignment)) {
+ log("expected: ", expect_rr_assignment);
+ log("got: ", l3);
+ setverdict(fail, "RR assignmentCommand message is not as expected");
+ mtc.stop;
+ }
+
+ var PDU_ML3_MS_NW l3_tx := valueof(ts_RRM_AssignmentComplete('00'O));
+ RSL.send(ts_RSL_EST_IND(new_chan_nr, valueof(ts_RslLinkID_DCCH(0)),
+ enc_PDU_ML3_MS_NW(l3_tx)));
+
+ }
+ [] RSL.receive(tr_RSL_IPA_CRCX(new_chan_nr)) -> value rsl {
+ var uint7_t rtp_pt := 0;
+ if (f_rsl_find_ie(rsl, RSL_IE_IPAC_RTP_PAYLOAD, ie)) {
+ rtp_pt := ie.ipa_rtp_pt;
+ }
+ RSL.send(ts_RSL_IPA_CRCX_ACK(new_chan_nr, 123,
+ oct2int(f_inet_addr("1.2.3.4")),
+ 4321,
+ rtp_pt));
+ }
+ [] RSL.receive(tr_RSL_IPA_MDCX(new_chan_nr, ?)) -> value rsl{
+ /* Extract conn_id, ip, port, rtp_pt2 from request + use in response */
+ b_unused := f_rsl_find_ie(rsl, RSL_IE_IPAC_CONN_ID, ie);
+ var uint16_t conn_id := ie.ipa_conn_id;
+ /* mandatory */
+ b_unused := f_rsl_find_ie(rsl, RSL_IE_IPAC_REMOTE_IP, ie);
+ var HostPort peer;
+ peer.host := f_inet_ntoa(int2oct(ie.ipa_remote_ip, 4));
+ b_unused := f_rsl_find_ie(rsl, RSL_IE_IPAC_REMOTE_PORT, ie);
+ peer.port_nr := ie.ipa_remote_port;
+ var uint7_t rtp_pt := 0;
+ /* optional */
+ if (f_rsl_find_ie(rsl, RSL_IE_IPAC_RTP_PAYLOAD, ie)) {
+ rtp_pt := ie.ipa_rtp_pt;
+ }
+ RSL.send(ts_RSL_IPA_MDCX_ACK(new_chan_nr, conn_id,
+ oct2int(f_inet_addr(peer.host)),
+ peer.port_nr,
+ rtp_pt));
+ }
+ [] RSL.receive(tr_RSL_DEACT_SACCH(g_chan_nr)) {}
+ [] RSL.receive(tr_RSL_RF_CHAN_REL(g_chan_nr)) {
+ /*
+ RSL.send(ts_ASP_RSL_UD(ts_RSL_RF_CHAN_REL_ACK(g_chan_nr),
+ IPAC_PROTO_RSL_TRX0));
+ */
+ f_rslem_unregister(0, g_chan_nr, RSL_PROC);
+ g_chan_nr := new_chan_nr;
+ }
+ /* (There must be no RSL_MT_REL_REQ on the old lchan.) */
+ }
+
+ setverdict(pass);
+
+ f_sleep(1.0);
+ f_vty_transceive(BSCVTY, "show lchan summary");
+
+ f_verify_dtap();
+}
+
+private function f_est_and_reassign_to_secondary_lchan(RslChannelNr new_chan_nr) runs on MSC_ConnHdlr
+{
+ var integer new_subslot := f_rsl_chan_nr_to_subslot(new_chan_nr);
+ var BIT5 new_rr_cbits := f_rsl_chan_nr_to_rr_cbits(new_chan_nr);
+
+ var PDU_BSSAP ass_cmd := f_gen_ass_req();
+ var template PDU_BSSAP exp_compl := f_gen_exp_compl();
+
+ /* puzzle together the ASSIGNMENT REQ for given codec[s] */
+ if (mp_bssap_cfg[0].transport == BSSAP_TRANSPORT_AoIP) {
+ ass_cmd.pdu.bssmap.assignmentRequest.codecList := g_pars.ass_codec_list;
+ exp_compl.pdu.bssmap.assignmentComplete.speechCodec.codecElements[0] :=
+ g_pars.ass_codec_list.codecElements[0];
+ if (isvalue(g_pars.expect_mr_s0_s7)) {
+ exp_compl.pdu.bssmap.assignmentComplete.speechCodec.codecElements[0].s0_7 :=
+ g_pars.expect_mr_s0_s7;
+ }
+ }
+ ass_cmd.pdu.bssmap.assignmentRequest.channelType :=
+ f_BSSMAP_chtype_from_codec(g_pars.ass_codec_list.codecElements[0]);
+ log("expecting ASS COMPL like this: ", exp_compl);
+
+ f_establish_fully(ass_cmd, exp_compl);
+
+ var integer current_subslot := f_rsl_chan_nr_to_subslot(g_chan_nr);
+
+ f_sleep(1.0);
+
+ activate(as_Media_mgw());
+
+ f_rslem_register(0, new_chan_nr, RSL_PROC);
+ log("f_rslem_register(0, new_chan_nr = ", new_chan_nr, ")");
+
+ f_vty_transceive(BSCVTY, "bts 0 trx 0 timeslot " & int2str(g_chan_nr.tn) & " sub-slot " & int2str(current_subslot)
+ & " reassign-to trx 0 timeslot " & int2str(new_chan_nr.tn) & " vamos-sub-slot " & int2str(new_subslot) & " tsc 4 2");
+ /* RSL CHAN ACT is ACKed by RSL emulation */
+
+ var RSL_Message rsl;
+ var RSL_IE_Body ie;
+ var boolean b_unused;
+ interleave {
+ [] RSL.receive(tr_RSL_DATA_REQ(g_chan_nr)) -> value rsl {
+ var PDU_ML3_NW_MS l3 := dec_PDU_ML3_NW_MS(rsl.ies[2].body.l3_info.payload);
+ var template PDU_ML3_NW_MS expect_rr_assignment := tr_RR_AssignmentCommand(
+ desc := tr_ChannelDescription2_V(timeslotNumber := int2bit(new_chan_nr.tn, 3),
+ channelTypeandTDMAOffset := new_rr_cbits),
+ mode := tr_ChannelMode_TV(mode := 'C1'O
+ /* 1 1 0 0 0 0 0 1 speech full rate or half rate version 1 in VAMOS mode (3GPP TS 44.018) */),
+ extendedTSCSet := tr_ExtendedTSCSet_TV(cSDomainTSCSet := '11'B
+ /* 3 means TSC Set 4 (range 1-4 in spec tables and naming, 0-3 on the wire) */));
+ if (not match(l3, expect_rr_assignment)) {
+ log("expected: ", expect_rr_assignment);
+ log("got: ", l3);
+ setverdict(fail, "RR assignmentCommand message is not as expected");
+ mtc.stop;
+ }
+
+ var PDU_ML3_MS_NW l3_tx := valueof(ts_RRM_AssignmentComplete('00'O));
+ RSL.send(ts_RSL_EST_IND(new_chan_nr, valueof(ts_RslLinkID_DCCH(0)),
+ enc_PDU_ML3_MS_NW(l3_tx)));
+
+ }
+ [] RSL.receive(tr_RSL_IPA_CRCX(new_chan_nr)) -> value rsl {
+ var uint7_t rtp_pt := 0;
+ if (f_rsl_find_ie(rsl, RSL_IE_IPAC_RTP_PAYLOAD, ie)) {
+ rtp_pt := ie.ipa_rtp_pt;
+ }
+ RSL.send(ts_RSL_IPA_CRCX_ACK(new_chan_nr, 123,
+ oct2int(f_inet_addr("1.2.3.4")),
+ 4321,
+ rtp_pt));
+ }
+ [] RSL.receive(tr_RSL_IPA_MDCX(new_chan_nr, ?)) -> value rsl{
+ /* Extract conn_id, ip, port, rtp_pt2 from request + use in response */
+ b_unused := f_rsl_find_ie(rsl, RSL_IE_IPAC_CONN_ID, ie);
+ var uint16_t conn_id := ie.ipa_conn_id;
+ /* mandatory */
+ b_unused := f_rsl_find_ie(rsl, RSL_IE_IPAC_REMOTE_IP, ie);
+ var HostPort peer;
+ peer.host := f_inet_ntoa(int2oct(ie.ipa_remote_ip, 4));
+ b_unused := f_rsl_find_ie(rsl, RSL_IE_IPAC_REMOTE_PORT, ie);
+ peer.port_nr := ie.ipa_remote_port;
+ var uint7_t rtp_pt := 0;
+ /* optional */
+ if (f_rsl_find_ie(rsl, RSL_IE_IPAC_RTP_PAYLOAD, ie)) {
+ rtp_pt := ie.ipa_rtp_pt;
+ }
+ RSL.send(ts_RSL_IPA_MDCX_ACK(new_chan_nr, conn_id,
+ oct2int(f_inet_addr(peer.host)),
+ peer.port_nr,
+ rtp_pt));
+ }
+ [] RSL.receive(tr_RSL_DEACT_SACCH(g_chan_nr)) {}
+ [] RSL.receive(tr_RSL_RF_CHAN_REL(g_chan_nr)) {
+ /*
+ RSL.send(ts_ASP_RSL_UD(ts_RSL_RF_CHAN_REL_ACK(g_chan_nr),
+ IPAC_PROTO_RSL_TRX0));
+ */
+ f_rslem_unregister(0, g_chan_nr, RSL_PROC);
+ g_chan_nr := new_chan_nr;
+ }
+ /* (There must be no RSL_MT_REL_REQ on the old lchan.) */
+ }
+
+ setverdict(pass);
+
+ f_sleep(1.0);
+ f_vty_transceive(BSCVTY, "show lchan summary");
+
+ f_verify_dtap();
+}
+
+/* Establish a primary lchan, and then do a re-assignment to a VAMOS shadow lchan.
+ * Also re-assign back to a primary lchan. */
+private function f_TC_assign_to_secondary_lchan_fr(charstring id) runs on MSC_ConnHdlr {
+ f_est_and_reassign_to_secondary_lchan(valueof(t_RslChanNr_Osmo_VAMOS_Bm(2)));
+ f_reassign_secondary_to_primary_lchan(valueof(t_RslChanNr_Bm(3)));
+ f_perform_clear(RSL);
+ f_sleep(1.0);
+}
+
+/* Establish a primary lchan, and then do a re-assignment to a VAMOS shadow lchan. */
+testcase TC_assign_to_secondary_lchan_fr() runs on test_CT {
+ var TestHdlrParams pars := f_gen_test_hdlr_pars();
+ var MSC_ConnHdlr vc_conn;
+
+ f_init(1, true);
+ f_sleep(1.0);
+
+ pars.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
+ vc_conn := f_start_handler(refers(f_TC_assign_to_secondary_lchan_fr), pars);
+ vc_conn.done;
+ f_shutdown_helper();
+}
+
+/* Establish a primary lchan, and then do a re-assignment to a VAMOS shadow lchan.
+ * Also re-assign back to a primary lchan. */
+private function f_TC_assign_to_secondary_lchan_hr(charstring id) runs on MSC_ConnHdlr {
+ f_est_and_reassign_to_secondary_lchan(valueof(t_RslChanNr_Osmo_VAMOS_Lm(6, 0)));
+ f_reassign_secondary_to_primary_lchan(valueof(t_RslChanNr_Lm(6, 1)));
+ f_perform_clear(RSL);
+ f_sleep(1.0);
+}
+
+/* Establish a primary lchan, and then do a re-assignment to a VAMOS shadow lchan. */
+testcase TC_assign_to_secondary_lchan_hr() runs on test_CT {
+ var TestHdlrParams pars := f_gen_test_hdlr_pars();
+ var MSC_ConnHdlr vc_conn;
+
+ f_init(1, true);
+ f_sleep(1.0);
+
+ pars.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecHR}));
+ vc_conn := f_start_handler(refers(f_TC_assign_to_secondary_lchan_hr), pars);
+ vc_conn.done;
+ f_shutdown_helper();
+}
+
+/* First, primary lchan of TC_vamos_multiplex_tch_f_tch_f() */
+private function f_TC_vamos_multiplex_tch_f_tch_f1(charstring id) runs on MSC_ConnHdlr {
+ f_est_lchan_and_mode_modify_to_vamos();
+ f_logp(BSCVTY, "f_est_lchan_and_mode_modify_to_vamos done");
+}
+
+/* Second, VAMOS shadow lchan of TC_vamos_multiplex_tch_f_tch_f() */
+private function f_TC_vamos_multiplex_tch_f_tch_f2(charstring id) runs on MSC_ConnHdlr {
+ f_est_and_reassign_to_secondary_lchan(valueof(t_RslChanNr_Osmo_VAMOS_Bm(1)));
+}
+
+/* Establish a primary lchan and modify it to VAMOS speech mode. Then establish
+ * another primary lchan, and re-assign it to the VAMOS secondary lchan of the
+ * first primary lchan. */
+testcase TC_vamos_multiplex_tch_f_tch_f() runs on test_CT {
+ var TestHdlrParams pars1 := f_gen_test_hdlr_pars();
+ var MSC_ConnHdlr vc_conn1;
+
+ var TestHdlrParams pars2 := f_gen_test_hdlr_pars();
+ var MSC_ConnHdlr vc_conn2;
+ pars2.imsi := '001014234234234'H;
+ pars2.media_nr := 2;
+
+ f_init(1, true);
+ f_sleep(1.0);
+
+ pars1.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
+ pars2.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
+ vc_conn1 := f_start_handler(refers(f_TC_vamos_multiplex_tch_f_tch_f1), pars1);
+ vc_conn1.done;
+
+ vc_conn2 := f_start_handler(refers(f_TC_vamos_multiplex_tch_f_tch_f2), pars2);
+ vc_conn2.done;
+ f_shutdown_helper();
+}
+
+/* First, primary lchan of TC_vamos_multiplex_tch_h_tch_h_tch_h_tch_h() */
+private function f_TC_vamos_multiplex_tch_h_tch_h1(charstring id) runs on MSC_ConnHdlr {
+ f_est_lchan_and_mode_modify_to_vamos();
+ f_logp(BSCVTY, "f_est_lchan_and_mode_modify_to_vamos done");
+}
+
+/* Second, VAMOS shadow lchan of TC_vamos_multiplex_tch_h_tch_h_tch_h_tch_h() */
+private function f_TC_vamos_multiplex_tch_h_tch_h2(charstring id) runs on MSC_ConnHdlr {
+ f_est_and_reassign_to_secondary_lchan(valueof(t_RslChanNr_Osmo_VAMOS_Lm(5, 0)));
+}
+
+private function f_TC_vamos_multiplex_tch_h_tch_h4(charstring id) runs on MSC_ConnHdlr {
+ f_est_and_reassign_to_secondary_lchan(valueof(t_RslChanNr_Osmo_VAMOS_Lm(5, 1)));
+}
+
+/* Establish a primary lchan and modify it to VAMOS speech mode. Then establish
+ * another primary lchan, and re-assign it to the VAMOS secondary lchan of the
+ * first primary lchan. */
+testcase TC_vamos_multiplex_tch_h_tch_h_tch_h_tch_h() runs on test_CT {
+ var TestHdlrParams pars1 := f_gen_test_hdlr_pars();
+ var MSC_ConnHdlr vc_conn1;
+ pars1.imsi := '001011111111111'H;
+ pars1.media_nr := 1;
+
+ var TestHdlrParams pars2 := f_gen_test_hdlr_pars();
+ var MSC_ConnHdlr vc_conn2;
+ pars2.imsi := '001012222222222'H;
+ pars2.media_nr := 2;
+
+ var TestHdlrParams pars3 := f_gen_test_hdlr_pars();
+ var MSC_ConnHdlr vc_conn3;
+ pars3.imsi := '001013333333333'H;
+ pars3.media_nr := 3;
+
+ var TestHdlrParams pars4 := f_gen_test_hdlr_pars();
+ var MSC_ConnHdlr vc_conn4;
+ pars4.imsi := '001014444444444'H;
+ pars4.media_nr := 4;
+
+ f_init(1, true);
+ f_sleep(1.0);
+
+ pars1.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecHR}));
+ pars2.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecHR}));
+ pars3.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecHR}));
+ pars4.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecHR}));
+
+ vc_conn1 := f_start_handler(refers(f_TC_vamos_multiplex_tch_h_tch_h1), pars1);
+ vc_conn1.done;
+
+ vc_conn2 := f_start_handler(refers(f_TC_vamos_multiplex_tch_h_tch_h2), pars2);
+ vc_conn2.done;
+
+ /* Also fill up the second subslot of the TCH/H timeslot */
+ vc_conn3 := f_start_handler(refers(f_TC_vamos_multiplex_tch_h_tch_h1), pars3);
+ vc_conn3.done;
+
+ vc_conn4 := f_start_handler(refers(f_TC_vamos_multiplex_tch_h_tch_h4), pars4);
+ vc_conn4.done;
+ f_shutdown_helper();
+}
+
+control {
+ execute( TC_chan_act_to_vamos() );
+ execute( TC_mode_modify_to_vamos_fr() );
+ execute( TC_mode_modify_to_vamos_hr() );
+ execute( TC_assign_to_secondary_lchan_fr() );
+ execute( TC_assign_to_secondary_lchan_hr() );
+ execute( TC_vamos_multiplex_tch_f_tch_f() );
+ execute( TC_vamos_multiplex_tch_h_tch_h_tch_h_tch_h() );
+}
+
+}