Review at https://gerrit.osmocom.org/3178
Add Message Sequence Chart for a MO calls with ext. MNCC handler
Change-Id: Ida10fc7ccb345b8cd084c4ecc5f4f7d4ce6c98a0
---
A common/chapters/nitb_mncc_mo_rtp.msc
A common/chapters/nitb_mncc_mo_tch.msc
2 files changed, 196 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-gsm-manuals
refs/changes/78/3178/1
diff --git a/common/chapters/nitb_mncc_mo_rtp.msc
b/common/chapters/nitb_mncc_mo_rtp.msc
new file mode 100644
index 0000000..768827a
--- /dev/null
+++ b/common/chapters/nitb_mncc_mo_rtp.msc
@@ -0,0 +1,104 @@
+msc {
+ hscale="4";
+ ms [label="MS"], bts [label="BTS"], nitb [label="NITB"], emh
[label="External MNCC Hdlr"];
+
+ |||;
+ ... [label="Mobile Originated call handled via OsmoNITB, 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]"];
+ bts <- nitb [label="RSL IPA CRCX"];
+ bts -> nitb [label="RSL IPA CRCX ACK (BTS-IP, BTS-PORT)"];
+ nitb -> emh [label="MNCC_RTP_CREATE[.cnf] (BTS-IP, BTS-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 BTS 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)"];
+ bts <- nitb [label="RSL IPA MDCX (EMH-IP, EMH-PORT)"];
+ bts -> nitb [label="RSL IPA MDCX ACK"];
+ nitb -> emh [label="MNCC_RTP_CONNECT[.cnf] (BTS-IP, BTS-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"];
+ ...;
+
+
+
+ # bridge two voice calls (by call reference) inside NITB
+# nitb <- emh [label="MNCC_BRIDGE"];
+
+# nitb <- emh [label="MNCC_FRAME_DROP"];
+# nitb <- emh [label="MNCC_FRAME_RECV"];
+
+ # not implemented so far
+# nitb <- emh [label="MNCC_RTP_FREE"];
+
+ # direct input/output of voice frames via MNCC socket
+# nitb <- emh [label="MNCC_TCHF_FRAME, GSM_TCHF_FRAME_EFR,
GSM_TCHH_FRAME, GSM_TCH_FRAME_AMR"];
+}
diff --git a/common/chapters/nitb_mncc_mo_tch.msc
b/common/chapters/nitb_mncc_mo_tch.msc
new file mode 100644
index 0000000..0a44a92
--- /dev/null
+++ b/common/chapters/nitb_mncc_mo_tch.msc
@@ -0,0 +1,92 @@
+# Mobile Originated call handled via OsmoNITB with RTP proxy or E1 BTS # and
external MNCC Handler
+msc {
+ hscale="4";
+ ms [label="MS"], bts [label="BTS"], nitb [label="OsmoNITB"], emh
[label="External MNCC Hdlr"];
+
+ |||;
+ ... [label="Mobile Originated call handled via OsmoNITB
with RTP proxy or E1 BTS 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"];
+ ...;
+
+ 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 BTS to connect its RTP stream to the given IP+PORT
+ --- [label="Exact time of MNCC_FRAME_RECV is up to Ext MNCC
Hdlr"];
+ nitb <- emh [label="MNCC_FRAME_RECV[.req]"];
+ ms -> nitb [label="TCH Voice Frame (TRAU or RTP)"];
+ nitb ->emh
[label="{GSM_{TCHF,TCHH}_FRAME,GSM_TCHF_FRAME_EFR,GSM_TCH_FRAME_AMR}"];
+ ms -> nitb [label="TCH Voice Frame (TRAU or RTP)"];
+ nitb ->emh
[label="{GSM_{TCHF,TCHH}_FRAME,GSM_TCHF_FRAME_EFR,GSM_TCH_FRAME_AMR}"];
+ ... [label="Unidirectional voice frames continue"];
+
+ --- [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="TCH Voice Frame (TRAU or RTP)"];
+ nitb ->emh
[label="{GSM_{TCHF,TCHH}_FRAME,GSM_TCHF_FRAME_EFR,GSM_TCH_FRAME_AMR}"];
+ ...;
+ nitb <- emh
[label="{GSM_{TCHF,TCHH}_FRAME,GSM_TCHF_FRAME_EFR,GSM_TCH_FRAME_AMR}"];
+ ms <- nitb [label="TCH Voice Frame (TRAU or RTP)"];
+ ... [label="Bi-directional voice frames continue"];
+
+ 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: newchange
Gerrit-Change-Id: Ida10fc7ccb345b8cd084c4ecc5f4f7d4ce6c98a0
Gerrit-PatchSet: 1
Gerrit-Project: osmo-gsm-manuals
Gerrit-Branch: master
Gerrit-Owner: Harald Welte <[email protected]>
