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
7,044 Commits 88 Branches 106 Tags 41 MiB
C 96.9%
Python 1.2%
Makefile 1%
M4 0.5%
Shell 0.4%
Go to file
Harald Welte 173bdf303b vlr: Split vlr_subscr_rx_imsi_detach() 
The function vlr_subscr_rx_imsi_detach() implies that an explicit IMSI
DETACH was received.  However, that same function was called in other
situations such as timer expiration or GSUP CANCEL.

Let's clean this up by splitting the function into two parts.

No logical change is introduced to the VLR in this patch.

Change-Id: Iffc02f3062ad591ca372a3c6d866066cf63a8830
 		2022-05-15 15:47:00 +02:00
contrib switch sqlite3 to single-threaded mode 2022-05-15 13:04:56 +02:00
debian switch sqlite3 to single-threaded mode 2022-05-15 13:04:56 +02:00
doc Do not mention deprecated -l / --database options 2021-11-12 20:28:08 +03:00
include treewide: remove FSF address 2021-12-14 12:18:16 +01:00
m4 Drop unneeded ax_check_compile_flag.m4 2022-01-11 18:11:41 +01:00
src vlr: Split vlr_subscr_rx_imsi_detach() 2022-05-15 15:47:00 +02:00
tests switch sqlite3 to single-threaded mode 2022-05-15 13:04:56 +02:00
.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 Announce IuFP audio codec for UTRAN conns in CRCX towards MGW 2022-01-05 13:58:15 +01:00
configure.ac switch sqlite3 to single-threaded mode 2022-05-15 13:04:56 +02:00
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