cellular-infrastructure
/
osmo-msc
mirror of https://gerrit.osmocom.org/osmo-msc
9
0
Fork 0
Code Issues Releases Wiki Activity
Osmocom Mobile Switching Centre
6,973 Commits 88 Branches 106 Tags 41 MiB
C 96.9%
Python 1.2%
Makefile 1%
M4 0.5%
Shell 0.4%
Go to file
Vadim Yanitskiy dd466cfa59 fix _gsm48_cc_trans_free(): send MNCC REL.ind on Clear Request 
Calling gsm48_cc_tx_release() before mncc_release_ind() has a side
effect: the former may change CC state to GSM_CSTATE_RELEASE_REQ.
This makes the later send MNCC_REL_CNF instead of MNCC_REL_IND, so
if one of the call leg disconnects due to RF failure, the other one
will not be terminated correctly.

Makes both TC_{mo,mt}_call_clear_request TTCN-3 test cases pass.

Change-Id: I3ad4a99757878de3796027325627c87d9a4e93f1
Related: Id16969fe0de04445d1320a96d35cf1d48cc8cf09
Related: SYS#5340
 		2021-02-09 18:34:40 +01:00
contrib contrib/jenkins: don't build osmo-gsm-manuals 2021-01-13 13:17:28 +01:00
debian debian/control: Recommend installation of osmo-mgw 2020-11-07 17:42:53 +01:00
doc Support setting rt-prio and cpu-affinity mask through VTY 2020-08-20 08:44:20 +00:00
include Convert paging response timer into an osmocom own X4 timer 2020-09-26 21:45:09 +02:00
m4 move openbsc/* to repos root 2017-07-12 23:17:10 +00:00
src fix _gsm48_cc_trans_free(): send MNCC REL.ind on Clear Request 2021-02-09 18:34:40 +01:00
tests fix _gsm48_cc_trans_free(): send MNCC REL.ind on Clear Request 2021-02-09 18:34:40 +01:00
.gitignore .gitignore: Ignore new autofoo tmp files 2021-02-04 12:51:41 +01:00
.gitreview update .gitreview to new repo url 2017-08-08 17:26:28 +02:00
.mailmap add .mailmap file for mapping git author name/mail in shortlog 2016-08-08 17:40:28 +00:00
AUTHORS move openbsc/* to repos root 2017-07-12 23:17:10 +00:00
COPYING move openbsc/* to repos root 2017-07-12 23:17:10 +00:00
Makefile.am manuals: generate vty reference xml at build time 2020-07-12 12:30:28 +00:00
README README update. Explain more what it is than just the history 2021-01-06 13:13:46 +01:00
README.vty-tests Remove obsolete ./configure option 2017-11-29 14:24:54 +00:00
TODO-RELEASE submit_to_sms(): fix the use of deprecated gsm_septets2octets() 2021-02-05 20:15:08 +01:00
configure.ac configure.ac: set -std=gnu11 2021-01-28 09:28:26 +00:00
git-version-gen git-version-gen: Don't check for .git directory 2018-07-24 18:05:46 +02:00
osmoappdesc.py osmoappdesc.py, tests: switch to python 3 2019-12-12 09:29:19 +00:00

README 

About OsmoMSC
=============

OsmoMSC is an implementation of the 3GPP MSC (Mobile Switching Centre)
network element.  It implements the following core functionality within
the 2G (GSM) and 3G (UMTS) networks:

* mobility management
* call control (either via built-in MNCC handler or external osmo-sip-connector)
* USSD (exposed via GSUP)
* SMS (either via built-in SMSC or external via GSUP)

Historically, OsmoMSC originated from the OpenBSC project, which started
as a minimalistic all-in-one implementation of the GSM Network. In 2017,
OpenBSC had reached maturity and diversity (including M3UA SIGTRAN and
3G support in the form of IuCS and IuPS interfaces) that naturally lead
to a separation of the all-in-one approach to fully independent separate
programs as in typical GSM networks.

OsmoMSC was one of the parts split off from the old openbsc.git. Before,
it was the libmsc part of the old OsmoNITB. Since a true A interface and
IuCS for 3G support is available, OsmoMSC exists only as a separate
standalone entity.

OsmoMSC exposes
- GSUP towards OsmoHLR (or a MAP proxy);
- A over IP towards a BSC (e.g. OsmoBSC);
- IuCS towards an RNC or HNB-GW (e.g. OsmoHNBGW) for 3G voice;
- MNCC (Mobile Network Call Control derived from GSM TS 04.07);
- SMPP 3.4 (Short Message Peer-to-Peer);
- The Osmocom typical telnet VTY and CTRL interfaces.

Find OsmoMSC issue tracker and wiki online at
https://osmocom.org/projects/osmomsc
https://osmocom.org/projects/osmomsc/wiki