ttcn3
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osmo-ttcn3-hacks
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msc: Mobile Terminated Voice Call test 

Change-Id: I4fa353623991ac98726217559fea9f83f64715ea
This commit is contained in:
Harald Welte 2018-02-10 15:34:46 +01:00
parent 49518bf842
commit 33ec09bf34
4 changed files with 301 additions and 1 deletions
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134
library/L3_Templates.ttcn
View File

@ -29,6 +29,24 @@ type enumerated CmServiceType {
CM_TYPE_LCS ('1011'B)
}
template ML3_Cause_TLV ts_ML3_Cause(BIT7 cause, BIT4 loc := '0001'B, BIT2 std := '11'B) := {
elementIdentifier := '08'O,
lengthIndicator := 0, /* overwritten */
oct3 := {
location := loc,
spare1_1 := '0'B,
codingStandard := std,
ext1 := '0'B,
recommendation := omit,
ext2 := omit
},
oct4 := {
causeValue := cause,
ext3 := '1'B
},
diagnostics := omit
}
/* send template fro Mobile Identity (TMSI) */
template MobileIdentityLV ts_MI_TMSI_LV(OCT4 tmsi) := {
@ -734,6 +752,74 @@ template PDU_ML3_NW_MS tr_ML3_MT_CC_ALERTING(integer tid) := {
}
}
template PDU_ML3_MS_NW ts_ML3_MO_CC_ALERTING(integer tid) := {
discriminator := '0011'B,
tiOrSkip := {
transactionId := {
tio := int2bit(tid, 3),
tiFlag := '1'B,
tIExtension := omit
}
},
msgs := {
cc := {
alerting_MS_NW := {
messageType := '000001'B,
nsd := '00'B,
facility := omit,
user_user := omit,
ss_VersionIndicator := omit
}
}
}
}
template PDU_ML3_MS_NW ts_ML3_MT_CC_ALERTING(integer tid) := {
discriminator := '0011'B,
tiOrSkip := {
transactionId := {
tio := int2bit(tid, 3),
tiFlag := '1'B,
tIExtension := omit
}
},
msgs := {
cc := {
alerting_MS_NW := {
messageType := '000001'B,
nsd := '00'B,
facility := omit,
user_user := omit,
ss_VersionIndicator := omit
}
}
}
}
template PDU_ML3_MS_NW ts_ML3_MO_CC_CONNECT(integer tid) := {
discriminator := '0011'B,
tiOrSkip := {
transactionId := {
tio := int2bit(tid, 3),
tiFlag := '1'B,
tIExtension := omit
}
},
msgs := {
cc := {
connect_MS_NW := {
messageType := '000111'B,
nsd := '00'B,
facility := omit,
connectedSubAddress := omit,
user_user := omit,
ss_VersionIndicator := omit,
streamIdentifier := omit
}
}
}
}
template PDU_ML3_NW_MS tr_ML3_MT_CC_CONNECT(integer tid) := {
discriminator := '0011'B,
tiOrSkip := {
@ -824,6 +910,31 @@ template PDU_ML3_NW_MS tr_ML3_MT_CC_RELEASE(integer tid) := {
}
}
template PDU_ML3_MS_NW ts_ML3_MO_CC_RELEASE(integer tid, BIT1 tid_remote, BIT7 cause) := {
discriminator := '0011'B,
tiOrSkip := {
transactionId := {
tio := int2bit(tid, 3),
tiFlag := tid_remote,
tIExtension := omit
}
},
msgs := {
cc := {
release_MS_NW := {
messageType := '101101'B,
nsd := '00'B,
cause := ts_ML3_Cause(cause),
secondCause := omit,
facility := omit,
user_user := omit,
ss_VersionIndicator := omit
}
}
}
}
template (value) PDU_ML3_MS_NW ts_ML3_MO_CC_REL_COMPL(integer tid) := {
discriminator := '0011'B,
tiOrSkip := {
@ -847,6 +958,29 @@ template (value) PDU_ML3_MS_NW ts_ML3_MO_CC_REL_COMPL(integer tid) := {
}
}
template PDU_ML3_NW_MS tr_ML3_MT_CC_REL_COMPL(integer tid) := {
discriminator := '0011'B,
tiOrSkip := {
transactionId := {
tio := int2bit(tid, 3),
tiFlag := ?,
tIExtension := omit
}
},
msgs := {
cc := {
releaseComplete_NW_MS := {
messageType := '101010'B,
nsd := '00'B,
cause := *,
facility := *,
user_user := *
}
}
}
}
template PDU_ML3_NW_MS tr_ML3_MT_MM_AUTH_REQ(template OCT16 rand := ?) := {
discriminator := '0101'B,

33
library/MNCC_Types.ttcn
View File

@ -595,6 +595,37 @@ template MNCC_PDU ts_MNCC_SETUP_CNF(uint32_t call_id, template MNCC_number conne
}
}
/* MT: MSC -> MNCC: SETUP.cnf; Response to SETUP.req */
template MNCC_PDU tr_MNCC_SETUP_cnf(uint32_t call_id, template MNCC_number connected := *) := {
msg_type := MNCC_SETUP_CNF,
u := {
signal := { /* See 24.008 9.3.5 */
callref := call_id,
bearer_cap := omit,
called := omit,
calling := omit,
redirecting := omit,
connected := connected,
cause := omit,
progress := *,
useruser := *,
facility := *,
cccap := omit,
ssversion := omit,
clir_sup := 0,
clir_inv := 0,
signal := omit,
keypad := omit,
more := 0,
notify := 0,
emergency := *,
imsi := ?,
lchan_type := ?,
lchan_mode := ?
}
}
}
/* MT: MSC -> MNCC: SETUP_COMPL.req; request to send CONNECT ACK */
template MNCC_PDU tr_MNCC_SETUP_COMPL_req(template uint32_t call_id) :=
tr_MNCC_SIMPLE(MNCC_SETUP_COMPL_REQ, call_id); /* See 24.008 9.3.6 */
@ -802,7 +833,7 @@ template MNCC_PDU ts_MNCC_ALERT_req(uint32_t call_id, template MNCC_progress pro
template MNCC_PDU tr_MNCC_ALERT_ind(template uint32_t call_id, template MNCC_progress prog := omit,
template charstring fac := omit,
template MNCC_useruser uu := omit) := {
msg_type := MNCC_ALERT_REQ,
msg_type := MNCC_ALERT_IND,
u := {
signal := { /* See 24.008 9.3.1 */
callref := call_id,

112
msc/BSC_ConnectionHandler.ttcn
View File

@ -425,6 +425,118 @@ template (value) CallParameters t_CallParams(hexstring called, integer tid) := {
};
function f_mt_call(inout CallParameters cpars)
runs on BSC_ConnHdlr {
var MobileIdentityLV mi;
var MNCC_PDU mncc;
var MgcpCommand mgcp_cmd;
f_bssmap_register_imsi(g_pars.imsi, g_pars.tmsi);
/* Allocate a call reference and send SETUP via MNCC to MSC */
cpars.mncc_callref := f_rnd_int(2147483648);
MNCC.send(ts_MNCC_SETUP_req(cpars.mncc_callref, hex2str(g_pars.msisdn),
hex2str(cpars.called_party), hex2str(g_pars.imsi)));
/* BSC <- MSC: Expect paging. FIXME: By TMSI or not? */
BSSAP.receive(tr_BSSMAP_Paging(g_pars.imsi));
/* If we have a TMSI, use TMSI instead of IMSI */
if (ispresent(g_pars.tmsi)) {
mi := valueof(ts_MI_TMSI_LV(g_pars.tmsi));
} else {
mi := valueof(ts_MI_IMSI_LV(g_pars.imsi));
}
f_establish_fully(mi, EST_TYPE_PAG_RESP);
/* MS <- MSC: Expect CC SETUP */
BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_CC_SETUP(cpars.transaction_id, *, cpars.called_party)));
/* MS -> MSC: ALERTING */
BSSAP.send(ts_PDU_DTAP_MO(ts_ML3_MO_CC_ALERTING(cpars.transaction_id)));
MNCC.receive(tr_MNCC_ALERT_ind(cpars.mncc_callref));
/* Create MGCP expect */
f_create_mgcp_expect(ExpectCriteria:{omit,omit,omit});
/* Ask MSC via MNCC to create the RTP socket on the MSC/MGW side */
MNCC.send(ts_MNCC_RTP_CREATE(cpars.mncc_callref));
/* First MGCP CRCX (for BSS/RAN side) */
MGCP.receive(tr_CRCX) -> value mgcp_cmd {
cpars.mgcp_call_id := f_MgcpCmd_extract_call_id(mgcp_cmd);
/* TODO: dynamic EP allocation case */
cpars.mgcp_ep := mgcp_cmd.line.ep;
var SDP_Message sdp := valueof(ts_SDP(cpars.mgw_rtp_ip_bss, cpars.mgw_rtp_ip_bss,
hex2str(cpars.mgcp_call_id), "42",
cpars.mgw_rtp_port_bss,
{ int2str(cpars.rtp_payload_type) },
{ valueof(ts_SDP_rtpmap(cpars.rtp_payload_type,
cpars.rtp_sdp_format)),
valueof(ts_SDP_ptime(20)) }));
MGCP.send(ts_CRCX_ACK(mgcp_cmd.line.trans_id, cpars.mgcp_connection_id_bss, sdp));
}
/* Second MGCP CRCX (this time for MSS/CN side) */
MGCP.receive(tr_CRCX(cpars.mgcp_ep)) -> value mgcp_cmd {
var SDP_Message sdp := valueof(ts_SDP(cpars.mgw_rtp_ip_mss, cpars.mgw_rtp_ip_mss,
hex2str(cpars.mgcp_call_id), "42",
cpars.mgw_rtp_port_mss,
{ int2str(cpars.rtp_payload_type) },
{ valueof(ts_SDP_rtpmap(cpars.rtp_payload_type,
cpars.rtp_sdp_format)),
valueof(ts_SDP_ptime(20)) }));
MGCP.send(ts_CRCX_ACK(mgcp_cmd.line.trans_id, cpars.mgcp_connection_id_mss, sdp));
/* MSC acknowledges the MNCC_CREATE to the MNCC handler */
MNCC.receive(tr_MNCC_RTP_CREATE(cpars.mncc_callref));
}
/* expect the MSC to trigger a BSSMAP ASSIGNMENT */
var BSSMAP_IE_AoIP_TransportLayerAddress tla_ass :=
valueof(ts_BSSMAP_IE_AoIP_TLA4(f_inet_addr(cpars.mgw_rtp_ip_bss),cpars.mgw_rtp_port_bss));
BSSAP.receive(tr_BSSMAP_AssignmentReq(omit, tla_ass)) {
var BSSMAP_IE_AoIP_TransportLayerAddress tla;
tla := valueof(ts_BSSMAP_IE_AoIP_TLA4(f_inet_addr(cpars.bss_rtp_ip), cpars.bss_rtp_port));
BSSAP.send(ts_BSSMAP_AssignmentComplete(omit, tla));
}
/* MS -> MSC: ALERTING */
BSSAP.send(ts_PDU_DTAP_MO(ts_ML3_MO_CC_CONNECT(cpars.transaction_id)));
MNCC.receive(tr_MNCC_SETUP_cnf(cpars.mncc_callref));
/* FIXME */
f_sleep(3.0);
/* Hangup by "A" side */
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)));
if (false) {
/* A-side (PLMN) Release of call */
MNCC.send(ts_MNCC_REL_req(cpars.mncc_callref, valueof(ts_MNCC_cause(42))));
BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_CC_RELEASE(cpars.transaction_id)));
BSSAP.send(ts_PDU_DTAP_MO(ts_ML3_MO_CC_REL_COMPL(cpars.transaction_id)));
} else {
/* B-side (MS) Release of call */
BSSAP.send(ts_PDU_DTAP_MO(ts_ML3_MO_CC_RELEASE(cpars.transaction_id, '1'B, '0000000'B)));
MNCC.receive(tr_MNCC_REL_ind(cpars.mncc_callref));
BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_CC_REL_COMPL(cpars.transaction_id)));
}
/* clearing of radio channel */
interleave {
[] BSSAP.receive(tr_BSSMAP_ClearCommand) {
BSSAP.send(ts_BSSMAP_ClearComplete);
BSSAP.receive(BSSAP_Conn_Prim:MSC_CONN_PRIM_DISC_IND);
}
[] MGCP.receive(tr_DLCX(?)) -> value mgcp_cmd {
/* TODO: For one or all connections on EP? */
MGCP.send(ts_DLCX_ACK2(mgcp_cmd.line.trans_id));
f_create_mgcp_delete_ep(cpars.mgcp_ep);
}
}
setverdict(pass);
}
function f_mo_call(inout CallParameters cpars)
runs on BSC_ConnHdlr {

23
msc/MSC_Tests.ttcn
View File

@ -1540,6 +1540,26 @@ testcase TC_lu_imsi_auth_tmsi_encr_013_2() runs on MTC_CT {
vc_conn.done;
}
/* LU followed by MT call (including paging) */
private function f_tc_lu_and_mt_call(charstring id, BSC_ConnHdlrPars pars) runs on BSC_ConnHdlr {
f_init_handler(pars);
//FIXME: odd digits var CallParameters cpars := valueof(t_CallParams('12345'H, 0));
var CallParameters cpars := valueof(t_CallParams('123456'H, 0));
cpars.bss_rtp_port := 1110;
cpars.mgcp_connection_id_bss := '10004'H;
cpars.mgcp_connection_id_mss := '10005'H;
f_perform_lu(true);
f_mt_call(cpars);
}
testcase TC_lu_and_mt_call() runs on MTC_CT {
var BSC_ConnHdlr vc_conn;
f_init();
vc_conn := f_start_handler(refers(f_tc_lu_and_mt_call), testcasename(), 39);
vc_conn.done;
}
@ -1596,6 +1616,9 @@ control {
execute( TC_lu_imsi_auth_tmsi_encr_3_1() );
execute( TC_lu_imsi_auth_tmsi_encr_13_2() );
execute( TC_lu_imsi_auth_tmsi_encr_013_2() );
execute( TC_lu_and_mt_call() );
}