Harald Welte has submitted this change and it was merged.
Change subject: Add Message Sequence Chart for MO call with ext. MNCC in OsmoMSC
......................................................................
Add Message Sequence Chart for MO call with ext. MNCC in OsmoMSC
We simply talk to the MGW instead of the BTS, everything else should
remain identical.
Change-Id: I5c249cc2144276a25dba4d7bcb086a34b52d6334
---
A common/chapters/msc_mncc_mo_rtp.msc
1 file changed, 90 insertions(+), 0 deletions(-)
Approvals:
Harald Welte: Looks good to me, approved
Jenkins Builder: Verified
diff --git a/common/chapters/msc_mncc_mo_rtp.msc
b/common/chapters/msc_mncc_mo_rtp.msc
new file mode 100644
index 0000000..70197bc
--- /dev/null
+++ b/common/chapters/msc_mncc_mo_rtp.msc
@@ -0,0 +1,90 @@
+msc {
+ hscale="4";
+ ms [label="MS"], mgw [label="MGW"], nitb [label="MSC"], emh
[label="External MNCC Hdlr"];
+
+ |||;
+ ... [label="Mobile Originated call handled via OsmoMSC, no
RTP proxy, IPBTS and external MNCC Handler"];
+ |||;
+ --- [label="User on A-side dials a MO call from his phone"];
+ ms <=> nitb [label="RF Channel Establishment"];
+ ...;
+
+ # MS sends CC SETUP, deliver it to MNCC
+ ms -> nitb [label="CC SETUP [MSISDN]"];
+ nitb rbox nitb [label="CSTATE_INITIATED"];
+ nitb -> emh [label="MNCC-SETUP.ind [CALLING, BEARER_CAP,
+FACILITY, CALLED, USERUSER, SSVERSION, CCCAP"];
+ emh rbox emh [label="1 CALL_INIT"];
+ ...;
+
+ --- [label="Exact time of RTP-CREATE up to Ext MNCC Hdlr"];
+ nitb <- emh [label="MNCC_RTP_CREATE[.req]"];
+ mgw <- nitb [label="MGCP CRCX"];
+ mgw -> nitb [label="MGCP CRCX ACK (MGW-IP, MGW-PORT)"];
+ nitb -> emh [label="MNCC_RTP_CREATE[.cnf] (MGW-IP, MGW-PORT)"];
+ ...;
+
+ nitb <- emh [label="MNCC-CALL-PROC.req [BEARER_CAP, FACILITY,
PROGRESS]"];
+ emh rbox emh [label="3 MO_CALL_PROC"];
+ nitb rbox nitb [label="CSTATE_MO_CALL_PROC"];
+ ms <- nitb [label="CC CALL PROCEDING"];
+ ...;
+
+ # optional
+ --- [label="Optional PROGRESS, can happen 0-N times"];
+ nitb <- emh [label="MNCC-PROGRESS.req [USERUSER]"];
+ emh rbox emh [label="3 MO_CALL_PROC"];
+ ms <- nitb [label="CC PROCEDING"];
+ ...;
+
+ # optional
+ --- [label="Optional; Indicates when B-side is ringing"];
+ nitb <- emh [label="MNCC-ALERT.req [FACILITY, PROGRESS, USERUSER]"];
+ emh rbox emh [label="4 CALL_DELIVERED"];
+ nitb rbox nitb [label="CSTATE_CALL_DELIVERED"];
+ ms <- nitb [label="CC ALERTING"];
+ ...;
+
+ # ask the MGW to connect its RTP stream to the given IP+PORT
+ --- [label="Exact time of RTP-CONNECT up to Ext MNCC Hdlr"];
+ nitb <- emh [label="MNCC_RTP_CONNECT[.req] (EMH-IP, EMH-PORT)"];
+ mgw <- nitb [label="MGCP MDCX (EMH-IP, EMH-PORT)"];
+ mgw -> nitb [label="MGCP MDCX ACK"];
+ nitb -> emh [label="MNCC_RTP_CONNECT[.cnf] (MGW-IP, MGW-PORT)"];
+ ...;
+
+ --- [label="User on B-side answers the call"];
+ nitb <- emh [label="MNCC-SETUP.rsp [FACILITY, PROGRERSS, CONNETED,
USERUSER]"];
+ emh rbox emh [label="? CONNECT_INDICATION"];
+ nitb rbox nitb [label="CSTATE_CONNECT_IND"];
+ ms <- nitb [label="CC CONNECT"];
+ ...;
+
+ ms -> nitb [label="CC CONNECT ACK"];
+ nitb rbox nitb [label="CSTATE_ACTIVE"];
+ nitb -> emh [label="MNCC-SETUP-COMPL.ind"];
+ emh rbox emh [label="10 ACTIVE"];
+ ...;
+ ...;
+ ...;
+
+ --- [label="User on A-side hangs up the call"];
+ ms -> nitb [label="CC DISCONNECT"];
+ nitb rbox nitb [label="CSTATE_DISCONNET_REQ"];
+ nitb -> emh [label="MNCC-DISC.ind [CAUSE, FACILITY, USERUSER,
SSVERSION]"];
+ emh rbox emh [label="12 DISCONNET_IND"];
+ ...;
+
+ nitb <- emh [label="MNCC-RELEASE.req [CAUSE, FACILITY, USERUSER]"];
+ emh rbox emh [label="19 RELEASE_REQ"];
+ nitb rbox nitb [label="CSTATE_RELEASE_REQ"];
+ ms <- nitb [label="CC RELEASE"];
+ ...;
+
+ ms -> nitb [label="CC RELEASE COMPLETE"];
+ nitb -> emh [label="MNCC-RELEASE.cnf [CAUSE, FACILITY, USERUSER,
SSVERSION]"];
+ ...;
+
+ ms <=> nitb [label="RF Channel Release"];
+ ...;
+}
--
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Gerrit-MessageType: merged
Gerrit-Change-Id: I5c249cc2144276a25dba4d7bcb086a34b52d6334
Gerrit-PatchSet: 1
Gerrit-Project: osmo-gsm-manuals
Gerrit-Branch: master
Gerrit-Owner: Harald Welte <lafo...@gnumonks.org>
Gerrit-Reviewer: Harald Welte <lafo...@gnumonks.org>
Gerrit-Reviewer: Jenkins Builder
